The apparatus for retaining a plug within a receptacle may include a receptacle body and a release device. In one embodiment, the receptacle body may include at least one tab, and the at least one tab may include at least one barb. When a plug is inserted into the receptacle body, the plug may cause the at least one tab to extend toward an exterior side of the receptacle body while the at least one tab remains in contact with the plug. The plug may be retained within the receptacle body with the pressure applied by the at least one tab to the plug. In order to release the plug, the release device may come into contact with the at least one tab, cause the at least one tab to extend away from the plug, and allow the plug to be released from the receptacle body.
H01R 13/62 - Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
H01R 4/50 - Clamped connectionsSpring connections using a cam, wedge, cone or ball
H01R 24/78 - Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall with additional earth or shield contacts
A method reduces inrush currents in a transformer-less rectifier UPS system when an input circuit breaker (102) of the UPS system is closed from an open position. The circuit breaker is coupled between an AC power input (130) and an AC input of a rectifier (104) of the UPS system and a DC output (108) of the rectifier is coupled to a DC bus (110) of the UPS system. Before the circuit breaker is closed, the DC bus is charged to a DC voltage having a level that is equal to a peak AC voltage level of a line-line AC voltage of AC input power to the UPS system. The rectifier is operated as an inverter to provide an AC output voltage at the AC input of the rectifier that is equal to an AC voltage at the AC power input and when it is equal, the circuit breaker is closed.
H02H 7/125 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for rectifiers
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02H 9/00 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
3.
HYBRID AIR HANDLER COOLING UNIT WITH BI-MODAL HEAT EXCHANGER
A hybrid air handler cooling unit (100) has a bi-modal heat exchanger (102). In a direct expansion mode or a pumped refrigerant economization mode, the bi-modal heat exchanger (102) is in a refrigerant path in parallel with first and second condenser coils (164,206) and functions as a condenser coil. In a mixed direct expansion/pumped refrigerant economization mode, the bi-modal heat exchanger (102) is in a refrigerant path in series between an outlet of a pump (180) and an inlet (204) of the first condenser coil (164) and functions as a pre-cooler evaporator coil with return air (266) first flowing across the bi-modal heat exchanger and then across an evaporator coil (192) of an evaporator (114).
A method including: determining whether a cooling system is operating in a cooling mode, such that the cooling system is not operating in a reheat mode, a humidification mode or a dehumidification mode; determining whether the cooling system is operating in a compressor mode, such that the cooling system is not operating in a pump refrigerant economization mode; determining whether the cooling system is at steady-state; and if the cooling system is operating in the cooling mode and the compressor mode and is at steady-state, evaluating one or more rules to determine if a degradation symptom exists for the cooling system. The method further includes: subsequent to the evaluation, generating a degradation evaluation value to indicate whether the one or more rules are satisfied; and based on the degradation evaluation value, generating an alarm signal or performing a countermeasure.
A modular data center system is disclosed for constructing a modular data center building. A plurality of structural support columns are used to support a plurality of unit structures above a floor surface at a desired height relative to the floor surface. A pair of elongated support rails are also included which are coupled perpendicularly to the plurality of structural support columns, at approximately the desired height, to form two parallel, horizontally spaced apart tracks. Each of the unit structures includes a plurality of carriage assemblies, with each of the carriage assemblies including a wheel. The wheels allow the unit structures to be rolled horizontally into a desired position on the pair of elongated support rails when constructing the modular data center building to expedite its assembly.
The present disclosure relates to a processor based system for using temperature information being reported by a plurality of sensors present within a predetermined environment and controlling how various ones of the sensors are grouped together into a plurality of groups for monitoring purposes. The system includes a software subsystem that generates an association matrix screen on a display system associated with a computer system being used by a user with receives the temperature information. The association matrix screen enables a user to associate or disassociate specific sensors with selected groups of sensors using selection commands, as well as to provide temperature related information concerning all of the sensors being monitored by the system. Each of the sensors is not limited to being assigned to only a single group of sensors but may instead be assigned to two or more different groups of sensors for purposes of monitoring and/or control.
The present disclosure relates to a computer based system for collecting, analyzing and presenting temperature information from sensors associated with an HVAC system. The system makes use of a processor for communicating with the plurality of sensors and obtaining temperature data reported by each of the sensors. A graphical user interface (GUI) module is provided which is embodied in a non-transient medium and configured to run on a computing device having a display screen. The user GUI module uses the temperature data, in real time, to generate a graph on the display screen. The graph includes a plurality of components each having different indicia to indicate groups of sensors that are below a predetermined lower temperature limit, above a predetermined upper temperature limit, and within a predetermined temperature range. Standard deviation information may be supplied with the graph which relates to the maximum standard deviation of those groups of sensors that are reporting temperatures above and below the predetermined temperature range.
A cooling system for an equipment closet in a building has a direct expansion cooling circuit. The cooling system has two basic modes of operation. A first mode where the direct expansion cooling circuit is off and transfer air from an area of the building outside the equipment closet is used to cool the interior of the equipment closet without any cooling provided by the direct expansion cooling circuit and a second mode where the direct expansion cooling circuit is on and provides direct expansion cooling that is used to cool the interior of the equipment closet.
A cooling system has both pumped refrigerant economization and direct expansion cooling. When outside air temperature is low enough that pumped refrigerant economization can provide enough cooling to satisfy cooling demand, only pumped refrigerant economization cooling is used to provide cooling. When outside air temperature is low enough that pumped refrigerant economization can provide some but not all of the cooling needed to satisfy cooling demand, the pumped refrigerant economization is operated at one hundred percent capacity and the direct expansion cooling is operated at a capacity to provide any supplemental cooling that is needed. If the outside air temperature is high enough that pumped refrigerant economization cannot provide any cooling, then only direct expansion cooling is used to provide cooling.
An uninterruptible power supply system (100) has a flywheel system/battery combination (106) as a source of back-up DC power. When power is restored after a power outage, a controller (302) of the uninterruptible power supply system (100) controls the rectifier (102) to keep its DC output voltage sufficiently low so that only the flywheel system (118) of the flywheel system/battery combination (106) is initially recharged. Once the flywheel system (118) is recharged, the controller (302) is configured to raise the voltage of the rectifier's DC output voltage to the nominal DC output voltage of the rectifier (102), both for recharging the battery pack (116) of the flywheel system/battery combination (106) and to provide DC power to an inverter (104) of the uninterruptible power supply system (100).
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 7/04 - Regulation of the charging current or voltage
H02K 7/02 - Additional mass for increasing inertia, e.g. flywheels
H02J 3/30 - Arrangements for balancing the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
11.
SYSTEM AND METHOD FOR POWER SHARING IN A MULTIPLE UPS SYSTEM
The present disclosure relates to a load sharing system having a plurality of power supplies for powering a plurality of corresponding loads. Each one of the power supplies is associated with at least one of the loads. A power bus is also provided. A plurality of inductors is connected to the power bus. Each one of the inductors is further connected to at least one of the loads and to at least one of the power supplies, such that each adjacent pair of the inductors is connected in parallel relative to at least one of the loads. Each of the inductors has an inductance value sufficient so that if a fault develops on the power bus it serves to isolate the power supplies from the power bus. The inductance value further is such that if any one of the power supplies fails, the specific pair of inductors coupled in parallel to the load associated with the failed power supply allows the load to draw power over the power bus from other ones of the power supplies through the specific pair of inductors.
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
12.
INTELLIGENT POWER STRIP WITH MANAGEMENT OF BISTABLE RELAYS TO REDUCE CURRENT IN-RUSH
The present disclosure relates to a power distribution unit (PDU) having at least one power receptacle for enabling attachment of an AC power cord of an external device thereto. A branch receptacle controller (BRC) has at least one bistable relay and is associated with the one power receptacle for supplying AC power thereto from an AC power source. The BRC monitors a parameter of a line voltage and uses it to detect when AC power is lost, and then toggles the bistable relay, if the relay is in a closed position, to an open position. A rack power distribution unit controller (RPDUC) monitors the bistable relay and commands the BRC to close the bistable relay after AC power is restored.
H02H 1/04 - Arrangements for preventing response to transient abnormal conditions, e.g. to lightning
H02H 3/06 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details with automatic reconnection
H02H 3/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current
H02H 3/46 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to frequency deviations
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
13.
METHOD FOR BALANCING POWER IN PARALLELED CONVERTERS
A method is provided for balancing power amongst parallel connected power converters in an uninterruptible power supply (UPS). The method includes: applying a control signal to each of the parallel connected power converters, where the control signals applied to the parallel connected power converters are derived from a common control signal output by a centralized controller; receiving measurements of current being supplied by each power converter to the load; and adjusting phase of voltage applied to at least one of the power converters based on the received current measurements, such that the phase adjustment causes same magnitude of current to flow though each filter. Advancing phase angle of the voltage increases current supplied by the at least one power converter while retarding phase angle of the voltage decreases current supplied by the at least one power converter.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
14.
CYCLE-BY-CYCLE CURRENT LIMITING METHOD AND DEVICE, AND INVERTER CIRCUIT
A cycle-by-cycle current limiting method and device, and an inverter circuit, which are used to solve the problem that when an existing cycle-by-cycle current limiting method is utilized to wave-seal an inverter, wave sealing of all of switching tubes may lead to a high-voltage failure in a bus and may also affect the capability of the inverter in supplying power to a load. The method comprises: determining a current on an energy storage inductor in an inverter to be greater than or equal to a current at a first current limiting point and smaller than a current at a second current limiting point (S401); wave-sealing a main pipe in the inverter, and transmitting waves to auxiliary pipes in the inverter on the basis of a first wave-transmission timing sequence, the first wave-transmission timing sequence being a timing sequence of drive signals of the auxiliary pipes in the inverter when the current on the energy storage inductor is smaller than the current at the first current limiting point during the working process of the inverter (S402); determining the current on the energy storage inductor to be greater than or equal to the current at the second current limiting point (S601); and wave-sealing the main pipe in the inverter, and wave-sealing the auxiliary pipes in the inverter (S602).
A real current meter reads current from a current probe coupled around power lines of a transformer-based UPS system coupled to a transformer having a high resistance ground with a HRG resistance and determines a real current component of the current read from the current probe.
A method and device for controlling a two-wire discharge circuit of a battery, introducing a whole-bus voltage outer loop and an inductive current average value or inductive current actual value closed loop as a main control loop of the two-wire discharge circuit of the battery so as to guarantee a stable voltage of the whole bus. On the basis of the main control loop, duty ratios of switch transistors (TA1, TA2; TB1, TB2; TC1, TC2) in respective discharge branches are adjusted to control the respective discharge branches to independently charge and discharge corresponding half-buses (BUS+, BUS-) so as to balance the bus voltage. The method and the device avoid accessing a central wire of the battery and any additional circuits, and satisfy a technical specification of a three-wire access of the battery, thereby improving a circuit performance of the two-wire discharge circuit of the battery.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
17.
METHOD FOR DETECTING A FAILING RECTIFIER OR RECTIFIER SOURCE IN A UPS
A method is provided for detecting a failure of a rectifier (4) or a rectifier source (16) in context of an uninterruptible power supply. The method includes: measuring an input current (IDe) into the rectifier (4) from a primary power source (16); determining a rate of change (d/dt IDe) in the measured current; determining a current difference (IDe_error) between a reference current (IDe_cmd) and the measured current (IDe); measuring voltage output (VDCbus) by the rectifier; determining a voltage difference (VDC error) between a reference voltage (Vref) and the measured voltage (VDC Bus); and detecting a failure condition of the rectifier (4) as a function of the measured input current (IDe), the rate of change in the measured current (d/ dt IDe), the current difference (IDE error), the measured voltage (VDC Bus) and the voltage difference (VDC error). More specifically, a failure condition of the rectifier is identified when the input current (IDe) is decreasing and the rate of change in the measured current (d/dt IDe) is decreasing and the current difference (IDe error) is increasing and the voltage difference (VDC error) is increasing.
H02M 7/219 - 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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
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
A tool suspension device includes a suspension member, a first and a second receiving members. The suspension member is protrudedly formed with a first and a second pivot structures at two ends. The suspension member has a suspension portion for suspension. The first and the second receiving members are pivotably connected with the first and the second pivot structures respectively. Thus, the first receiving member and the second receiving member are able to be piled together for storing. Also, the first and the second receiving members are able to pivot to be unfolded for available of tools for a user.
B65D 85/28 - Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles for pencils or pens
In an aspect, a cooling system has a cooling circuit that includes an evaporator, a condenser, a compressor, a sub-cooler and an expansion device configured in a direct expansion cooling circuit with the sub-cooler coupled in series between an outlet of the condenser and an inlet of the expansion device. The condenser has a micro-channel cooling coil and the sub-cooler has a fin-and-tube cooling coil. In an aspect, the fin-and-tube cooling coil of the sub-cooler has a total hydraulic volume equivalent to the total hydraulic volume of the micro-channel cooling coil of the condenser but the fin-and-tube cooling coil of the sub-cooler has a face area more than two times smaller than a face area of the micro-channel cooling coil of the condenser.
A cooling door assembly includes a frame and a cooling door coupled to the frame. The cooling door includes multiple heat exchangers. The frame is configured to mount to the back of a server rack or other electronics enclosure in such a manner that the cooling door opens to allow access to the electronics servers within the server rack while maintaining a fluidic connection to an external cooling system. The frame is coupled to the external cooling system and the cooling door includes one or more swivel joints, each configured to provide one or more fluid paths between the cooling door and the frame. The cooling door assembly includes separate and independent fluid paths, where fluid is separately provided to each independent fluid path. Different groups of heat exchangers are coupled to each independent fluid path. In the event of failure of one of the independent fluid paths, the other independent fluid path(s) remain operational.
A microchannel heat exchanger (100) with improvement of dirt-resisting and anti-blocking is disclosed. The microchannel heat exchanger (100) includes at least two heat exchanger units (101, 102) vertically arranged in parallel with the top one being a first heat exchanger unit (101) and the bottom one being a second heat exchanger unit (102). Every heat exchanger unit (101, 102) includes: a first heat tube (103) and a second heat tube (104) oppositely arranged in the horizontal direction; and multiple flat tubes (105) extending between the first and second heat tubes (103, 104) and having both ends communicated with the first and second heat tubes (103, 104). The microchannel heat exchanger (100) also includes multiple fins (109) each arranged between and in contact with the neighboring flat tubes (105) of the same heat exchanger unit and extending from the first heat exchanger unit (101) to the second heat exchanger unit (102). The microchannel heat exchanger (100) overcomes the disadvantage of becoming dirty and blocking and has excellent heat dissipation effect.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 1/12 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
22.
REPETITIVE SERVOMECHANISM CONTROLLER FOR UNINTERRUPTIBLE POWER SUPPLY SYSTEM
A repetitive servomechanism controller for a UPS system has an inner control loop and an outer control loop. The inner control loop regulates inverter current and the outer control loop regulates inverter voltage. The outer control loop includes a repetitive controller in combination with a harmonic servomechanism controller and a feed-forward controller.
H02J 9/00 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
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
23.
METHOD TO SELECT OPTIMAL SYNCHRONIZATION SOURCE IN A MULTIPLE UNINTERRUPTIBLE POWER SUPPLY SYSTEM
A multiple uninterruptible power supply system includes at least two uninterruptible power supply modules. Each uninterruptible power supply module has a control unit with the control unit coupled to a synchronization bus. The uninterruptible power supply module are synchronized to each other with one of the uninterruptible power supply modules being operated as a sync master UPS and its control unit sending synchronization signals on the synchronization bus that are received on the synchronization bus by control units of each of the other uninterruptible power supply module which are each operated as a slave UPS synchronized to the sync master UPS. When a bypass power source for the uninterruptible power supply module that is being operated as the sync master becomes unqualified, another one of the UPS modules is operated as the sync master and its control unit then sends out the synchronization signals.
A modular data center (10) is disclosed. The modular data center may have a plurality of unit structures arranged generally parallel to one another. A plurality of supports (16) may be used for supporting the unit structures elevationally above a floor, and wherein adjacent ones of the unit structures form hot aisles (17) therebetween through which hot air generated from equipment racks (14) may be channeled. Each unit structure may form an elongated structure having a frame structure (28), a roof panel (42) supported by the frame structure, and a ceiling panel (26). The unit structures may be used to channel cold air to the equipment racks (14) and hot air from the hot aisles out from the unit structures.
The present disclosure relates to a modular DC power unit having a form factor enabling mounting in at least one of a plurality of component locations of an equipment rack. The modular DC power unit provides DC power to a DC bus of the equipment rack. The modular DC power unit may have a chassis defining a plurality of slots into which a plurality of DC power supplies may be inserted. An AC input module may be used for receiving AC power from an external AC power source. A plurality of independent, modular DC power supplies, each having a form factor enabling insertion and mounting in one of the slots of the chassis, may be mounted in the chassis. A controller may be in communication with the DC power supplies and housed within the chassis. A DC bus housed within the chassis communicates with the DC power supplies and supplies DC output power from the DC power supplies to the separate DC bus housed within the equipment rack.
A system and method is disclosed for analyzing a set of collected raw data point values and determining which one or ones of the values are erroneous data values. In one implementation of the method specific ones of the values are examined to determine if they are outliers, and if so they are removed from the data set. At least two other ones of the values obtained at points in time prior to a given one of the values are examined. Weights may be assigned to the at least two other values, and the weights used to help generate a predicted data point value. The predicted data point value is compared to the given one of the values to determine if the given one of the values is an erroneous value. In this way the integrity of each data point value in the set can be checked.
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
27.
FAULT DETECTION IN A COOLING SYSTEM WITH A PLURALITY OF IDENTICAL COOLING CIRCUITS
In a cooling system having a plurality of identical cooling circuits, fault detection is determined by a controller if monitored operating parameters of the cooling circuits differ from each other by an appreciable amount. In an aspect, the controller uses a comparison of the operating parameters of a cooling circuit to a snapshot of the operating parameters of that cooling circuit taken after the cooling circuit is determined to be operating properly after start-up. In an aspect, the controller uses known operating parameters of a cooling circuit and a system model of the cooling circuit to calculate remaining operating parameters of the cooling circuit (system model operating parameters) and uses a comparison of the system model operating parameters to the monitored operating parameters.
A battery cell terminal quick connect clamp for attaching to a battery cell terminal has a conductive contact coupled to a connecting element to which a connector attached to the end of a battery monitoring lead can attach. The quick connect clamp includes a clamping mechanism that when in a clamped position presses the conductive contact against a side of the battery cell terminal.
A cooling system has a direct expansion mode and a pumped refrigerant economizer mode and a controller. The controller includes a load estimator that estimates real-time indoor load on the cooling system and uses the estimated real-time indoor load to determine whether to operate the cooling system in the pumped refrigerant economizer mode or in the direct expansion mode.
A micro-channel heat exchanger comprises a plurality of parallel flat tubes (11) and fins (12) located between the adjacent two flat tubes (11) and in thermal contact with them. A plurality of micro-channels is provided side by side along the length direction of the tubes (11) in each flat tube (11). The fins (12) have a plurality of corrugated side walls (13) and extend along the length direction of the flat tube (11) in form of rectangular-shaped or U-shaped wave. The corrugated side wall (13) is perpendicular to the side surface of the flat tubes (11) and extends along the width direction of the flat tubes (11) in form of corrugated wave. The corrugated side wall (13) is parallel to the direction of the air flow blew by the fan, thus the flow resistance of the air flow in the groove of the fin (12) is appropriate, therefore the airflow level and contact resistance of the air flow are improved, and a better heat exchange effect is obtained. In addition, the rate of dust particles attached in the grooves of the fin (12) is reduced and anti-fouling and drainage abilities of the fins (12) are improved because of the structure of corrugated side walls (13).
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 1/30 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
F28F 3/02 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
31.
Back pressure capable solenoid operated diaphragm pilot valve
A valve assembly comprising an inlet port, an outlet port, and a diaphragm configured to selectively allow communication between the inlet port and the outlet port, the diaphragm including a first side adjacent the ports and a second side opposed to the ports. The valve preferably includes at least one bleed path between the first side and the second side of the diaphragm with a one way flow device configured to allow flow from the first side to the second side of the diaphragm and prevent flow from the second side to the first side of the diaphragm. The valve may include a first bleed path from the inlet port to the second side of the diaphragm and a second bleed path from the outlet port to the second side of the diaphragm. Either bleed path, or both, may comprise a check valve mounted in the diaphragm.
A multiple UPS system has a plurality of UPS subsystems with a separate UPS data communications bus coupling a controller of each UPS subsystem to an associated controller of an associated tie cabinet. The multiple UPS system further includes a data communications tie bus that couples the controllers of the tie cabinets to each other. The controllers of the tie cabinets arbitrate power line based coordinating signals between the UPS buses without the use of auxiliary signals.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.
A battery capacity test system includes one or more wireless battery capacity test ("BCT") sense modules, a continuous load unit, and a wireless data collection unit. The wireless data collection unit interfaces with a computer.. During a battery capacity test, the wireless BCT sense module (or modules) continuously monitors the voltage of the battery cell (or cells) to which it is connected. In an aspect, it also continuously monitors the temperature of the battery cell (or cells) and intercell voltage (or voltages) across an intercell connector (or connectors). Each wireless BCT sense module wirelessly transmits the voltage and temperature data it collects to the wireless data collection unit.
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
35.
CONTROL METHOD DURING ZERO-CROSSING OPERATION OF BRIDGE ARMS IN UPS
A control method during zero-crossing operation of bridge arms in an uninterruptible power supply (UPS). The UPS comprises a rectifying bridge arm consisting of a first switching tube (Q1) and a second switching tube (Q2), a midline bridge arm consisting of a third switching tube (Q3) and a fourth switching tube (Q4), and an inverter bridge arm consisting of a fifth switching tube (Q5) and a sixth switching tube (Q6). The midline bridge arm and the rectifying bridge arm are controlled to synchronously cross zero and the inverter bridge arm is controlled to be disconnected during a period before the zero-crossing point of the rectifying bridge arm and a period after the zero-crossing point of the rectifying bridge arm. The period before the zero-crossing point of the rectifying bridge arm and the period after the zero-crossing point of the rectifying bridge arm are time differences between the zero-crossing points of the inverter bridge arm and the rectifying bridge arm. The method reduces the influence of the asynchronous zero-crossing switching between a power factor correction circuit and the inverter bridge arm on UPS performance indices.
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
A battery monitor device (314) is provided for determining float current in a battery system. The battery monitor device is comprised of: a voltage sense circuit electrically coupled to opposing sides of a connector (106) coupling two battery cells and operable to measure a voltage drop across the connector; a test load circuit that operates to apply a load across the least one battery cell and connector and measure current flow through the connector; and a controller (312) configured to receive voltage drop measures from the voltage sense circuit and current measures from the test load circuit. The controller operates to determine a resistance of the connector and computes a float current flowing through the connector from the resistance and voltage drop measures taken only when a load is not being applied across the connector.
G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
G01R 27/08 - Measuring resistance by measuring both voltage and current
37.
BATTERY MONITOR WITH CORRECTION FOR INTERNAL OHMIC MEASUREMENTS OF BATTERY CELLS IN PARALLEL CONNECTED BATTERY STRINGS
A battery monitor determines an internal resistance of a battery cell of a battery having parallel connected battery strings which accounts for errors introduced by the parallel connected battery strings. When determining the internal resistance of a battery cell, the battery monitor determines a baseline intercell resistance of an intercell connecting the negative terminal of the battery cell to the positive terminal of an adjacent battery. The battery monitor then applies a momentary load across the battery cell and immediately prior to releasing the load, measures the voltage across the battery cell (loaded voltage) and the voltage across the intercell. The battery monitor then calculates the current flowing through the intercell (intercell current) by dividing the measured voltage across the intercell by the determined intercell resistance. Immediately after releasing the load, the battery monitor measures the voltage across the battery cell (recovered voltage) and determines the battery cell internal resistance by dividing the difference between the recovered voltage and the loaded voltage by the intercell current.
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
38.
ENERGY EFFICIENT AIR CONDITIONING SYSTEM AND METHOD UTILIZING VARIABLE CAPACITY COMPRESSOR AND SENSIBLE HEAT RATIO LOAD MATCHING
An air conditioning system that may incorporate a controller, a variable capacity compressor responsive to the controller, an evaporator in communication with an input of the compressor, and at least one cooling component for generating an airflow over the evaporator to generate a cooling airflow using the evaporator, the cooling component being responsive to the controller. A first input enables a user to provide a user determined dry bulb temperature range for an enclosed environment, and a second input enables the user to provide a user determined moisture content range for the enclosed environment. The controller controls at least one of the compressor and the cooling component to vary a sensible heat ratio (SHR), in order to maintain a dry bulb temperature and the moisture content within the enclosed environment in accordance with the user defined ranges.
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
Mounting systems are provided for bringing a heat exchanger from a server rack into thermal contact with a heat exchanger from an electronics server. An engaging force is applied to the two heat exchangers to create thermal communication there between. A mounting mechanism is configured to isolate the engaging force applied to the two heat exchangers. The mounting mechanism may include an interlocking mechanism that prevents transfer of the applied force to the rest of the electronics server to lessen the possibility of disconnecting the electrical connections between the electronics server and the rack, and/or lessening mechanical stresses transferred to the electronics server and the rack chassis. The mounting mechanism also may be coupled to the electronics server locking mechanism such that the action of locking the electronics server into the rack causes the heat exchangers to engage in thermal contact.
An electronic component equipment rack utilizes vertically extending adjustable rails to support electronic components therein. The vertically extending rails are configured to allow a power distribution unit to be attached thereto. The dimensions of the vertically extending rails allow the power distribution unit to be disposed between the attached vertically extending rail and an associated adjacent opposed side of the rack. The vertically extending rails can be Z-shaped with front and rear flanges and a side panel extending therebetween. The power distribution unit can be attached to the rear flange and be adjacent the rear flange and the side panel. The power distribution unit can be flush with the front flange. The rack and the opening between opposing vertically extending rails can conform to the EIA3 10-D standard.
A universal control panel for controlling operation of a cooling component. The universal control panel may have a variable frequency drive (VFD) that incorporates an input voltage and frequency sensing circuit; and logic, memory and communications circuits. The VFD accepts a plurality of differing input signals, analyzes the input signals and generates an output signal having a desired voltage and frequency to provide real time control over an electrical component operably associated with the cooling component. The VFD controls the cooling component in relation to changes in at least one of sensed pressure and a sensed temperature of a fluid, to dampen response of the electrical component, to thus achieve more efficient use of the cooling component being used to cool the fluid.
A system and method for compensating for degradation of a light emitting diode includes accumulating time that the light emitting has been lit. An additional amount of drive current to be provided to the light emitting diode is determined based on the accumulated time that the light emitting diode has been lit. The system includes a controller that accumulates the time that the light emitting diode has been lit and determines the amount of addition drive current to be provided to the light emitting diode.
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
H01S 5/06 - Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
43.
SYSTEM AND METHOD FOR MEASURING BATTERY INTERNAL RESISTANCE
In one aspect the present disclosure relates to a system (50) for measuring an internal resistance of a battery. The system may involve: a processor (54); a load module (70) responsive to the processor for applying a load across the battery; a current sense subsystem (72) for sensing the current flowing to the load module and generating a sensed current signal in accordance therewith; a multiplexer module (58) in communication with the current sense subsystem for detecting voltages with the load coupled across the battery and uncoupled from the battery, and generating voltage signals in accordance therewith; and a filtering and amplification subsystem (52) responsive to the multiplexer module, for filtering and amplifying a level of each of the voltage signals to produce modified voltage signals for use by the processor in determining the battery internal resistance.
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
G01R 27/08 - Measuring resistance by measuring both voltage and current
An uninterruptible power supply (UPS) system that may incorporate a battery subsystem (16) including at least one battery for generating electrical power, and a UPS subsystem (20) including at least one power module. At least one first bus system (38) may couple the battery subsystem to the UPS subsystem to supply electrical power to the UPS subsystem. An input and output (I/O) subsystem (24) is in communication with an output of the UPS subsystem for generating an output signal. At least one second bus system (44) may be used for coupling the output of the UPS subsystem to the I/O subsystem. At least one of the first and second bus systems may include a pair of parallel coupled, independent busses (40,46), and may further have a tie bar for enabling the pair of busses to be reconfigured as a single bus.
H02J 9/04 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
H02B 1/22 - Layouts for duplicate bus-bar selection
45.
INTEGRATED QUIET AND ENERGY EFFICIENT MODES OF OPERATION FOR AIR-COOLED CONDENSER
An integrated quiet and energy efficient modes of operation for an air-cooled condenser according to the present disclosure can allow a user to select operation along a continuum that extends from a relatively more efficient mode of operation to a relatively more quiet mode of operation. The user-selected mode allows a user to select a compromise between efficient operation and quiet operation so that a desired operation of a cooling system having the air-cooled condenser is realized. The speed of a fan which induces an airflow across a condenser can be adjusted based on the user-selected operating mode.
An uninterruptible power supply (UPS) may include direct cooling for various components of the UPS that generate heat. The direct cooling may be part of a cooling system that directs the generated heat to the ambient environment external to the room or building housing the UPS such that the heat load of the UPS places a minimal or zero load on the air-conditioning system for the room within which the UPS is located. The cooling system can utilize multiple cooling loops to transfer the heat from the heat-generating components of the UPS to the ambient environment.
A power supply includes a rectifier that converts an alternating current input voltage to a first direct current voltage. An inverter that converts the first direct current voltage to an alternating current output voltage. A first set of output terminals that receives the alternating current output voltage. A second set of output terminals that receives the first direct current voltage. A charging circuit that charges a backup power source based on the first direct current voltage. The rectifier receives a second direct current voltage from the backup power source based on the power supply operating in a predetermined condition.
H02J 9/04 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
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
An adaptive power strip has a power rail. A power entry module and one or more receptacle modules having plug receptacles are mounted on the power rail. The power entry module has a power inlet to which a source of power can be coupled. The power entry module distribute power from the power source to the power rail. The receptacle modules distribute power from the power rail tot the respective plug receptacles. In an aspect, the power entry module has a communications module that discovers receptacle modules on the power rail having data communications capability and if a receptacle module does not have a unique identifier assigned to it, assigns a unique identifier to the receptacle module that the receptacle module stores in a memory. The communications modules also retrieves from each receptacle module having data communications capability, information about the characteristics of the receptacle module that the communications module stores in a memory. The communications module maintains an inventory in memory of the receptacle modules on the power rail that includes information about the characteristics of the receptacle modules. In an aspect, receptacle modules determine their locations on the power rail and send information to the communications module that the communications module uses to determine the location of the receptacle modules on the power rail. In an aspect, the power entry module determines the type of power service provided to it at its power inlet.
H01R 25/00 - Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
H01R 13/639 - Additional means for holding or locking coupling parts together after engagement
49.
SYSTEM AND METHOD FOR LOAD SHARING IN MULTI-MODULE POWER SUPPLY SYSTEMS
A load sharing, multi-module power supply system (400) for supplying power to a load. The system may involve: a first power supply module (402a) having a controller (418), and having a first per unit capacity (pu-c); a second power supply module (402b) having a controller (418), and having a second per unit capacity (pu-c); the controller of the first power supply module adapted to implement a reduction in an output power of the first power supply module upon the detection of an operating event, where a portion of the load being handled by the first power supply module is shed by a percentage, and such that the first power supply module remains operating during the operating event but at a reduced power output level; and upon the occurrence of the operating event the controller of the second power supply module is adapted to increase a power output of the second power supply module sufficient to accommodate the portion of the load that has been shed by the first power supply module.
A multi-state switch and a converter employing the multi-state switch. The multi-state switch includes a transformer that comprises at least three primary windings (A1, B1, C1) and at least three secondary windings (A2, B2, C2) and a switch set. The identical terminal of each secondary winding of the transformer is connected with the different terminal of the adjacent secondary winding. The identical terminals of all primary windings of the transformer are connected with each other. The switch set includes a first bridge arm composed of a first switch (S1) and a fourth switch (S4) connected in series, a second bridge arm composed of a second switch (S2) and a fifth switch (S5) connected in series, and a third bridge arm composed of a third switch (S3) and a sixth switch (S6) connected in series. The first, the second and the third bridge arms are connected in parallel. The different terminal of the first primary winding (A1) of the transformer is connected between the first switch (S1) and the fourth switch (S4), the different terminal of the second primary winding (B1) is connected between the second switch (S2) and the fifth switch (S5), and the different terminal of the third primary winding (C1) is connected between the third switch (S3) and the sixth switch (S6).
A heat exchanger can have a manifold which includes a plurality of laminated sheets that allow a customization of the heat exchanger. The design can allow for a more optimal flow of coolant to areas of high load, thereby making the temperature distribution across the heat exchanger more uniform, or intentionally non-uniform. Furthermore, the laminated sheets can allow multiple circuits to be employed in the heat exchanger such that different coolants can be utilized therein and maintained separate from one another. The tubes can be microchannel tubes. A single set of manifolds can be used with multiple heat exchanger cores to provide a more compact heat exchanger. Mounting features can be integral with a group of the sheets.
F28F 1/02 - Tubular elements of cross-section which is non-circular
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
Existing measurements of an input component (such as voltage or current) in a three phase power supply system are decomposed into a negative sequence component. The negative sequence component, which is significantly higher when a rectifier fuse is blown, is compared to a threshold and a determination made that a rectifier fuse is blown when the negative component exceeds the threshold. In an aspect, an adaptive algorithm is used to make the detection work better in the range of the nominal frequency of the input voltage. In an aspect, the negative sequence is determined indirectly from the existing measurements.
H02M 1/32 - Means for protecting converters other than by automatic disconnection
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
53.
IMPROVED HUMIDITY CONTROL FOR MULTIPLE UNIT A/C SYSTEM INSTALLATIONS
An air conditioning (A/C) system that may have a plurality of air conditioning units disposed in different zones of an area that each operate to cool the different zones, a humidity sensor for sensing the humidity in the area, and a controller. The controller may be adapted to analyze a sensible heat load being experienced by each of the air conditioning units and to control a latent heat removal being performed by each air conditioning unit such that a percentage of latent heat removal performed by each air conditioning unit does not exceed a percentage of sensible heat removal being performed by each air conditioning unit.
F24F 3/00 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
54.
COMPUTER ROOM ENVIRONMENTAL CONDITIONING UNIT WITH TRANSLATABLE BLOWERS
A conditioning unit can allow the blower to be easily translated from a first operable position in the conditioning unit to a second operable position external to the conditioning unit. The translation of the blower does not require the disconnection of the blower and, accordingly, does not require that the blower be disconnected and reconnected to the control system. Such capability can facilitate the installation of the conditioning unit into a variety of applications and allows the purchaser to customize the blower location based on the desired performance. The ability to customize the installation of the conditioning unit without requiring disconnection and reconnection of the blower can reduce the cost and expense associated with the installation into differing applications.
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
F24F 3/00 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems
A wide input voltage power supply module includes a first power input terminal (108), a second power input terminal (110), a rectifier circuit, a rectifier and filter circuit (100), and a converter circuit (1). The converter circuit (1) is connected to the first and the second power input terminals (108, 110) through the rectifier circuit, and is connected to the output terminals of the power supply module through the rectifier and filter circuit (100). The converter circuit (1) includes a first converter (11) and a second converter (12). In the case of a low-voltage operation mode, the first converter (11) is connected in parallel with the second converter (12). In the case of a high-voltage operation mode, the first converter (11) is connected in series with the second converter (12).
H02M 7/217 - 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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
56.
CONTROL METHOD OF SOFT SWITCHING CIRCUIT IN SWITCHING POWER SUPPLY
H02M 7/537 - 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
57.
CONTROL METHOD OF SOFT SWITCHING CIRCUIT IN SWITCHING POWER SUPPLY
H02M 7/537 - 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
58.
METHOD AND APPARATUS FOR CONTROLLING A COOLING SYSTEM.
A vapor compression cooling system having a control unit adapted to receive working fluid pressure or temperature information to control a condenser cooling fluid control valve to minimize flow changes through the valve.
A cooling system is provided that comprises: a refrigerant loop having a pump; an evaporator heat exchanger thermally coupled to a heat source, the evaporator plumbed in the loop; a condensing heat exchanger and a receiver plumbed in the loop; and an equalizing conduit plumbed between an inlet to the condenser and the receiver and comprising a flow regulating valve.
A method of preventing condensation on equipment inside a temperature-controlled enclosure comprises measuring the temperature in at least one location inside the enclosure. The temperature inside the enclosure is compared with a safe temperature, at which the risk of condensation is reduced. The temperature inside the enclosure is increased until the safe temperature is achieved. A user is then notified that it is safe to access the enclosure.
A driver circuit for switches. The driver circuit includes two transformers (T1, T2), a drive signal input terminal, a high frequency carrier signal and a switch (QS). The secondary side of the first transformer (T1) is connected to a power supply circuit that provides a turn-on voltage to the switch (QS) when the drive signal is high, the secondary side of the second transformer (T2) is connected to a voltage release circuit that releases the turn-on voltage of the switch (QS) to a low level when the drive signal is low.
A parallel signal transmitting method of uninterrupted power supply is provided, in which serializing the parallel signal by using a logical processing unit firstly; then transmitting the parallel signal of respective node machine through a bus in synchronous.
A system of cooling and method of use that includes a connector (106) having a data reader capable of reading a wireless identifier and/or a breaker box (108) capable of routing liquid cooling to at least one server (100). In a preferred i embodiment, both the quick connector and the breaker box are used in conjunction with a liquid coolant such as refrigerant or water.
A heat exchanger core tube having a body with at least one internal fluid passage and having at least one end adapted such that an effective height results that is less than or equal to the inside diameter of a manifold and can allow the body of the core tube to have a height greater than the inside diameter of the manifold. The at least one adapted end may comprise an adapter and may be twisted such that the longitudinal axis of a core tube remains substantially normal to the longitudinal axis of the manifold and wherein the end of the core tube is angled less than 90 degrees with respect to the tube body.
The disclosure provides an efficient alternative energy uninterruptible power supply (UPS) system having a main first source of power coupled to an electrical load, comprising: a second source of power from stored energy coupled to the electrical load, the second source being adapted to supplement the first source and condition the power from the stored energy to predetermined conditions for the electrical load; an automatic transfer switch (ATS) coupled between the first source and the second source and adapted to control the first source coupling to the electrical load when the first source power is noncompliant with predetermined conditions for the electrical load; and a source of alternative energy coupled downstream of the ATS to the second source, the electrical load, or a combination thereof, wherein the source of alternative energy comprises a source of direct current (DC) power.
H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
H02J 9/04 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
66.
BATTERY TESTER WITH WIRELESS VOICE STATUS MESSAGES
Methods and systems are disclosed for providing wireless data transfer and voice messages in a voltage measurement device. In some embodiments, the methods and systems dynamically construct voice messages that substantially correspond to text messages displayed on a display of the measurement device. The voice messages may be assembled from words and phrases that have been prerecorded and stored in a voice module of the measurement device. A wireless communication module transmits the voice messages from the voice module to a wireless receiver that may be worn or carried by the operator.
An improved precision cooling system for high heat density applications comprises a heat exchanger (2) having more fluid outlet conduits (6a, 6b) than fluid inlet conduits (4) to optimize the pressure drop across the heat exchanger at a given fluid flow rate. The heat exchanger may be of microchannel or tube fin construction, and the cooling system may utilize single phase or multi-phase pumped or compressed fluids.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
68.
METHOD FOR PULSE WIDTH MODULATION SYNCHRONIZATION IN A PARALLEL UPS SYSTEM
A method for pulse width modulated pulse synchronization in a parallel UPS system uses the locally measured critical bus voltage to detect a zero crossing and adjust the PWM pulse to coincide with the zero crossing. No communication between the units is required to perform synchronizaton, and no 'master' and 'slave' relationship exists to thereby increase the total system reliability.
H02M 7/493 - 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 static converters being arranged for operation in parallel
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
69.
INTELLIGENT TRACK SYSTEM FOR MOUNTING ELECTRONIC EQUIPMENT
The present invention provides an intelligent track system generally mounted in a network, server, or telecom rack/enclosure rack rail that can sense the spaces, such as 'U' spaces, used by electronic equipment, shelving, or blanking panels and provide such information to a remote location. Information technology managers and other decision-makers can remotely view the actual available spaces and determine appropriate locations for installing additional equipment. Criteria can be based on actual available space and for some embodiments in conjunction with predictive or actual sensed temperatures proximate to the spaces, available cooling capacity, power loads, and available power capacity. In at least one embodiment, the intelligent mounting track system can include a plurality of sensors mounted along the rack surfaces that collectively or individually uniquely identify which spaces are occupied. The information can be communicated to an electronic processor with software to interpret the data and indicate space utilization.
A serial communications bus (62) is utilized to send key action data between parallel UPS units (12, 14). The communications bus (62) is used to transmit data at the zero crossing of the critical bus voltage. Each UPS unit (12, 14) then takes action based upon the event data received at the next zero crossing of the critical bus voltage.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 7/493 - 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 static converters being arranged for operation in parallel
71.
TRANSFER SWITCH SYSTEM WITH NEUTRAL CURRENT MANAGEMENT
An electrical power transfer system for selectively connecting a load to a first power source or a second power source includes a first switch having an input selectively connected to the first power source and an output connected to the load. A second switch includes an input and an output connected to the load. An isolation device has its input connected to the second power source and its output connected to the input of the second switch to provide a continuous neutral path for the second power source and to isolate a neutral current path of the load from the second power source.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
72.
METHOD AND APPARATUS FOR MONITORING AN ELECTRIC LOAD
Applicants have created an improved method and apparatus for remotely monitoring an electrical load and assessing key attributes of power-related anomalies and line disturbances caused or created by the electrical load and qualifying their conformity to certain expected steady state conditions. The apparatus includes an intelligent power distribution module that can include a power output section, a power input section, a communication section, and related circuitry. The intelligent power distribution module can further include a memory section, a sensing device, a processing device, and a switch. The method for monitoring an electrical load having a current and voltage requirement supplied by an electrical source coupled to the load generally includes: interfacing a sensing module between the load and the electrical source; sensing one or more characteristics of the load; and determining the performance of the load sensing.
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
G01R 35/00 - Testing or calibrating of apparatus covered by the other groups of this subclass
73.
MICROCHANNEL COOLING CONDENSER FOR PRECISION COOLING APPLICATIONS
The present disclosure provides a method, apparatus, and system for a centralized microchannel cooling system in precision cooling applications, such as mission-critical systems with data centers or cabinets or rooms with medical equipment. The microchannel condenser is designed to provide sufficient cooling for such applications by configuring multiple microchannel slabs together in a fashion that advantageously can increase the overall cooling abilities of multiple slabs not heretofore known. The system can provide a retrofit condenser for some existing precision cooling systems that have limitations on size, while satisfying cooling capacity requirements. The multiple slabs can be cooled by flowing a fluid such as air or a liquid across them. One or more microchannel slabs can be mounted horizontally, vertically, or in an inclined position. Further, the system can allow for multiple passes of refrigerants through the microchannel slabs.
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
74.
COOLING FLUID FLOW REGULATION AND DISTRIBUTION SYSTEM AND METHOD
The present disclosure provides systems and methods for regulating and distributing cooling fluid through a plurality of heat sinks, such as cold plates, using flow regulators, which set the total flow rate, in combination with one or more individual orifices that allow further flow distribution as required by individual cold plates, despite flow variations upstream of the orifices. An orifice can be coupled to an orifice holder, which includes a body to support the orifice, and which may be coupled (directly or indirectly) to an inlet of the cold plate. Generally, the flow regulator(s) is coupled with a plurality of orifices and conduits through which the cooling fluid flows. Related system components can be assembled as a module for installation into a cooling system that includes other system components such as a pump, compressor or other pressure sources for the cooling fluid.
A method of standardizing provided services by categorizing the provided services into one or more functional disciplines; establishing a plurality of service maturity levels for each functional discipline; establishing a plurality of service maturity criteria for each serve maturity level; assessing the service maturity level for each functional discipline according to the associated service maturity criteria; advancing to the next service maturity level when the assessment achieves a predetermined level of success.
The present invention is related to a method and apparatus for monitoring and controlling devices comprising connecting an external manager to a communication protocol, connecting a first device to the external manager, assigning an IP address to said first device publishing a second IP address from the first device, connecting a second device to said first device such that it obtains the said second IP address, publishing a third IP address from said second device.
The present invention is related to user managed power systems with security. The invention encompasses a method and system of managing a power system wherein a data center user determines whether there is a desire to control remote power supply socket assigned to the user's data module. The data center user is able to sign into the remote power supply through a security protocol. Then the data center user can gain control over the remote power supply socket assigned to the user's data module. Finally, this allows the data center user to remotely control the power supply socket assigned to the user's data module.
A centralized cooling system can selectively deliver individualized cooling to individual electrical load units. The system can provide direct cooling from a manifold of cooling outlets in a controlled manner based on the sensed electrical loads of particular load units. A branch monitoring system monitors the load on electrical feeds that are coupled to electrical load units. A controller is coupled to the branch monitoring system and provides output to control a cooling unit. At least one control valve is further coupled to the controller downstream of the cooling unit generally at each cooling outlet to control an amount of cooling fluid, such as air or liquid, directed to one or more of the units. If a load changes for a given unit, the controller can actuate a cooling valve coupled to a corresponding cooling outlet and alter the amount of cooling fluid flowing into or around the unit(s).
The present disclosure describes swivel hinge assemblies for use in rotatably mounting two structures together, such that the structures are in fluid communication by way of fluid flow, as well as systems including such hinge assemblies. The swivel hinge assemblies generally comprise a fluid inlet port, a fluid outlet port, shafts surrounding the inlet and outlet ports and allowing for rotation about one or more axes, and attachment means which may be integrally formed with the shafts of the hinge assembly. In use, these assemblies eliminate the use for secondary hinges or secondary mounting hardware in attaching a door and a structure together in order to maintain fluid communication between an electronics rack and a heat exchanger mounted on the door of an electronics rack.
A mounting system provides mechanisms and form factors for bringing a heat exchanger from a server rack into thermal contact with a heat exchanger from a electronics server. To ensure good thermal contact, pressure is applied between the two heat exchangers, the rejector plate and the chassis cold plate. The mounting mechanism used to engage and disengage the heat exchangers is configured to isolate the force applied to the two heat exchangers. The mounting mechanism includes an interlocking mechanism that prevents transfer of the applied force to the rest of the electronics server. Without isolating this force, the force is applied to the electronics server and/or the rack chassis, possibly disconnecting the electrical connections between the electronics server and the rack, as well as providing mechanical stress to the electronics server and the rack chassis. The mounting mechanism is also coupled to the electronics server locking mechanism such that the action of locking the electronics server into the rack causes the heat exchangers to engage in thermal contact. This is a fail safe procedure since no separate process is required to engage the electronics server cooling loop.
