The objective of the present invention is to restrain a tire in a turnable manner without scratching or damaging a vehicle body, the tire, or the like, of a test vehicle. Plates 6 have one end portion 6a arranged respectively in front of and behind a front tire 1a of a test vehicle 1 placed on a roller device 19 of a chassis dynamometer system 2. Groups of free rollers 8 are arcuately arranged on the one end portions 6a of the plates 6 so as to sandwich the front tire 1a. Each of the free rollers 8 is axially supported by a bracket 7 so as to be free to rotate.
TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED (Japan)
MEIDENSHA CORPORATION (Japan)
Inventor
Suzuki, Kenichi
Isoo, Jun
Samejima, Ryota
Noda, Hideki
Shoji, Kazu
Inoue, Toshiya
Abstract
dceaceaa *bb *cc *acac *eaa *bb *cc *. In a system interconnection power conversion device for performing voltage control type virtual synchronous generator control, during an overcurrent suppression operation, the synchronization force of a virtual synchronous generator is maintained and step-out is suppressed.
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02J 3/24 - Arrangements for preventing or reducing oscillations of power in networks
An arc shield with which a tubular body of a vacuum container is provided includes a tubular arc-shield body portion interposed between a fixed-side insulating portion and a movable-side insulating portion; a tubular arc shield fixed-side extension portion extending from the arc-shield body portion on the axially fixed side along the inner peripheral side of the fixed-side insulating portion; and a tubular arc shield movable-side extension portion extending from the arc-shield body portion on the axially movable side along the inner peripheral side of the movable-side insulating portion. Further, at least one of the arc shield fixed-side extension portion and the arc shield movable-side extension portion is shaped such that the portion becomes smaller in diameter in a stepped manner in the direction of extension thereof.
A housing of a rotating electrical machine accommodates a stator and a rotor, and forms a first space communicating with a gap on a one end-side of the stator and a second space communicating with the gap on another end-side of the stator. The stator has an intermediate duct communicating with the gap. The housing has a one end-side intake port; a one end-side exhaust port; an another end-side intake port; an another end-side exhaust port; and an air intake port. The rotating electrical machine includes a one end-side throttle mechanism to suppress flow of air from the one end-side intake port to the first space more than a flow on the one end-side exhaust port side; and an another end-side throttle mechanism to suppress flow of air from the another end-side intake port to the second space more than a flow on the another end-side exhaust port side.
This vehicle speed control device 2, which controls vehicle speed by driving a drive robot 3 that operates an accelerator pedal and a brake pedal of a vehicle 6, comprises: a driving force command generation unit 20 that generates a driving force command FcmD on the basis of the actual vehicle speed V of the vehicle and a vehicle speed command Vcmd; an accelerator control unit 22 that generates an opening degree command OAC for the accelerator pedal on the basis of the driving force command Fcmd; a brake control unit 24 that generates an opening degree command θBK for the brake pedal on the basis of the driving force command Fcmd; and a step change control unit 26 that selects, on the basis of the driving force command Fcmd, whether to perform an acceleration control mode in which the opening degree command θAC is input to the drive robot 3, or a brake control mode in which the opening degree command θBK is input to the drive robot 3.
B60K 31/02 - Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism
B60K 26/02 - Arrangement or mounting of propulsion-unit control devices in vehicles of initiating means or elements
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
6.
ELECTRON BEAM EMISSION STRUCTURE AND FIELD EMISSION DEVICE
In a cold cathode (1) having a columnar electrode substrate (11) an axial one end of which is disposed in a posture facing an anode (2), the dimension in the radial direction of an anode-side facing surface (12) is 0.1 mm to 1 mm, and an electron emission unit (4) having a carbon nanostructure is formed on the anode-side facing surface (12). The surface of the carbon nanostructure is formed such that a granular part (40) having a shape raised from the surface is distributed in an island shape with respect to the surface, and has an island-like structure. The granular part (40) is formed such that the dimension in the raised direction is 10 μm or more, and the dimension in the radial direction of the maximum diameter part of the granular part is 10 μm or more.
An electric field emission device includes a vacuum vessel configured to include a vacuum chamber; an emitter positioned on one side in an axial direction of the chamber and including an electron generation portion facing another side in the axial direction; a target positioned on the other side of the chamber and facing the emitter; a guard electrode that is a cylindrical body, is fixed to the vacuum vessel, and has an opening portion; a support to move the emitter in the axial direction on an inner side of the guard electrode; and an electric field shield body formed of a conductor connected to the guard electrode. The electric field shield body partially overlaps the opening portion on a projection plane in the axial direction, and is formed in a shape partitioning the opening portion into a plurality of areas.
This field emission device 1 includes: an insulator 4 that is joined to a cathode 2 and an anode 3 to form a vacuum container 10; and an intermediate electrode 5 that is joined to the insulator 4 between the cathode 2 and the anode 3 in the vacuum container 10, and in which is formed a hole 51 through which an electron beam emitted from the cathode 2 to the anode 3 passes. The intermediate electrode 5 comprises a conductor 52 that is led out from the insulator 4 in the axial direction of the vacuum container 10, grounded via a direct current power supply 7, and connected to the anode 3.
Provided is a refrigerant abnormality determination device (1) of a power conversion device that cools a switching element with a refrigerant and includes a temperature protection thermistor (6), wherein a pre-filter thermistor estimation temperature calculation unit (2) calculates a pre-filter thermistor estimation temperature on the basis of a thermistor temperature table (21) having a current command value or a current detection value of the power conversion device as a parameter. The pre-filter thermistor estimation temperature is input to the filter (3). An addition unit (5) calculates a thermistor estimation temperature by adding a refrigerant temperature value from the refrigerant temperature sensor (4) to the value output from the filter (3). An abnormality determination unit (8) determines that the refrigerant is abnormal when a determination time is equal to or smaller than a continuous time during which the difference between the inclination of a thermistor detection temperature from the thermistor (6) and the inclination of the thermistor estimation temperature from the addition unit (5) is equal to or greater than a threshold value.
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
The present invention provides a linear metal fitting abnormality detection device and a linear metal fitting abnormality detection method that make it possible to provide a data set for improving detection accuracy of abnormality in an overhead wire fitting. The present invention is provided with: line sensor cameras 10L, 10R which are each provided with a fisheye lens and which are disposed on a vehicle roof; a trimming unit 141 for trimming portions outside imaging target ranges from an image 50L captured by a line sensor camera 10L and from an image 50R captured by a line sensor camera 10R; and an image left-right inversion processing unit 142 for performing left-right inversion on one of the trimmed image 50L and the trimmed image 50R so that the directions of the image-captured overhead wire fittings coincide with respect to the center positions of the line sensor cameras 10L, 10R. Among the trimmed images, an image that has not undergone the left-right inversion and an inverted image that has undergone the left-right inversion are provided as processed images for detecting abnormalities in the overhead wire fitting.
Provided is an overhead wire fitting abnormality detection device and an overhead wire fitting abnormality detection method capable of improving accuracy in detecting abnormalities in an overhead wire fitting at low cost even when a component to be detected is small. The overhead wire fitting abnormality detection device comprises a learning processing unit 17 that performs learning using image data generated by imaging an overhead wire fitting, and a data processing unit 15 that performs abnormality determination using the image data. The learning processing unit 17 is provided with a facility learning unit 19 that learns detection for a facility, and a component learning unit 21 that learns detection for components of the facility. In the data processing unit 15, the facility is detected according to a facility detection model learned by the facility learning unit 19, the components are detected according to a component detection model learned by the component learning unit 21 from the detected facility, and abnormalities in the facility and/or the components are determined according to an abnormality detection model trained in advance.
The outer peripheral side of a columnar electrode base (11) of a cold cathode (1) oriented to face an anode (2) is surrounded by a focusing electrode (3) having a cylindrical electrode base (31; cylindrical part (30)) arranged coaxially with the axis of the columnar electrode base (11). The cylindrical electrode base (31) has: a cylindrical part (30) that is arranged coaxially with the cold cathode axis and surrounds the outer peripheral side of the columnar electrode base (11); an annular base diameter reduction part (33) that protrudes from an end (32) of the cylindrical part (30) on the anode (2) side to the cold cathode axis side and overlaps a peripheral edge part (41) of an electron emission part (4) in the extension direction of the cold cathode axis; and an electron beam passing hole (34) that penetrates in the extension direction on the inner peripheral side of the base diameter reduction part (33).
In a motor cooling system 1, a determination unit 33 is configured to perform periodic sampling of a driving current Ip or a rotation speed Np of an oil pump 23, and detect a decrease in cooling oil of a motor 2 when it is determined that a standard deviation of the driving current Ip or the rotation speed Np with respect to a plurality of sampling points is larger than a preset threshold value. The threshold value is set on the bases of a measurement value of the driving current Ip or the rotation speed Np of the oil pump 23 which is obtained by an operation test of the motor 2 in a state in which the cooling oil has decreased.
H02K 9/24 - Protection against failure of cooling arrangements, e.g. due to loss of cooling medium or due to interruption of the circulation of cooling medium
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
H02K 11/33 - Drive circuits, e.g. power electronics
14.
WATER TREATMENT APPARATUS AND WATER TREATMENT METHOD
A water treatment apparatus 1 comprises a storage tank 2 for water to be filtered, an ozone water mixing tank 6, and a pulse plasma discharge tank 7. The storage tank 2 for water to be filtered stores water to be filtered which contains a substance to be treated and which is provided for filtration. The ozone water mixing tank 6 mixes, with ozone water, concentrated discharge liquid of the substance to be treated, in which the substance to be treated that has been separated by the filtration from the water to be filtered is concentrated. The pulse plasma discharge tank 7 provides pulse plasma to a mixed liquid of the ozone water and the concentrated discharge liquid of the substance to be treated.
The disclosed vehicle drive device (10) includes: left and right motors (1,2) that drive left and right wheels of the vehicle; a gearbox (3) that is sandwiched between the left and right motors (1,2); and an inverter (4) that is arranged in a mounting space (S) over the left and right motors (1,2) and the gearbox (3). The gearbox (3) forms, in conjunction with respective motor housings (11,12) of the left and right motors (1,2), a depressed portion (8) depressed downward. The inverter (4) includes a cover (15) that is in a flat-plate shape, is attached to a tray unit (16), and covers the capacitor (5) and a semiconductor module (6) from above the capacitor (5) and the semiconductor module (6). The capacitor (5) is attached to a lower surface of the cover (15) and is arranged in the depressed portion (8). The semiconductor module (6) is attached to the lower surface of the cover (15) and is displaced from each of the capacitor (5) and the rotating shafts (C) of the motors (1,2) when seen from above.
B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
B60K 1/00 - Arrangement or mounting of electrical propulsion units
B60K 1/02 - Arrangement or mounting of electrical propulsion units comprising more than one electric motor
The disclosed vehicle drive device (10) includes: motor housings (11,12), a gearbox housing (13), an inverter case (14), and a PN line (9). The motor housings (11,12) form respective exteriors of a left motor (1) and a right motor (2) that drive left and right wheels of a vehicle with electric power of a battery. The gearbox housing (13) incorporates therein a gearbox (3) that amplifies torque of the left and right motors and that transmits the amplified torque to the left and right wheels, is sandwiched between the left and right motor housings (11,12), and is offset in a front-rear direction from the left and right motor housings (11,12). The inverter case (14) incorporates therein a pair of semiconductor modules (6,7) and is arranged above the left and right motor housings (11,12). The PN line (9) connects the battery to the semiconductor modules (6,7) from a lower surface side of the inverter case (14) so as to pass through a first space (41).
B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
B60K 1/02 - Arrangement or mounting of electrical propulsion units comprising more than one electric motor
B60K 1/04 - Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
B60L 50/51 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
A vehicle drive device (10) includes: a motor unit (1) that includes a motor for driving mounted on a vehicle and a gear mechanism that transmits torque of the motor to each of left and right wheels of the vehicle; and an inverter (4) that is arranged over the motor unit (1) and that includes a capacitor (5) smoothing electricity and a semiconductor module (6) including a plurality of switching elements, wherein the inverter (4) includes a tray unit (16) that accommodates the capacitor (5) and the semiconductor module (6), and a cover (15) that is in a flat-plate shape, is attached to the tray unit (16), and covers the capacitor (5) and the semiconductor module (6) from above the capacitor (5) and the semiconductor module (6), the cover(15) is integrated with a cooling unit (20) through which a coolant for cooling the inverter (4) flows, and the capacitor (5) and the semiconductor module (6) are attached to a lower surface (17) of the cover (15).
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
B60K 1/02 - Arrangement or mounting of electrical propulsion units comprising more than one electric motor
B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
The present invention makes it possible to separate a faulty detection cell from an SST-type power conversion system while suppressing overvoltage and overcurrent in the system. A system in which a plurality of power converter units (cells) provided with an AC/DC converter, an insulated DC/DC primary-side converter, and an insulated DC/DC secondary-side converter are provided, AC-side terminals of the cells are connected in series, and DC-side terminals of the cells are connected in parallel, wherein: a switch SWin for short-circuiting the AC-side terminals and a switch SWout for disrupting the DC-side parallel connection are provided; a short-circuit detection location of each converter in the cells is determined (step S11); after the gate of the short-circuit-detection-side converter is blocked (steps S12a, S12b), the gate of the non-short-circuit-detection-side converter is blocked (steps S13a, S13b); and then the AC-side switch SWin is turned on (step S14), and the DC-side switch SWout is turned off (step S15).
H02M 7/12 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 3/28 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
19.
CONTROL METHOD AND CONTROL DEVICE FOR FILTRATION MEMBRANE SYSTEM, AND FILTRATION MEMBRANE SYSTEM
This control method is for a filtration membrane system which comprises: a coagulant injection unit for injecting a coagulant into raw water; and a filtration membrane for obtaining filtered water by performing a filtration process on coagulation-treated water which is raw water containing an aggregate formed due to injection of the coagulant. The control method includes, as pretreatment prior to the filtration process with the filtration membrane, a control step for controlling the rate of injection of at least one of the coagulant and a pH adjustment agent so that the zeta potential of the aggregate falls within a target range corresponding to a material of the filtration membrane.
The purpose of the present invention is to improve a cooling structure for cooling a stator coil. According to the present invention, a stator core has a plurality of divided stator cores divided in an axial direction. The plurality of divided stator cores have: a first stator core having a first slot which constitutes a slot and a first flow path which is a flow path for a refrigerant, opens to the outside in the radial direction, does not open to the inside in the radial direction, and is not in communication with the first slot; a second stator core having a second slot which is in communication with the first slot in the axial direction and constitutes the slot and a second flow path which does not open to the outside in the radial direction, is in communication with the first flow path in the axial direction, and is in communication with the second slot; and a third stator core having a third slot which is in communication with the first slot or the second slot in the axial direction and constitutes the slot.
An oxide film forming method for forming an oxide film on a film formation surface of a target workpiece is provided. The method includes utilizing an oxide film forming device which includes a chamber in which a target workpiece is removably placed; a gas supply unit arranged at a position opposed to the film formation surface of the target workpiece placed in the chamber; and a gas discharge unit arranged to discharge a gas inside the chamber by suction. The gas supply unit has nozzles for supplying of raw material gas, ozone gas and unsaturated hydrocarbon gas with supply ports thereof opposed to the film formation surface of the target workpiece away from the film formation surface. Raw material gas, ozone gas and unsaturated hydrocarbon gas supplied from the respective supply nozzles are mixed in a space between the supply ports and the film formation surface.
C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
A rotary electric machine includes: a rotor; a shaft that penetrates the rotor along a rotation axis and is pivotally supported by a bearing; a stator accommodating the rotor inside; a rotor cover attached to an axial end surface of the rotor; and a casing having a flow passage for supplying oil to the bearing. The rotor cover has an oil receiving portion that forms a concentric clearance with respect to the shaft and receives the oil from the bearing in the clearance, and an oil distribution passage that communicates with the axial end surface of the rotor from the oil receiving portion. The rotary electric machine supplies the oil guided to the clearance to the oil distribution passage by centrifugal force to cool the rotor.
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
A rotary electric machine includes: a rotor; a shaft that penetrates the rotor along a rotation axis and is pivotally supported by a bearing; a stator that has a cylindrical shape, accommodates the rotor inside, and has a coil wound around an inner peripheral side; a rotor cover attached to an axial end surface of the rotor; and a casing having a flow passage for supplying oil to the bearing. The rotor cover has an oil receiving portion that forms a concentric clearance with respect to the shaft and receives the oil from the bearing in the clearance. The oil receiving portion has an injection port for injecting the oil guided to the clearance toward an inner periphery of the coil by centrifugal force.
In the present invention, a jacking point 13 is formed, by casting, on a lower section of a housing 16 of an electric motor 11 mounted in a vehicle 10. A base section 13a of this jacking point 13 comprises: a jacking point surface 20 that is initially raised by a jack device; and side contact surfaces 22a-22d that are formed on the periphery of the jacking surface 20.
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
The purpose of the present invention is to improve the cooling structure of a rotating machine. This rotating machine has a rotor and a stator that faces the outside of the rotor in the radial direction across a gap. The stator has a stator coil and a stator core having a slot that houses the stator coil. The stator has a thin film member that covers at least a part of the inner circumferential surface of the stator core. The thin film member has a window part in which the stator core is exposed radially inward at the center in the axial direction and a cylindrical part covering the inner circumferential surface of the stator core on both sides of the window part in the axial direction. The thin film member has a radiation part extending radially outward from the cylindrical part along a side wall of the slot. The thin film member has a first flow path extending from the window part to the outside of the cylindrical part in the radial direction and extending to both ends in the axial direction along the radiation part.
The objective of the present invention is to provide a technology capable of inexpensively and stably performing highly accurate abnormality detection. A device according to the present invention comprises a learning processing unit 132 which performs learning using a plurality of items of one-hot expression index image data in a normal state, generated by converting each pixel of image data generated by imaging an overhead wire fitting, which is a detection target, in a normal state, and a data processing unit 131 which generates one-hot expression index image data by converting each pixel of image data generated by imaging the overhead wire fitting that is the detection target, and performs abnormality determination using the one-hot expression index image data, wherein the data processing unit 131 performs the abnormality determination on the basis of a union set of an input image and an output image generated by a learning model that has been trained by the learning processing unit 132 from the input image, and a difference image between the input image and the output image.
This reverse force mechanism is combined with a device having a normal force and applies a reverse force to the same point of action, thereby adjusting the total operating force. A cam curved surface 14 is formed on a driving node 1, which, upon receiving a normal-force operating force F11 applied thereto from a device having a normal force, becomes movable in an axial direction in which the normal-force operating force F11 has been applied. A driven node 2 has a roller 13 that comes into contact with the cam curved surface 14 to apply contact pressure to the cam curved surface 14. The cam curved surface 14 is formed such that a gradient angle θ14, which is an angle formed by the axial direction of the normal-force operating force F11 and a tangent line of the cam curved surface 14 and the roller 13, changes depending on the position of the driving node 1. In addition, the cam curved surface 14 is formed such that a total operating force resulting from combining a reverse force, which is generated by the contact pressure and which changes according to the gradient angle θ14, and the normal-force operating force F11 becomes substantially constant. The reverse force mechanism realizes simplicity and downsizing, and improves the performance of a device having a normal force.
F16F 3/04 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
This ozone water supply device (1) is provided with: an ozone water generation unit (2) which generates ozone water by receiving, in a gas-liquid mixer (21), a solvent and an ozone gas that has an ozone concentration of 50% by volume or more and an ozone partial pressure of 30 kPa (abs) or less; an ozone water supply unit (3) which discharges and supplies the ozone water to a supply-receiving object (S); and a miscible liquid supply unit (4) which discharges and supplies a temperature-raisable liquid to the supply-receiving object (S) by receiving a miscible liquid that is miscible with the ozone water. By simultaneously or alternately discharging the ozone water and the miscible liquid, the ozone water and the miscible liquid are mixed with each other at a discharge-receiving side unit (S1).
This electron beam emission structure 1 comprises an electron source 2 and a guard electrode 3. The electron source 2 emits an electron beam B at a target 4 of a field emission device. The guard electrode 3 is disposed on the periphery of the electron source 2. In the electron source 2, an end surface facing the target 4 constitutes an electron emission surface 20. The central portion of the electron emission surface 20 forms a curved concave surface 21, whereas the peripheral portion thereof forms a curved convex surface 22.
The purpose is to improve the cooling structure of a stator. The stator comprises: a stator coil having coil ends at both axial ends and extending in the axial direction; a first stator core having a first slot that accommodates one axial side of the stator coil; a second stator core arranged on the other axial side of the first stator core and spaced apart from the first stator core and having a second slot that accommodates the other axial side of the stator coil; a first frame member interposed between the first stator core and the stator coil that is accommodated in the first slot; and a second frame member interposed between the second stator core and the stator coil that is accommodated in the second slot.
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
H02K 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
This rotating electric machine comprises a rotor, and a stator that has a plurality of slots in which a stator coil for generating magnetic force for the rotor is disposed, and that is disposed on an outer periphery of the rotor. The stator coil has a plurality of sets of coils disposed in adjacent slots in a circumferential direction, and connected to each other in parallel. Each of the plurality of sets of coils includes a segment in which conductors are lap-wound with a predetermined slot pitch. The segments are disposed spaced apart from each other in the circumferential direction with different slot pitches between the plurality of sets of coils. In the slots, the conductors of any coils are disposed in the form of a double-layer winding.
This cleaning device (1) for a substrate (S) is provided with: an ozone water generation unit (2) that receives, in a gas-liquid mixer (21), a solvent and an ozone gas having an ozone concentration of 50% by volume or more and an ozone partial pressure of 30 kPa (abs) or less; an ozone water supply unit (3) that discharges and supplies the ozone water to the substrate (S); and an miscible liquid supply unit (4) that receives a miscible liquid having miscibility with the ozone water and discharges and supplies liquid of which temperature can be raised to the substrate (S). The ozone water and the miscible liquid are simultaneously or alternately discharged, thereby mixing the same at the discharged side part (S1).
This warming-up method for a chassis dynamometer system includes: a step for executing a warming-up operation for rotating a dynamometer over a predetermined warming-up period such that the rotational speed of a roller or a dynamometer is maintained at a predetermined warming-up set speed; a step for acquiring a force parameter value correlated with a force acting on the roller or the dynamometer in a stability determination period defined within the warming-up period; a step for calculating a segment average value of the force parameter value for each of a plurality of average calculation segments defined within the stability determination period; a step for calculating a difference value between the segment average values in two adjacent average calculation segments; a step for calculating a peak-to-peak value of the difference values within the stability determination period; and a step for determining a stability state of a warming-up target including at least the dynamometer on the basis of the peak-to-peak value.
This housing structure for a rotary electrical machine comprises a housing body in the form of a bottomed cylinder in which a cylindrical body portion and a bottom surface portion that closes the body portion on one side in the axial direction are integrally formed. A plurality of belt-shaped channels that allow cooling water to flow in the circumferential direction and are divided in the circumferential direction by axially extending partition walls are arranged in the interior of the body portion so as to form a ring shape. Each belt-shaped channel has an end portion on one side in the axial direction open and in communication with the outside of the housing body. The openings of the belt-shaped channels are covered and sealed by arc-shaped lid bodies from the outside of the bottom surface portion.
When a vehicle (3) is being loaded onto a chassis dynamometer (1), a front electric actuator (9aa) located on a vehicle front side of a vehicle front side centering device (2a) that performs centering of a front wheel (4a) is driven, and a support roller (15aa) of the front electric actuator (9aa) is raised to an assistance reference position. Since the chassis dynamometer (1) is capable of driving only one of front electric actuators (9a) and rear electric actuators (9b), support rollers (15a) and support rollers (15b) can be raised and lowered independently so as not to impede the loading and unloading of the vehicle (3), thereby enabling the loading and unloading of the vehicle (3) to be carried out smoothly.
In an inverter device 1, a pair of bus bars P and N are disposed along each other between a smoothing capacitor 2 and a power semiconductor module 3 and are connected to the smoothing capacitor 2 and the power semiconductor module 3. A heat sink 5 is disposed between the bus bars P and N along the bus bars P and N. Insulating members 6 are disposed between the bus bar P and the heat sink 5 and between the bus bar N and the heat sink 5. A part of the heat sink 5 is connected to a case 4 on which the power semiconductor module 3 is mounted.
A shaft configured to suppress damage without having an increased diameter is provided. The shaft includes a supported portion supported by a bearing and an adjacent large-diameter portion larger in diameter than the supported portion and disposed closer to a center in an axial direction than the supported portion. The shaft is configured to rotate integrally with a rotor while holding the rotor. A sectional shape of a boundary portion between the supported portion and the large-diameter portion in a longitudinal section of the shaft is an arc shape that is, on an outer side in the axial direction with respect to a virtual rising point, recessed inward from an outer edge in the radial direction of the supported portion and raised outward in the radial direction from the outer edge, as the arc shape extends from the outer to an inner side in the axial direction.
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
r for generating a rear-wheel torque current command on the basis of the inputs Ffil_r and Fd. The load balance computation unit 62 causes the inputs Ffil_f and Ffil_r to change independently of one another, raises the input Ffil_f a rear-wheel drive force Fvr increases, and raises the input Ffil_r as a rear-wheel drive force Fvf increases.
The purpose of the present invention is to improve the degree of freedom of the bus ring and frame of a rotating electric machine. This stator structure comprises: a stator having a stator core and a stator coil wound around the stator core; a bus ring having a bus bar to which the stator coil is connected; a frame housing the stator core on the radially inner side and having a refrigerant liquid flow path that opens at one side end in the axial direction and extends toward the other side in the axial direction; a lid member disposed on one side of the frame in the axial direction and on the other side of the bus ring in the axial direction and sealing the opening of the flow path; and a holding structure holding the bus ring on the lid member.
The purpose of the present invention is to improve how freely a refrigerant liquid passage can be located in a frame of a rotary electric machine. A stator structure according to the present invention comprises: a stator that has a stator core and a stator coil that is wound on the stator core; a bus ring that has a busbar to which the stator coil is connected and has a larger outer diameter than that of the stator core; a frame that accommodates the stator core on the inside in the radial direction and has a refrigerant liquid passage that opens at one end in the axial direction and extends toward the other end in the axial direction; and a lid member that is positioned on one side of the frame in the axial direction and the other side of the bus ring in the axial direction, blocks the opening of the passage, and retains the bus ring. The lid member is fixed to the frame.
This cell multiplex inverter comprises: a plurality of cells cellu1 to cellw4 multiple-connected to the respective phases of an AC system AC in a star connection; and a gate command generation unit that generates gate commands for the switching elements of the plurality of cells. The cell multiplex inverter drives some of the plurality of cells as commercial frequency drive cells that perform one switching for one cycle of a commercial frequency or the output frequency and drives the remaining ones of the plurality of cells as high-frequency drive cells that drive at a higher frequency than the commercial frequency drive cells. In the gate command generation unit, the commercial frequency drive cells suppress the increase in the number of switching times when the slope of voltage command values is smaller than a slope threshold value and allow the increase in the number of switching times when the slope of the voltage command values is greater than the slope threshold value. In the cell multiplex inverter, the increase in the number of switching times in a steady condition is suppressed and overcurrent when a system voltage and/or the output current change abruptly is suppressed.
H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
44.
OZONE WATER GENERATION DEVICE AND GENERATION METHOD
While a solvent capable of dissolving ozone gas is being circulated through a circulation line (L2a), the temperature of the solvent is appropriately controlled, and the solvent is caused to flow into a gas-liquid mixer (21) to which the ozone gas is supplied under a freely selected supply pressure, thereby mixing and dissolving the ozone gas in the solvent. The gas-liquid mixer (21) is configured to include a solvent flow path through which the solvent flows, and an ozone gas introduction path that is provided by connection to the solvent flow path to introduce ozone gas supplied to the gas-liquid mixer (21) into the solvent flow path. The temperature of the solvent is controlled so that the vapor pressure of the solvent is lower than the supply pressure, and the ozone gas supplied to the gas-liquid mixer (21) is set to an ozone concentration of 50% by volume or more and an ozone partial pressure of 30 kPa (abs) or less.
B01F 23/23 - Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
B01F 25/53 - Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
A motor 1 includes a stator 3, a rotor 2, and a housing 52. The housing 52 includes a one-side space 52a, an other-side space 52b, a one-side communication hole 52c, and an other-side communication hole 52d. The one-side space 52a and the other-side space 52b communicate with each other via a gap G, the one-side communication hole is connected to a first airflow generator 64, and the other-side communication hole is connected to a second airflow generator 65. The motor 1 includes a forced inflow hole 52c1 connected to the first airflow generator 64 and a natural exhaust hole 52c2 through which air is naturally exhausted as the one-side communication hole, and includes a forced exhaust hole 52d1 connected to the second airflow generator 65 and a natural intake hole 52d2 through which air is naturally sucked into inside of the other-side space 52b as the other-side communication hole.
H02K 9/18 - Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
This bidirectional isolated DC-DC converter comprises: a primary-side inverter INV1; a first DC cut capacitor C1 connected to the AC side of the primary-side inverter INV1; a secondary-side inverter INV2; a second DC cut capacitor C2 connected to the AC side of the secondary-side inverter INV2; a transformer Tr having a primary winding connected to the AC side of the primary-side inverter INV1, and a secondary winding connected to the AC side of the secondary-side inverter INV2; and a control unit that controls switching devices of the primary-side inverter INV1 and the secondary-side inverter INV2. The control unit determines an operation of the primary-side inverter INV1 and an operation of the secondary-side inverter INV2 so as to reduce an increase in voltage to be applied to leakage inductances L1, L2 of the transformer Tr, in accordance with failure states of the switching devices. In the bidirectional isolated DC-DC converter, a fault-tolerant operation is achieved without an additional element, and with high efficiency.
H02M 3/28 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
UVWUVW0d0q1d1q2d2q0d0qUVWUVWW*'. In this cell multiplexing inverter in which a plurality of cells are multiplexedly connected to each phase of an AC system through star connection, even when an imbalance has occurred in AC voltages or when an imbalance AC voltage is to be intentionally outputted, providing a cell to a corresponding phase or increasing a cell DC voltage only in the corresponding phase is no longer needed, and further, a common mode current is suppressed.
H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
H02J 3/26 - Arrangements for eliminating or reducing asymmetry in polyphase networks
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
In the present invention, if the amplitude of a voltage command value of a certain phase is greater than the amplitude of a voltage command value of another phase, a corrected voltage command value generation unit superimposes, on the voltage command value, a sine wave of a phase opposite the certain phase as a zero-phase voltage, and if the amplitude of the voltage command value of the certain phase is smaller than the amplitude of the voltage command value of the other phase, the corrected voltage command value generation unit superimposes, on the voltage command value, a sine wave of the same phase as the certain phase as a zero-phase voltage. In a cell multiplex inverter in which a plurality of cells are star-connected to the phases of an alternating-current system in a multiplexed manner, the alternating-current output voltages of the cells can be equalized even if there is an imbalance in the alternating-current voltages or if unbalanced alternating voltages are to be output intentionally.
H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
H02J 3/26 - Arrangements for eliminating or reducing asymmetry in polyphase networks
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
49.
MEASUREMENT DATA SYNCHRONIZATION METHOD, TESTING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM STORING COMPUTER PROGRAM
A measurement data synchronization method for synchronizing, through use of a data analysis apparatus, time series outputted from first through fifth measuring instruments, includes a step ST1 for acquiring first through fifth reference data outputted from the first through fifth measuring instruments when a reference signal including a stationary interval and a rising interval is inputted to the measuring instruments simultaneously, steps ST3-ST5 for generating first through fifth filter processed data by applying median filter processing to the first through fifth reference data to extract the median value in a prescribed duration, a step ST6 for calculating first through fifth rising times as timing information of rising from each of the first through fifth filter processed data, and a step ST7 for synchronizing first through fifth measurement data outputted from the measuring instruments on the basis of the first through fifth rising times.
G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
G01M 99/00 - Subject matter not provided for in other groups of this subclass
G06F 16/27 - Replication, distribution or synchronisation of data between databases or within a distributed database systemDistributed database system architectures therefor
50.
COOLING STRUCTURE OF ROTARY ELECTRIC MACHINE AND ROTARY ELECTRIC MACHINE
This cooling structure of a rotary electric machine includes: a stator including, in a circumferential direction, a plurality of slots in which a coil is accommodated; a plurality of coil cooling channels that are formed on an outer circumferential side of the coil within the slots and that allow a cooling oil for cooling the coil to flow in an axial direction; a first distribution channel that is formed at an end of one side of the stator and that distributes, in the circumferential direction, the cooling oil to the coil cooling channels on the one side; and a second distribution channel that is formed on an end of another side of the stator and that distributes, in the circumferential direction, the cooling oil to the coil cooling channels on the other side. The first distribution channel is connected to each of a plurality of first coil cooling channels that allow the cooling oil to flow from the one side to the other side. The second distribution channel is connected to each of a plurality of second coil cooling channels that allow the cooling oil to flow from the other side to the one side. The first coil cooling channels and the second coil cooling channels are disposed offset in the circumferential direction of the stator.
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
In the present invention, in an inserted state, a spring shaft 12 is fixed in a position obtained by shifting a measurement which is set so that the total operating force is of a constant value other than zero, the measurement being shifted, parallel to a slider 15, from a base point on a line extending from a spindle 11 to a movable shaft 13. The operating angle between an action link 22 and the slider 15 is configured to be in the range of 25° to 85°. This reverse-force mechanism is combined with an instrument having positive spring stiffness. The configuration of the reverse-force mechanism is simplified and scaled down, serving to reduce the operating force so as to be suited to high-speed operation, and to put the total operating force at a value other than zero so as to be suited to high-precision control.
F16F 3/04 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
H01G 5/01 - Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaftProcesses of their manufacture Details
Provided is a line abnormality detection system which further accurately detects lines in a shorter time. The line abnormality detection system 10 comprises line sensor cameras 11a, 11b, a storage unit, a train line fitting detection unit, a line detection unit, and a line abnormality detection unit. The line sensor cameras 11a, 11b image lines (a suspension line 4, a trolley line 5, a hanger 6) from the vehicle roof 2 of a moving vehicle 1. The line fitting detection unit detects, from image data, a fitting (the hanger 6) accompanying the line. The line detection unit calculates a likelihood indicating the degree at which fittings can be combined in a straight line shape, and detects the lines (the suspension line 4, the trolley line 5) from the image data on the basis of the likelihood. The line abnormality detection unit detects the abnormality of the lines (the suspension line 4, the trolley line 5) from line detection information and the line images.
This vacuum capacitor comprises: a vacuum container 1a that accommodates a fixed electrode 7 and a movable electrode 8, which are capable of ensuring static capacitance; and a vacuum expansion container 52 that communicates directly with the vacuum container 1a. The vacuum container 1a is provided with a movable support part 91 that supports the movable electrode 8, a movable conductor 6 that supports the movable support part 91 to enable reciprocation in the axial direction of the vacuum container 1a, a fixed conductor 51 that supports the fixed electrode 7, and a main bellows 50 that is interposed between the movable support part 91 and the movable conductor 6. The vacuum expansion container 52 is provided with a movable part 54 that is coaxially aligned with the movable support part 91, and an adjustment bellows 53 that is interposed between the movable part 54 and the inner end-part surface of the vacuum expansion container 52. The movable support part 91 and the movable part 54 are linked by an insulated connection rod 55 that is coaxially aligned with the fixed electrode 7 and the movable electrode 8.
H01G 5/14 - Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaftProcesses of their manufacture using variation of effective area of electrode due to longitudinal movement of electrodes
H01G 5/04 - Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaftProcesses of their manufacture using variation of effective area of electrode
54.
HOUSING STRUCTURE OF ROTATING ELECTRIC MACHINE AND ROTATING ELECTRIC MACHINE
A housing structure of a rotating electric machine comprises a housing that houses the rotating electric machine inside and has a housing opening for drawing the lead wires of the rotating electric machine to the outside, and an insulating terminal box that is attached to the housing and covers the housing opening. In the terminal box, a mounting surface having an opening that communicates with the housing opening is formed on the bottom side, and the terminal box has a terminal block therein to which lead wires drawn out from the opening are connected. The housing opening is formed at an axial end of the housing on a surface obliquely inclined with respect to the axial direction of the rotating electric machine. The mounting surface of the terminal box is formed to be inclined with respect to the axial direction in accordance with the surface where the housing opening is formed. A cylindrical sleeve that protrudes toward the housing and is inserted into the housing opening is provided on the mounting surface at the edge of the opening.
In this rotating electric machine comprising a rotor and a stator, one of the rotor and the stator has: a groove portion that is formed on the circumferential surface facing the other of the rotor and the stator and extends in a direction intersecting with the circumferential direction; and a resin-made covering portion that covers the groove portion. The groove portion includes a retaining portion formed such that the groove width at a second position further away from an opening in the radial direction than a first position is wider with respect to the groove width at the first position. The retaining portion holds a resin material filled in the groove portion and retains the covering portion.
A first bus circuit breaker 5 is housed in a first bus chamber 3. A first bus actuator operates the bus circuit breaker 5. A first bus operating mechanism 7 connects the first bus actuator and the first bus circuit breaker 5, and operates the first bus circuit breaker 5 according to the operation of the first bus actuator. A second bus chamber 4 is disposed on the opposite side to the first bus actuator when viewed from the first bus chamber 3, and a second bus circuit breaker 6 is housed therein. A second bus actuator is disposed on the opposite side to the second bus chamber 4 when viewed from the first bus chamber 3, and operates the second bus circuit breaker 6. A second bus operating mechanism 8 passes through the first bus chamber 3 to connect the second bus actuator and the second bus circuit breaker 6. The second bus operating mechanism 8 operates the second bus circuit breaker 6 according to the operation of the second bus actuator. In a double bus type gas insulated switchgear, the tank is reduced in size, and the portion connecting between the tank and a closing panel is simplified.
NATIONAL AGENCY FOR AUTOMOBILE AND LAND TRANSPORT TECHNOLOGY (Japan)
Inventor
Takahashi, Toshimichi
Nakagawa, Masao
Abstract
A vehicle inspection device for implementing a test on automatic braking performance of a test vehicle including an optical laser device for obstacle detection, in an inspection room three sides of which are surrounded by side walls, the vehicle inspection device comprising: a test instrument disposed at a side of the test vehicle; and a mirror unit that covers an upper face of the test instrument and upwardly guides light emitted from the optical laser device. The mirror unit may include a combination of a first plane mirror part disposed horizontally and a second plane mirror part disposed to be inclined.
B60W 30/09 - Taking automatic action to avoid collision, e.g. braking and steering
G01L 5/28 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
An electrical device according to the present invention has a case (1), a metallic heat sink plate (4) disposed an opening portion (OP) of the case and a circuit board (5) arranged on the heat sink plate. The heat sink plate (4) is interposed between a capacitor (2) and the circuit board (5) so that the circuit board (5) is separated from the capacitor (2) by not only the resinous case (1) but also the metallic heat sink plate (4). Thus, electromagnetic space noise generated from the capacitor (2) is shielded or reduced by the metallic heat sink plate (4) whereby a malfunction of the circuit board (5) is prevented from occurring due to electromagnetic space noise generated from the capacitor (2).
A vehicle inspection device for an inspection implemented with a tire of a vehicle idling includes a tire supporter. The tire supporter includes rollers structured to allow the tire to idle; a housing supporting the rollers so as to allow the rollers to rotate; a stopper contained in the housing and structured to move up and down and butt into the tire disposed on the rollers; and a link mechanism structured to elevate the stopper. The vehicle inspection device is structured to be disposed on a plane that allows the vehicle to run thereon.
A first adapter (11) comprising an adapter flange (15) and a shaft member (17) is attached to a hub (4) in place of a wheel. The shaft member (17) has an inner race fitting shaft part (19) that forms a cylindrical surface. A second adapter (12) holds a ball bearing (25), and the inner race fitting shaft part (19) is supported by the inner periphery of an inner race (25a). A coupling (13) is attached to the distal end of the inner race fitting shaft part (19), and the coupling (13) and a rotary shaft of a dynamometer are connected via a constant-velocity joint. The second adapter (12) has a pair of spindles along a diametrical line, and is supported on a support surface of a pedestal via a leg part.
A first claw member (12) allows a seat (8) to move in a direction (forward direction) toward a dynamometer (3) when an end of the first claw member (12) is inside a croze (7), and restricts the seat (8) from moving in a direction (rearward direction) away from the dynamometer (3). A second claw member (13) restricts the seat (8) from moving in the direction (forward direction) toward the dynamometer (3) when an end of the second claw member (13) is inside the croze (7), and allows the seat (8) to move in the direction (rearward direction) away from the dynamometer (3).
In the present invention, each of the magnetic poles of an embedded magnet-type rotor comprises an iron core on which magnets are arranged, and has a first flux barrier and a second flux barrier respectively provided to the end parts of the magnets with the magnetic pole center therebetween. The first flux barrier includes a first elongated portion that is contiguous with a first base portion and that extends in the circumferential direction from the first base portion toward the magnetic pole center. The second flux barrier includes a second elongated portion that is positioned so as to be spaced from a second base portion with the iron core therebetween and extends in the circumferential direction from the second base portion side toward the magnetic pole center. A magnetic flux bypass portion that connects the outer periphery and the inner periphery of the rotor in the radial direction by means of the iron core is formed between the second base portion and the second elongated portion.
Between positive and negative electrode ends of battery 50, fuse 51, main contactor 52 and electrolytic capacitor C21 are connected in series. Between positive and negative electrode ends of electrolytic capacitor C21, inverter 54 in which upper phase side EFT (54U, 54V, 54W) and lower phase side FET (54X, 54Y, 54Z) are bridge-connected is connected. Resistor R1 for precharging electrolytic capacitor C21 is connected to main contactor 52 in parallel. The resistance value of resistor R1 is set so that in a precharging period until a key switch is turned on after battery 50 is connected, when the upper phase side FET is OFF-controlled and the lower phase side EFT is ON-controlled, the charge voltage value of electrolytic capacitor C21 is set to be able to limit a gate-source voltage of the upper phase side FET to a voltage at which the upper phase side FET is not turned on.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
64.
COOLING LIQUID FLOW PATH SEALING STRUCTURE OF ROTATING ELECTRIC MACHINE
Provided is a cooling liquid flow path sealing structure of a rotating electric machine, which is capable of reducing the size and weight of the rotating electric machine while ensuring the cooling liquid flow path sealing properties of the rotating electric machine and maintaining the performance of the rotating electric machine and also which is capable of improving the cooling performance. The cooling liquid flow path sealing structure seals a ring recess 20 that is the opening portion of a cooling liquid flow path 10 which is provided within the wall thickness portion 2a of the cylindrical frame 2 of a motor 1, which opens at least on one side of the frame 2 in the axial direction, and through which a cooling liquid for cooling the motor 1 flows. The cooling liquid flow path sealing structure comprises a bracket 3 that is joined to at least one of both end surfaces of the frame 2 in the axial direction and covers the ring recess 20 of the cooling liquid flow path 10, wherein the bracket 3 has an inlay protrusion 21 that projects to the frame 2 side and fits into the ring recess 20 of the cooling liquid flow path 10.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
65.
COOLING LIQUID FLOW CHANNEL STRUCTURE IN ROTATING MACHINE
Provided is a cooling liquid flow channel structure in a rotating machine, the flow cannel structure being able to reduce pressure loss of cooling liquid flowing through a flow channel to thereby improve cooling efficiency while securing smooth flow of the cooling liquid. A cooling liquid flow channel structure, which is for cooling a motor 1 and which is provided in a cylindrical frame 2 in the motor 1, comprises: a flow channel body 11, which is provided in a wall thickness part 2a of the frame 2 so as to extend while meandering along the circumferential direction of the frame 2, and through which cooling liquid flows during cooling; and a bypass flow channel 12 which is provided so as to extend along the circumferential direction of the frame 2 at one of both ends of the frame 2 in the axial direction and to connect front-side reverse flow channel parts 15, 15 of the frame 2 in the flow channel body 11, and through which cooling water flows during cooling. The flow channel body has a plurality of straight flow channel parts 14 disposed in the circumferential direction of the frame 2 and a plurality of reverse flow channel parts 15, 16 connected to ends of the straight flow channel parts 14.
An electric inertia control device 6 of this testing system generates a torque current command signal in such a way that a dynamometer behaves as an inertial body having a prescribed set inertia Jset. The electric inertia control device 6 comprises: a target speed setting unit 60 for generating a target speed signal on the basis of a shaft torque detection signal and the set inertia; a speed controller 63 for generating a feedback input signal on the basis of a difference signal between the target speed signal and a speed detection signal; and a feed-forward controller 65 for generating a feed-forward input signal on the basis of the shaft torque detection signal. The feed-forward controller 65 generates the feed-forward input signal by combining the shaft torque detection signal, multiplied by a first feed-forward gain Kff, and an integrated value of the shaft torque detection signal, multiplied by a second feed-forward gain Kfi.
This gate driving circuit comprises modulation circuits 2, 3, an on-side rectification circuit 4, and an off-side rectification circuit 5. The modulation circuits 2, 3 make the frequencies of a first modulation circuit vTr1 and a second modulation signal vTr2 be variable according to an on command width and an off command width of a gate command. The on command width is made equal to the duration of one positive pulse of the first modulation signal vTr1, the on command width is made equal to the duration of one negative pulse of the first modulation signal vTr1, and the positive pulse and negative pulse of the first modulation signal vTr1 are alternately output when the command becomes the on command. When a pulse transformer is driven by a DC/AC modulation circuit, bias magnetism is suppressed and a limitation for the minimum on pulse width is relaxed.
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
A brazing structure for a vacuum container 1a is provided. The vacuum container 1a comprises: a fixed conductor 5 on which a fixed electrode 7 is supported; a movable conductor 6 on which a movable electrode 8 is supported; a flange pipe 4 which is bonded to the movable conductor 6 coaxially with the fixed electrode 7 and the movable electrode 8; and a ceramic pipe 21 which is provided coaxially therewith. One end of the ceramic pipe 21 is bonded to the fixed conductor 5 by brazing, with a linking flange pipe 31 therebetween, and the other end thereof is bonded to the flange pipe 4 by brazing, with a linking flange pipe 31, not shown, therebetween. The linking flange pipe 31 comprises a bonding portion that is bonded to the ceramic pipe 21 by active metal brazing using an AgCuTi-based, AgCuInTi-based, or AgCuSnTi-based metal.
B23K 1/19 - Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
H01G 5/04 - Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaftProcesses of their manufacture using variation of effective area of electrode
A control device (4) for this dynamometer system comprises: a feedback controller (50) that generates a feedback input signal on the basis of a torque detection signal and a feedback command signal corresponding to said torque detection signal; a natural vibration suppression circuit (52) that generates a correction signal so that natural vibration of a vibration element is suppressed; an inverter input generation unit (53) that generates an inverter input signal on the basis of the feedback input signal and the correction signal; and a command generation unit (7) that generates the feedback command signal on the basis of the torque detection signal and a speed detection signal. The command generation unit (7) generates the feedback input signal from a signal generated on the basis of the speed detection signal and the torque detection signal through band stop processing that attenuates a component within a stop band and allows a component outside of the stop band to pass.
G01L 3/16 - Rotary-absorption dynamometers, e.g. of brake type
G05B 11/32 - Automatic controllers electric with inputs from more than one sensing elementAutomatic controllers electric with outputs to more than one correcting element
The purpose of the present invention is to provide a stator in which the shape of a tooth is improved. This stator is a rotating machine stator that is disposed outside a rotor in the radial direction with an air gap interposed therebetween, said rotor having a shaft extending along the central axis, and has a stator core comprising laminated steel sheets. The stator core has a plurality of teeth extending from the radial outside to the radial inside and each having a radial inside end as a tip. At least one of the plurality of teeth has: a base portion extending from the radial outside to the radial inside; and a flange portion that is wider to both sides in the circumferential direction than the base portion on the radial inside of the base portion. The flange portion has a groove portion that is recessed toward the radial outside at the radial inside end. When the rising angle of the flange portion is denoted by θ1, the rising angle of the groove portion by θ2, the width of the teeth by t1, the width of the flange portion by t2, and the distance between the ends of the groove portion by w, the relationship of t2 > w > t1 and θ1 > θ2 is satisfied.
A bubble generation device is provided which is capable of efficiently peeling off contaminants from a surface of a filtration membrane. There is provided a bubble discharge chamber disposed above a turnaround portion of a turnaround path. The turnaround path includes a first communication port communicating with a gas storage chamber and a second communication port communicating with the bubble discharge chamber on a downstream side of the turnaround portion. Each of the gas storage chamber and the bubble discharge chamber includes an opening facing downward at a lower end. A cross-sectional area of the bubble discharge chamber in a horizontal direction is equal to or larger than an opening area (a sum of the opening areas of the two second communication ports in an illustrated example) of the second communication port.
A bubble generation device is provided which is capable of discharging bubbles of about the same size from each of a plurality of bubble discharge ports. The device is provided with a bubble discharge chamber communicating with each of a plurality of bubble discharge ports, a turnaround path including a first communication port communicating with a gas storage chamber and a second communication port communicating with the bubble discharge chamber on a downstream side in a gas traveling direction of a turn-around point of the turnaround path, opening areas of the plurality of bubble discharge ports being the same as each other, and a total of the opening areas of the plurality of bubble discharge ports being smaller than an opening area of the second communication port.
B01F 23/232 - Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
Power conversion device has first position/rotation detector 14, second position/rotation detector 15 whose resolution per rotation of motor is higher than the first position/rotation detector 14 but whose detection cycle is slower than the first position/rotation detector 14 and encoder switching operation process unit 18. The encoder switching operation process unit 18 switches signals between the first and second position/rotation detectors 14, 15 and outputs the signal of the first position/rotation detector 14 or of the second position/rotation detector 15, or adjusts a ratio of the signal between the first and second position/rotation detectors 14, 15 and output a signal obtained by adding adjusted signals. With this, in the power conversion device, the encoder having high resolution and slow detection time and the encoder having low resolution and fast detection time are properly used according to rotation speed, and current and the rotation speed are controlled with high accuracy.
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
74.
Vehicle system vibration suppression control device and vibration suppression control method
A vehicle system vibration suppression control device is provided for a vehicle system in which a vehicle is driven via an elastic shaft by a motor drive device having a torque control function. The vehicle system vibration suppression control device includes: a section containing an approximate model to which an output torque command is inputted; and a feedback control section. The feedback control section is configured to: employ the approximate model; calculate a motor-accelerating torque component by differentiating a measured speed component of a motor rotational speed; produce a compensation torque component by causing the motor-accelerating torque component to pass through a vibration suppression control filter; and calculate the output torque command by subtracting the compensation torque component from an input torque command. The vibration suppression control filter is expressed by a second order mathematical expression.
H02P 23/04 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
H02P 23/12 - Observer control, e.g. using Luenberger observers or Kalman filters
75.
FILTRATION MEMBRANE UNIT, HOLDING BODY, FILTRATION SYSTEM, AND FILTRATION TREATMENT EQUIPMENT
A filtration membrane unit 21 is equipped with at least a filtration membrane 22 and causes a filtrate within the filtration membrane 22 to flow in, of the long direction and the short direction of the filtration membrane 22, the long direction. The filtration membrane unit is further equipped with a socket 23 into which an end of the filtration membrane 22 on one side in the long direction is inserted, and which entirely covers peripheral surfaces including the obverse surface, the reverse surface, and the two lateral surfaces of said end. The socket 23 comprises: a socket body 23a that is provided with a recess into which said end is to be inserted; and a first protruding body 23b and a second protruding body 23c that protrude from an end face on one side in the long direction of the socket body 23a, in said direction.
This filtration system comprises a plurality of filtration membrane units in which a filtrate taken into the interior of the filtration membrane flows along the lengthwise direction of the filtration membrane, an accommodation space for accommodating the filtrate discharged from each of the plurality of filtration membrane units, an upper connecting flow passage (50) connecting an upper portion of the accommodation space to an external space above the accommodation space, and a lower connecting flow passage (51) connecting a lower portion of the accommodation space to an external space below the accommodation space, said filtration system being equipped with a guiding tube 150, which comprises a tubular member in which through-holes 152 are provided in the peripheral wall, is connected to the upper connecting flow passage 50 and the lower connecting flow passage 51 and guides the flow of liquid between the upper connecting flow passage 50 and the lower connecting flow passage 51, and into the interior of which the filtrate in the accommodation space is taken in through the through-holes 152.
B01D 63/00 - Apparatus in general for separation processes using semi-permeable membranes
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
77.
FILTRATION MEMBRANE UNIT, HOLDER HOLDING SAME, FILTRATION SYSTEM HAVING FILTRATION MEMBRANE UNIT AND HOLDER, AND FILTRATION TREATMENT FACILITY HAVING PLURALITY OF FILTRATION SYSTEMS
Provided is a filtration membrane unit 21 comprising: a filtration membrane 22; and a suction-side socket 23 fixed to an end on one side in a longitudinal direction of the filtration membrane 22 to hold the filtration membrane 22 on the one side in the longitudinal direction, wherein the suction-side socket 23 extends in the lateral direction of the filtration membrane 22 while being fixed to the end, the suction-side socket 23 includes a recess into which the end is inserted, a channel extends in the extending direction of the suction-side socket 23 while communicating with the recess, and discharge ports for discharging the filtrate in a flow path, and the suction side socket 23 includes as the discharge ports, a first outlet (provided in a first projecting body 23b) disposed on one side in the extending direction rather than the center of the extending direction of the suction-side socket and a second outlet (provided in a second projecting body 23c) disposed on the other side in the extending direction rather than the center of the extending direction of the suction-side socket 23.
Provided is a holder that holds a plurality of filtration membrane units, in a manner arranged in the thickness direction of each filtration membrane, by means of a water collection cassette 41 holding each of the ends on one side in the longitudinal direction of the plurality of filtration membrane units and a blind cassette holding each of the ends on the other side in the longitudinal direction of the filtration membrane units, wherein among regions surrounded by the outer edge of the cross section of the water collection cassette 41 along a direction orthogonal to the facing direction of the water collection cassette 41 and the plurality of filtration membrane units held in the water collection cassette, in a region facing the plurality of filtration membrane units along the facing direction, a plurality of through openings (101 to 112) are arranged to penetrate the water collection cassette 41 along the facing direction.
A retainer for holding a plurality of filtration membrane units so as to be aligned in the thickness direction of the filtration membranes by means of a water collection cassette 41 that holds the ends on one side of the plurality of filtration membrane units in the longitudinal direction and a blind cassette that holds the ends on the other side of the filtration membrane units in the longitudinal direction. Within the area surrounded by the outer edge of the cross-section of the water collection cassette 41 along a direction orthogonal to the face-to-face direction in which the water collection cassette 41 and the plurality of filtration membrane units held in the water collection cassette face each other, through openings (101-112) that penetrate the water collection cassette 41 along the face-to-face direction are arranged in the area facing the plurality of filtration membrane units along the face-to-face direction.
In a cylindrical guard electrode (5) provided on the outer peripheral side of an electron generation part (31) of an emitter (3), a distal end section (5A) 5 positioned in the emission direction of an electron beam (L1) from the electron generation part (31) includes: a distal end inner-peripheral-side part (A1) having an inner-peripheral-side curved surface portion (a1) convex in the emission direction; a distal end outer-peripheral-side part (A2) having an outer-peripheral-side curved portion (a2) convex in the emission direction; and a 10 distal end middle part (A3) positioned between the distal end inner-peripheral-side (A1) and the distal end outer-peripheral-side part (A2). The distal end middle part (A3) has a flat surface portion (a3) between the inner-peripheral-surface portion (a1) and the outer-peripheral-side curved surface portion (a2) so as to extend in the direction therebetween.
The present invention achieves a reduction in the weight of a receptor used as a lightning countermeasure for a blade of a wind power generation device. This receptor 10 is attached to a tip of a blade constituting a rotor 4 of a wind power generation device 1. The receptor 10 comprises: a receptor body 20 composed of a composite alloy disclosed in patent document 3 as a receptor material; and a cavity part 21 inside the receptor body 20. A bottom section 22 of the receptor body 20 is attached to a receptor anchor 12 by bolts 25. In a side section 20a, a notch section 29 for performing fastening/unfastening of the bolts 25 inside the cavity 21 is formed.
The purpose of the present invention is to reduce the time and effort required for the maintenance and inspection work of filtration membrane units. This filtration system is equipped with a plurality of filtration membrane units (21), and a water collection pipe (90) provided with a main pipe (91) and a plurality of individual water collection channels that are aligned in the axial direction of the main pipe (91) and that communicate with the main pipe (91). This filtration system collects filtrate filtered by the filtration membrane (22) in each of the plurality of filtration membrane units (21), into the main pipe (91) of the water collection pipe (90) through a discharge channel and the individual water collection channels of the water collection pipe (90). This filtration system is equipped with a locking member (98) that locks the axial movement of the discharge channel in each of the plurality of filtration membrane units (21). Each of the plurality of filtration membrane units (21) is equipped with an O-ring comprising elastic material on the outer circumference of a discharge pipe that forms the discharge channel, and the discharge pipe is inserted into the individual water collection channels and locked against axial movement by the locking member (98).
This vacuum capacitor comprises, as major elements in a vacuum container (1A): a fixed electrode (7); a movable electrode support portion (91) that is disposed opposite the fixed electrode (7) and is movable in an axial direction (Y); a movable electrode (8) that is provided on the movable electrode support portion (91) opposite the fixed electrode (7), and that forms a capacitance between the movable electrode (8) and the fixed electrode (7); a tubular bellows (14) that is supported at one end on a movable-side conductor (6) side of the movable electrode support portion (91) and at the other end on the movable-side conductor (6); and a heat-dissipating portion (17). The heat-dissipating portion (17) has a tubular shape extending in the axial direction (Y) between a tubular body (1a) and the bellows (14) in a vacuum chamber (15), and is supported closer to the outer periphery than the bellows (14) on the movable electrode support portion (91).
In a gate drive circuit of a power converter having semiconductor devices connected in series, a plurality of pulse transformers tr1, tr2 have first windings tr1a, tr2a connected in series, and secondary windings tr1b, tr2b directly or indirectly connected to respective semiconductor devices S1, S2, the pulse transformers tr1, tr2 transmitting electric power, or electric power and a control signal, from the primary side to the secondary side while insulating the primary side and the secondary side from each other. An auxiliary winding 3 magnetically couples the plurality of pulse transformers tr1, tr2 to each other. Provided is a gate drive circuit of a power converter in which an imbalance of applied voltage due to manufacturing variations and the like in a pulse transformer is eliminated.
C04B 35/453 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zinc, tin or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
Provided is a rotary electric machine including: a rotary electric machine body that has a rotor and a stator; and a housing that accommodates the rotary electric machine body. In the housing, a refrigerant path for a refrigerant is disposed along the peripheral direction of the rotary electric machine body. The refrigerant path has an inflow port at one side in the axial direction and has an outflow port at the other side in the axial direction. The inflow port and the outflow port are away from each other in the peripheral direction. A rib that extends in the axial direction between the inflow port and the outflow port and that projects radially is formed in an inner peripheral surface of the refrigerant path. The rib extends from an inner wall of the refrigerant path at one side toward the other side. A first gap is formed between an end of the rib at the other side and the inner wall of the refrigerant path at the other side. The radial projection amount of the rib is less than the radial length of the refrigerant path. A second gap is formed between the rib and an outer peripheral surface of the refrigerant path.
The objective of the present invention is to provide a bubble generating device (30) capable of causing a plurality of bubbles to impinge substantially simultaneously upon a filter membrane. The bubble generating device (30) comprises a housing (40) including a plurality of side plates, and a top plate (32) which is fixed to the plurality of side plates to as to cover, from above, a space enclosed by the plurality of side plates, a plurality of bubble discharge openings (32a) disposed in the top plate (32), aligned in a longitudinal direction of the top plate (32), and a bubble discharge chamber (35) which is disposed in the housing (40) and which communicates with the plurality of bubble discharge openings (32a), wherein: a folded-back path (36) is formed, at least, from a folded-back plate (45) having a cross-sectional shape that extends downward and then folds back upward, and an inner plate (46) disposed inside the folded-back plate (45); one end in the longitudinal direction of each of the folded-back plate (45) and the inner plate (46) is fixed to one of two side plates, among the plurality of side plates, that face one another in the longitudinal direction; the other end in the longitudinal direction of each of the folded-back plate (45) and the inner plate (46) is fixed to the other of said two side plates; one side in a lateral direction of the folded-back path (36) communicates with the bubble discharge chamber (35); and the other side in the lateral direction of the folded-back path (36) communicates with a gas storage chamber 35.
This test system comprises: a dynamometer connected to a test piece W; an inverter for supplying electric power to the dynamometer; an encoder for generating a speed detection signal N corresponding to a rotational speed of the dynamometer; and a dynamometer control device 6 for generating a torque current command signal DYref. The dynamometer control device 6 comprises: a response model 61 that receives a higher-order speed command signal Nr and outputs a model speed command signal Nr′; a feedforward controller 62 that receives the higher-order speed command signal Nr and outputs a feedforward input uff; and a speed controller 64 that generates the torque current command signal DYref on the basis of a feedback input ufb generated on the basis of a deviation e between the model speed command signal Nr′ and the speed detection signal N, and the feedforward input uff.
A flat ceramic membrane 1 has a plate-shaped porous support 21 made of ceramics and a filtration membrane 22 formed on an outer surface of the porous support 21. A plurality of water collection channels 2 where filtrate water obtained by permeation of water-to-be-treated through the filtration membrane 22 flows are formed inside the porous support 21. Further, a region where a thickness between a membrane surface 20 of the filtration membrane 22 and the water collection passage 2 is different is ensured inside the porous support 21.
B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
A 6th-order harmonic correction unit 100 receives input of a voltage command Vcmd and a phase command θv and determines the amplitude value Vx6, Vy6 of a 6th-order correction component when the voltage command Vcmd exceeds a saturation voltage VB. A corrected voltage command Vx, Vy is determined on the basis of the amplitude value Vx6, Vy6 of the 6th-order correction component. Switching element gate signals Gu to Gw are generated on the basis of the corrected voltage command Vx, Vy. In a voltage-type inverter, output voltage is expanded beyond a voltage limit, and both the amplitude and frequency bandwidth of a harmonic are suppressed.
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
91.
Power conversion system and method for controlling power conversion system
A higher control unit 1 generates a command current i* based on a command value. A model predictive control unit 2 sets a plurality of assumed voltage vectors for each switching cycle of an output voltage, divides the switching cycle of the output voltage into two periods according to a ratio between a dead time and the switching cycle of the output voltage, calculates a predicted current of the assumed voltage vector for each of the two periods obtained by the two-dividing, determines an evaluation function between the assumed voltage vector and the predicted current, sets the assumed voltage vector which has highest evaluation function result, as a command voltage vector. A gate signal g for outputting a voltage expressed by the command voltage vector from the power converter is output. The power converter is driven and controlled based on the gate signal.
H02M 7/539 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
H02P 21/14 - Estimation or adaptation of machine parameters, e.g. flux, current or voltage
H02M 1/38 - Means for preventing simultaneous conduction of switches
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
H02P 21/22 - Current control, e.g. using a current control loop
This evaluation device, which performs evaluation of the operation status of a plant including a plurality of facilities, comprises: a display unit; and an evaluation unit that derives an evaluation value on the basis of two reference values and causes the display unit to display a three-dimensional graph of the relationship between the two reference values and the evaluation value. The evaluation unit causes the display unit to display a relationship including information that indicates the chronological changes in the reference value attendant to the chronological changes in the two reference values. The two reference values pertain to the operation statuses of two facilities, or two pieces of equipment included in one facility. In the three-dimensional graph, one of the three axes is one of the two reference values, another of the three axes is the other of the two reference values, and the remaining of the three axes is the reference value.
A flat ceramic membrane 1 has a plate-shaped porous support 21 made of ceramics and a filtration membrane 22 formed on an outer surface of the porous support 21. A plurality of water collection channels 2 where filtrate water obtained by permeation of water-to-be-treated through the filtration membrane 22 flows are formed inside the porous support 21. Further, a region where a distance between the water collection channels 2 is different is ensured inside the porous support 21.
The present invention suppresses the deterioration of the life of a rotation detection sensor due to temperature rise caused by the heat generation of a semiconductor module. The motor of the present invention comprises: a motor housing; an electrical component housing; an electrical component cover for sealing the opening of the electrical component housing; and an electrical component refrigerant flow path through which a refrigerant for cooling the electrical component housing or the semiconductor module within the electrical component cover flows and a part of which in a refrigerant flow direction is disposed in the electrical component housing. The motor also comprises a rotation detection sensor for detecting the rotation of the rotor and a sensor housing casing 113b disposed inside the electrical component housing and housing the rotation detection sensor. The electrical component refrigerant flow path (flow path box portion 142c) is disposed in the form of being interposed between the semiconductor module and the sensor housing casing 113b.
According to the present invention, it is possible to cool electric components more efficiently than conventional products. A motor comprising: a rotating machine housing that houses a rotor and a stator; an electric component housing 113 that houses a switching unit serving as a high-speed semiconductor unit, and that is adjacent to the rotating machine housing on the other side, out of one side and the other side in the axial direction (arrow A-B direction) parallel to the rotational axis of the rotor 2; an electric component cover that closes, at an end on the other side in the axial direction of the electric component housing 113, an opening oriented to the other side; and an electric-component refrigerant flow path through which a refrigerant for cooling the switching unit in the electrical equipment housing 113 flows, and at least a portion of which in the refrigerant flowing direction is disposed within the electric component housing 113. The motor is characterized in that: a semiconductor module 164 of the switching unit constitutes at least a wall of said portion; and at least in said portion in the electric-component refrigerant flow path, the refrigerant in the inside comes directly into contact with the semiconductor module 164.
The present invention prevents a drop in strength or damage etc. to a case caused by warpage or the like, and improves the safety/reliability of an electrical device. A resin case 1 is joined by snap fits 15a, 15b, and top and bottom cases 12, 13 comprise ceiling portions 12a, 13a and side plates 12b-12e, 13b-13e. A sheet metal leg 16 is insert molded on the side plates 12b, 12d of the top case 12. The sheet metal leg 16 is formed in an L-shape and comprises a fixing part 16a fixed to the side plates 12b, 12d, and an attachment part 16b. A through-hole 16c for screw fixing is formed on the attachment part 16b. The height of the fixing part 16a is provided at a lower position than a case joining surface during the joining of both cases 12, 13. A recessed portion 17 is formed in the side plates 13b, 13d of the bottom case 13. A clearance is provided between a bottom wall 17a of this recessed portion 17 and the fixing part 16a.
H05K 5/02 - Casings, cabinets or drawers for electric apparatus Details
B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric
H02G 3/08 - Distribution boxesConnection or junction boxes
A high voltage generator including a Cockcroft-Walton circuit structured to receive alternating-current power supplied from an alternating-current power source and apply a potential difference to a load includes: three or more circuit boards arranged at intervals in a thickness direction thereof; capacitors, each of which is shaped flat and mounted to a corresponding one of the circuit boards; and diodes, each of which is connected to corresponding ones of the circuit boards. Out of the three or more circuit boards, each circuit board other than two circuit boards disposed at both ends of the arrangement of the three or more circuit boards includes indentations. Each of the diodes is disposed in a corresponding one of the indentations.
A vacuum container is configured so that an opening on one side and an opening on another side in the longitudinal direction of a cylindrical insulating body are sealed with an emitter unit and a target unit respectively; and a vacuum chamber is provided on the inner peripheral side of the insulating body. The emitter unit is provided with: a moving body located on the one side in the longitudinal direction in the vacuum chamber and supported so as to be movable in the longitudinal direction via a bellows; and a guard electrode located on the outer peripheral side of the moving body. An emitter section having an electron generating section is formed at a tip section of the moving body on the other side in the longitudinal direction by subjecting the surface of the tip section to film formation processing.
a) having a larger diameter than an opening diameter of the emitter supporting unit female screw bore (45) and extending along radial direction of the pressing shaft.
