Abstract

It is described a method of positioning a stator segment (101) of a multi-segment stator (110) of an electrical machine, the multi-segment stator (110) comprising a plurality of segments (101) and a shaft (103), the method comprising: mounting a stator segment (101) on the shaft (103) at a first segment position, mounting a plurality of actuators (201a, 201b, 202a, 202b) between the segment (101) and the shaft (103) for moving the segment (101) from said first segment position, detecting positions of a plurality of first reference objects (107a, 107b, 107c) attached to the stator segment (101) using a camera system (105); a plurality of second reference objects (111a, …, 111f) attached to the shaft (103) using a laser tracking system (109) and a plurality of third reference objects (113a, 113b) attached to the camera system (105) using the laser tracking system (109), determining a second segment position of the stator segment (101) based on the positions of the pluralities of first reference objects, the second reference objects and the third reference objects and actuating the plurality of actuators (201a, 201b, 202a, 202b) for moving the segment (101) from said first segment position to said second segment position.

IPC Classes  ?

• H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Abstract

It is disclosed a measurement and sorting arrangement for a plurality of magnets (36) for a rotor (30) of an electrical machine (10) the rotor (30) including a rotor house (31) and a plurality of permanent magnets (36). The arrangement includes: a measurement station for measuring at least a dimension of a magnet (36) along a direction which is subject to be aligned with a radial direction of the rotor (30), a storage for storing a plurality of magnets (36) based on the results of the step of measuring (120).

IPC Classes  ?

• H02K 1/2791 - Surface mounted magnetsInset magnets
• H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
• H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets

Abstract

It is described a method of measuring a geometric characteristic of a stator component (2) of an electrical machine (30), the method comprising: arranging an optical measurement device (5) at a predetermined position (6) relative to the stator component (2), in particular at a first side of the stator component; measuring, by the optical measurement device (5), positions of plural measurement locations (10a, 10b) being in predetermined spatial relations to plural stator component locations (23a, 23b) while keeping the position of the optical measurement device (5) and the stator segment (2) fixed; determining the geometric characteristic based on the measured positions of the plural measurement locations (10a, 10b).

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• G01B 11/27 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes for testing the alignment of axes
• H02K 1/2791 - Surface mounted magnetsInset magnets
• H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
• H02K 15/16 - Centring rotors within the stators
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Abstract

A method of aiding an assembly process of a rotor (30) of an electrical generator comprising: -arranging a rotor house (31) and a rotor bearing (32) at a first position; -arranging an optical measurement device (140) at a static position (141) relative to the rotor house (31) and the rotor bearing (32); -measuring a plural first distances (dla, dlb) between said measurement device (140) and a plural first locations (Ila, lib) in the rotor house; -determining a rotor house centre point (zh) at one axial position or an axis (Z) out of the plural first distances (dla, dlb); -measuring plural second distances (d2a, d2b) between said measurement device (140) and plural second locations (12a, 12b) at the rotor bearing (32); -determining a rotor bearing centre point (zb) at one axial position out of the plural second distances (d2a, d2b); -changing the positioning of rotor bearing (32) to rotor house (31) to minimize the distances of determined centre points (zb, zh) or of rotor house axis (Z) to the rotor bearing centre point (zb).

IPC Classes  ?

• H02K 15/16 - Centring rotors within the stators
• H02K 5/15 - Mounting arrangements for bearing-shields or end plates
• H02K 1/2791 - Surface mounted magnetsInset magnets
• H02K 7/08 - Structural association with bearings
• H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
• H02K 1/2786 - Outer rotors
• H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
• H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of 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

Abstract

An energy storage plant for storing energy is provided, which comprises two or more plant modules (10, 20). Each plant module (10, 20) comprises at least a heat source (11, 21) configured to provide heat to a heat transfer fluid; a thermal storage device (12, 22) configured to store thermal energy; a heat exchanger (13, 23) configured to receive heat via the heat transfer fluid and to provide heat to a working fluid of a heat consuming system (180); a charging flow path configured to transfer heat from the heat source (11, 21) to the thermal storage device (12, 22) via the heat transfer fluid; and a discharging flow path configured to transfer heat from the thermal storage device (12, 22) to the heat exchanger (13, 23) via the heat transfer fluid. The thermal storage device (12, 22), the charging flow path and the discharging flow path of each plant module (10, 20) are separate from the thermal storage device, the charging flow path and the discharging flow path of each of the other of said two or more plant modules (10, 20).

IPC Classes  ?

• F01K 3/12 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having two or more accumulators

Abstract

It is described a thermal energy storage assembly (190) comprising a first thermal energy storage device (110), a second thermal energy storage device (120) being fluidically coupled to the first thermal energy storage device (110) in parallel, and a flow control unit (130) configured for controlling a first flow of a heat transfer fluid through the first thermal energy storage device (110) and a second flow of the heat transfer fluid through the second thermal energy storage device (120), wherein in a charging mode the first flow of the heat transfer fluid is controllable by the flow control unit (130) in such a way that the first amount of thermal energy introduced in the first thermal energy storage device (110) is larger than the second amount of thermal energy introduced in the second thermal energy storage device (120), and wherein in a discharging mode the first flow of the heat transfer fluid is controllable by the flow control unit (130) in such a way that the first amount of thermal energy removed from the first thermal energy storage device (110) is larger than the second amount of thermal energy removed by the second thermal energy storage device (120). It is further described a system (100) for storing thermal energy comprising the thermal energy storage assembly (190) and a method for storing thermal energy in the thermal energy storage assembly (190).

IPC Classes  ?

• F28D 17/04 - Distributing arrangements for the heat-exchange media
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28F 27/02 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels

Abstract

It is described a heater flow path for a thermal energy storage system (100), the heater flow path comprising: a heater system (101) adapted to heat a heat transfer fluid; an on-off valve system (104); and a continuously adjustable valve system (105), wherein the on-off valve system and the continuously adjustable valve system are configured to adapt a throughput of the transfer fluid through the heater system and are arranged, according to a (intended) flow direction (106) of the transfer fluid, both upstream (107), both down stream (108) or one upstream and the other downstream of the heater system (101).

IPC Classes  ?

• F24D 11/00 - Central heating systems using heat accumulated in storage masses
• F24D 19/10 - Arrangement or mounting of control or safety devices
• F24H 1/00 - Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
• F24H 7/04 - Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
• F24H 9/20 - Arrangement or mounting of control or safety devices
• F24H 15/208 - Temperature of the air after heating
• F24H 15/238 - Flow rate
• F24H 15/31 - Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
• F24H 15/32 - Control of valves of switching valves

Abstract

The present invention describes a system (100, 200, 300, 400) for storing thermal energy. The system (100, 200, 300, 400) comprises a heating device (110) configured for heating a primary mass flow of a working fluid by an inconstant energy source, a thermal storage device (120) configured for storing thermal energy of the working fluid, a thermal transfer device (130) configured for transferring thermal energy of the working fluid to a thermal device, and being connected in parallel to the thermal storage device (120), and a heating device bypass line (140, 240, 340) arranged in such a way that a secondary mass flow of the working fluid bypasses the heating device (110). The heating device bypass line (140, 240, 340) comprises a dividing section (141, 241, 341) configured for dividing the working fluid into the primary mass flow and the secondary mass flow, and a merging section (142) configured for merging the primary mass flow with the secondary mass flow. The heating device bypass line (140, 240, 340) further comprises a control unit (143) for controlling the secondary mass flow such that the working fluid downstream of the merging section (142) comprises a predefined temperature, wherein the working fluid downstream of the merging section (142) is feedable to at least one of the thermal storage device (120) and the thermal transfer device (130). Furthermore, the present invention describes a method for operating the system (100, 200, 300, 400) for storing thermal energy.

IPC Classes  ?

• F24S 20/40 - Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
• F24S 60/30 - Arrangements for storing heat collected by solar heat collectors storing heat in liquids

Abstract

A thermal energy storage device (100) is provided. The ther mal energy storage device comprises a chamber (101) including storage material (102), which is configured to store thermal energy, and two or more ports (103, 104) configured to pass a flow (105) of heat transfer medium. The storage material is configured to exchange thermal energy with the heat transfer medium. The thermal energy storage device further comprises a cage structure (106) comprising one or more cages (107) that provide a boundary (110) between one of the ports and at least part of the storage material, wherein the cage struc ture comprises a filling material (108). Further, the cage structure is configured to be passable by the heat transfer medium.

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28D 17/00 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
• F28F 9/00 - CasingsHeader boxesAuxiliary supports for elementsAuxiliary members within casings
• F28F 9/02 - Header boxesEnd plates

Abstract

Provided is a method for configuring a thermal energy storage system including the following steps: Provided is a method for configuring a thermal energy storage system including the following steps: providing a thermal energy storage device for storing heat, Provided is a method for configuring a thermal energy storage system including the following steps: providing a thermal energy storage device for storing heat, providing a plurality of temperature sensors at different locations of the thermal energy storage device for measuring temperatures at the different locations, Provided is a method for configuring a thermal energy storage system including the following steps: providing a thermal energy storage device for storing heat, providing a plurality of temperature sensors at different locations of the thermal energy storage device for measuring temperatures at the different locations, providing a control device of the thermal energy storage system for reading measurement data of the plurality of temperature sensors, Provided is a method for configuring a thermal energy storage system including the following steps: providing a thermal energy storage device for storing heat, providing a plurality of temperature sensors at different locations of the thermal energy storage device for measuring temperatures at the different locations, providing a control device of the thermal energy storage system for reading measurement data of the plurality of temperature sensors, generating a numerical model for at least one first temperature sensor of the plurality of temperature sensors based on the measured temperatures of the plurality of temperature sensors means of machine learning, and Provided is a method for configuring a thermal energy storage system including the following steps: providing a thermal energy storage device for storing heat, providing a plurality of temperature sensors at different locations of the thermal energy storage device for measuring temperatures at the different locations, providing a control device of the thermal energy storage system for reading measurement data of the plurality of temperature sensors, generating a numerical model for at least one first temperature sensor of the plurality of temperature sensors based on the measured temperatures of the plurality of temperature sensors means of machine learning, and storing the numerical model by a control device, for configuring the thermal energy storage system, Provided is a method for configuring a thermal energy storage system including the following steps: providing a thermal energy storage device for storing heat, providing a plurality of temperature sensors at different locations of the thermal energy storage device for measuring temperatures at the different locations, providing a control device of the thermal energy storage system for reading measurement data of the plurality of temperature sensors, generating a numerical model for at least one first temperature sensor of the plurality of temperature sensors based on the measured temperatures of the plurality of temperature sensors means of machine learning, and storing the numerical model by a control device, for configuring the thermal energy storage system, Furthermore, a thermal energy storage system and a method for operating a thermal energy storage system is also provided.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring
• 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

Abstract

The present invention relates to a heat storage device, comprising a storage wall (101) at least partially surrounding an inner storage volume (Vi) of the heat storage device, an insulation layer (102) arranged at an inner surface of the storage wall (101) facing to the inner storage volume (Vi), a load cell element (103) for measuring forces acting from the inner storage volume (Vi) against the storage wall (101), and an insulation element (104). The insulation layer (102) comprises a cut-out section in which the insulation element (104) is movably inserted in such a manner that the insulation element (104) is movable with respect to the insulation layer (102) upon acting of forces from the inner storage volume (Vi) against the insulation element (104). The load cell element (103) is coupled to the insulation element (104) in such a manner that forces acting from the inner storage volume (Vi) against the insulation element (104) are transferrable to the load cell element (103).

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28F 27/00 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
• G01L 7/00 - Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements

Abstract

The present invention relates to a system (100) for storing heat energy comprising a fluid cycle (101) through which working fluid is streamable, and a heat storage device (110) configured for storing heat energy, wherein the heat storage device (110) comprises a first fluid opening (111) and a second fluid opening (112) each being coupled to the fluid cycle (101) such that the working fluid is streamable between the first fluid opening (111) and the second fluid opening (112) through heat storage device (110) transferring thermal energy between the heat storage device (110) and the working fluid. The system (100) further comprises a mass regulation device (120) which is coupled to the fluid cycle (101), wherein the mass regulation device (120) is configured for adjusting the mass of the working fluid in the fluid cycle (101) on the basis of the pressure and/or the temperature of the working fluid. A mass regulation device (120) is coupled to the fluid cycle (101), wherein the mass regulation device (120) is configured for adjusting the mass of the working fluid in the fluid cycle (101) on the basis of the pressure and/or the temperature of the working fluid, and wherein the mass regulation device (120) comprises a pressure control valve (124) for adjusting the pressure difference between fluid cycle (101) and the surrounding system, thereby adjusting the absolute pressure in the fluid cycle and thereby exhausting and/or feeding mass of working fluid out of or into the fluid cycle (101).

IPC Classes  ?

• F01K 3/00 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
• F01K 3/14 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having both steam accumulator and heater, e.g. superheating accumulator

Abstract

Heat Recovery Steam Generator with mass flow adaption The present invention relates to a device (100) for heat re- covery of a thermal system (300) comprising a heat energy storage unit (305) for storing heat energy. The device (100) comprises a feeding line (106) through which a first fluid (107) of the thermal system (300) is streamable, wherein the first fluid (107) streams along a first streaming direction, a first thermal unit (101) for transforming a state of a sec- ond fluid (105) by thermal energy from the first fluid (107) and a second thermal unit (102) which is arranged adjacent to the first thermal unit (101) with respect to the first streaming direction of the first fluid. The second thermal unit (102) is configured for receiving the second fluid (105), wherein the second thermal unit (102) is adapted for transforming a further state of the second fluid (105) by thermal energy from the first fluid (107) and wherein the first thermal unit (101) and/or the second thermal unit (102) are installed at least partially in a thermal transfer sec- tion (108) in the feeding line (106). In the thermal transfer section (108) thermal energy is transferrable from the first fluid (107) to the second fluid (105). The device (100) fur- ther comprises a bleed section (110) coupled to the feeding line (106) at the thermal transfer section (108) for bleeding off a part of the first fluid (107) out of the feeding line (106), wherein the bleed section (110) is arranged in the thermal transfer section (108) where a temperature difference between the first fluid (105) and the second fluid (107) is minimized.

IPC Classes  ?

• F01K 3/18 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters

Abstract

A thermal energy storage plant (10) comprising; a fluid transporting machine (110) for generating a flow of a working fluid, a heating device (120), a thermal energy storage (130), a first flow path (141) from a source (151) of the working fluid to an insertion point (111), the first flow path (141) including a first thermal exchange path (141a) along which the temperature of the working fluid is raised from an initial temperature (T0) to a first temperature (T1), a second flow path (142) from an extraction point (112) to a waste (152), the second flow path (142) including a second thermal exchange path (142a) along which the temperature of the working fluid is lowered from a second temperature (T2) higher than the first temperature (T1) to a final temperature (T3), the first thermal exchange path (141a) and the second thermal exchange path (142a) being in thermal contact with each other.

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

A thermal energy storage system (2) is provided. The thermal energy storage system comprises an energy storage device (4) configured to store thermal energy; a charging flow path (16) configured to provide thermal energy from a heat source (6) to the energy storage device (4) via a heat transfer medium, wherein the thermal energy storage system (2) is operable in a charging mode in which the heat transfer medium is transported along the charging flow path (16); and a discharging flow path (14) configured to provide thermal energy from the energy storage device (4) to a first heat consumer (12) via the heat transfer medium and to return the heat transfer medium at least partially to the energy storage device (4). The thermal energy storage system (2) is operable in a discharging mode in which the heat transfer medium is transported along the discharging flow path (14). The thermal energy storage system (2) further includes a second heat consumer (10) arranged in the charging flow path (16) and in the discharging flow path (14) such that the heat transfer medium passes through the second heat consumer (10) both during operation in the charging mode and during operation in the discharging mode.

IPC Classes  ?

• F01K 3/18 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters

Abstract

A thermal energy storage system is provided. The system comprises an energy storage device (20) configured to store thermal energy, a charging flow path (41) configured to guide a heat transfer medium from a heat source (30) to the energy storage device (20) in order to transfer thermal energy from the heat source (30) to the energy storage device (20), and a discharging flow path (42) configured to guide the heat transfer medium from the energy storage device (20) to a heat consumer (50) in order to transfer thermal energy from the energy storage device (20) to the heat consumer (50). A blower (11) of the system (10) is configured to convey the heat transfer medium in the charging flow path (41) and/or the discharging flow path (42). The thermal energy storage system (10) further comprises a blower driving turbine (60) a rotational output of which is coupled to the blower (11) to provide rotational mechanical energy to the blower (11) so as to drive the blower (11).

IPC Classes  ?

• F01K 3/18 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters

Abstract

An energy distribution system that comprises an energy storage device (20) configured to store thermal energy is provided. The system includes a charging flow path (30) configured to guide a heat transfer medium from a heat source (31) to the energy storage device (20) in order to transfer thermal energy from the heat source (31) to the energy storage device (20) to increase the amount of thermal energy stored in the energy storage device (20), and a discharging flow path (40) configured to guide the heat transfer medium from the energy storage device (20) to heat consumers (51, 52) in order to transfer thermal energy from the energy storage device (20) to the heat consumers (51, 52). The discharging flow path (40) comprises at least one distribution flow path (41) that includes at least a common flow line (45), a first outlet port (71) on the common flow line, the first outlet port (71) being configured to provide the heat transfer medium to a first heat consumer (51), and a second outlet port (72) on the common flow line, the second outlet port (72) being configured to provide the heat transfer medium to a second heat consumer (52).

IPC Classes  ?

• F01K 3/18 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters

Abstract

Repair system (1) for performing at least one repair task in at least one wind turbine (2), in particular the nacelle (5), the repair system (1) comprising: - a controllable robotic repair device (15) installed in the wind turbine (2), in particular the nacelle (5), - an operating device for remotely operating the robotic repair device (15), which comprises a control device (23) and virtual reality equipment (3) providing a virtual reality environment of the interior of the wind turbine, in particular the nacelle (5), for at least one human service user provided remote to the wind turbine (2), - wherein the control device (23) of the operating device is adapted to remotely control the robotic repair device (15) according to user input commands provided via the virtual reality equipment (3).

IPC Classes  ?

• F03D 80/50 - Maintenance or repair

Abstract

Method for increasing the energy output of an already installed solar power plant, solar power plant retrofitting system and solar power plant Method for increasing the energy output of an already installed solar power plant (1) comprising at least one first solar panel (2), which is absorbing sunlight in a first frequency band, characterized in that a semi-transparent second solar panel (14, 15), which absorbs light in a second frequency band, is mounted on top of at least one of the at least one first solar panel (2) and connected to a power electronics device (8) of the solar power plant (1) comprising at least one solar inverter (9), wherein the first and second frequency bands do not or only partially overlap such that the second solar panel (14, 15) allows at least a part of the light of the first frequency band to pass.

IPC Classes  ?

• H02S 50/00 - Monitoring or testing of PV systems, e.g. load balancing or fault identification
• H01L 25/04 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers

Abstract

A method for determination of blade is provided. An image of a wind turbine containing at least a part of one or more blades of the wind turbine is received by an interface of a computer system. The image has a given original number of pixels in height and width. The image is analyzed to determine an outline of the blades in the image. A modified image is created from the analyzed image containing image information of the blades only. Finally, the modified image is analyzed to determine a blade defect and/or a blade defect type of the blades. As a result, the blade defects and/or blade defect types are output by a processing unit.

IPC Classes  ?

• G06T 7/00 - Image analysis
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 80/50 - Maintenance or repair
• G06N 3/08 - Learning methods

Abstract

The present invention relates to a heat accumulator (1) comprising a heat exchange chamber (2) having a first opening (3) configured to pass through a working fluid and a second opening (5) configured to pass through a working fluid, and a plurality of heat storage elements (4) filled in the heat ex- change chamber (2). At least one cord (6) extends between the heat storage elements (4). The present invention also relates to an apparatus and a method of forming a heat accumulator (1).

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

A thermal energy storage (100) for a thermal energy storage plant comprising a hollow housing (110) a granular material (120) for storing heat housed in the hollow housing (110). At least a storage grate (20) retains the granular material (120) inside the hollow housing (110), the storage grate (20) extending between a first end (11) and a second end (12), the first end (11) being closer to the bottom side (114) than to the top side (113), the storage grate (20) including at least a first grate section (20a) including the first end (11) and a second grate section (20b) including the second end (12), each grate section (20a, 20b) of the storage grate (20) comprises at least a first plurality of struts (51, 41, 42), the struts (51, 41, 42) being configured and arranged in each grate section (20a, 20b) in such a way that the mechanical strength of the first grate section (20a) is higher than the mechanical strength of the second grate section (20b).

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

A heat storage (100) for a thermal energy storage plant comprises: a hollow housing (110) comprising at least one housing wall (112) and at least two openings (101, 102) respectively defining an inlet and an outlet of the hollow housing (110), a granular material (120) for storing heat housed in the hollow housing (110) between the inlet (101) and the outlet (102), the hollow housing (110) defining a fluid passage (32) for the circulation of a heat transporting fluid between the at least two openings (101, 102) and through the granular material (120). At least one of said openings (101, 102) is provided with a storage grate (11) for retaining the granular material (120) inside the hollow housing (110), the storage grate (11) including at least a first grate segment (11a, 11b) which is inclined or curved towards the granular material (120).

IPC Classes  ?

• F28F 19/01 - Preventing the formation of deposits or corrosion, e.g. by using filters by using means for separating solid materials from heat-exchange fluids, e.g. filters
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

A system is provided that comprises a combined heat and power (CHP) plant (20) that is operable to generate electrical power and to provide a source of heat, wherein the CHP plant (20) is configured to supply heat to a heat consumer (40). The system further includes an energy storage system (30) storing energy in the form of thermal energy, wherein the energy storage system (30) is configured to supply heat to said heat consumer (40). The energy storage system (30) comprises an energy storage device (31) configured to store thermal energy, and a heat exchanger (32) configured to supply heat towards said heat consumer (40). The energy storage system (30) is configured to be operable at least in a charging mode in which a working fluid transfers heat from a heat source (33) to the energy storage device (31) to charge the energy storage device (31) and in a discharging mode in which the working fluid transfers heat from the energy storage device (31) to the heat exchanger (32).

IPC Classes  ?

• F01K 3/18 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters

Abstract

Thermal power station and method for generating electric power in a thermal power station The invention relates to a thermal power station (1) comprising (a) at least one thermal energy storage (10) having a housing (11), a storage chamber (12) with heat storage material (13) inside the storage chamber (12) and a fluid inlet port (14) fluidically connected to the storage chamber (12) and a fluid outlet port (16) fluidically connected to the storage chamber (12), and (b) a Brayton cycle heat engine (20) comprising a gas turbine (21), a cooler (23) and a compressor (24) connected with each other by means of a closed cycle (26) containing a second working fluid (B), whereby (c) the Brayton cycle heat engine (20) further comprises a control unit arranged for operating the Brayton cycle heat engine (20) according to a Brayton cycle, (d) the gas turbine (21) is thermally coupled to the at least one thermal energy storage (10) by means of a first heat exchanger (25) and a first working fluid (A), the first working fluid (A) being different from the second working fluid (B), and (e) the gas turbine (21) is connected to a generator (30) for producing electrical power by means of the thermal energy from the thermal energy storage (10). The invention further relates to a method for generating electric power in a thermal power station (1).

IPC Classes  ?

• F02C 1/10 - Closed cycles
• F02C 6/14 - Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
• F02C 1/00 - Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid
• F03G 6/06 - Devices for producing mechanical power from solar energy with solar energy concentrating means
• F24S 60/10 - Arrangements for storing heat collected by solar heat collectors using latent heat

Abstract

An energy transmission system for a power generation plant is provided. The energy transmission system (100) comprises plural distributed power generation devices (20) and a flow battery system that includes plural charging stacks (110) including electrochemical flow cells (180), wherein each charging stack (110) is associated with one or a group of the power generation devices (20) of the power generation plant (10) and wherein each charging stack (110) is configured to receive electrical energy produced by the associated power generation device or group of power generation devices (20) and to energize an electrolyte of the flow battery system by means of the received electrical energy; a central storage unit (120) configured to store the electrolyte of the flow battery system; a discharging stack (130) including electrochemical flow cells (180), wherein the discharging stack (130) is configured to extract electrical energy from the electrolyte and to provide the electrical energy to a power grid (50); and first and second sets of flow conduits. A wind farm including wind turbines and comprising such energy transmission system is further provided.

IPC Classes  ?

• H01M 8/04186 - Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
• H01M 8/04082 - Arrangements for control of reactant parameters, e.g. pressure or concentration
• H01M 8/08 - Fuel cells with aqueous electrolytes
• H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• H02J 15/00 - Systems for storing electric energy
• H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks

Abstract

Methods for configuring and operating a thermal energy storage system and thermal energy storage system The invention is related to a method for configuring a thermal energy storage system (1), comprising the following steps: - providing a thermal energy storage device (2) for storing heat, - providing a plurality of temperature sensors (3) at different locations of the thermal energy storage device (2) for measuring temperatures at the different locations, - providing a control device (4) of the thermal energy storage system (1) for reading measurement data of the plurality of temperature sensors (3), - generating a numerical model for at least one first temperature sensor (3) of the plurality of temperature sensors (3) based on the measured temperatures of the plurality of temperature sensors (3) by means of machine learning, and - storing the numerical model by a control device, preferably the control device (4), for configuring the thermal energy storage system (1). Furthermore, the invention is related to a thermal energy storage system (1) and a method for operating a thermal energy storage system (1).

IPC Classes  ?

• G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric

Abstract

There is described a thermal energy storage comprising a housing (10) having a fluid inlet (12) and a fluid outlet (18), and a thermal energy storage structure (20) arranged within the housing (10) between the fluid inlet (12) and the fluid outlet (18), the thermal energy storage structure (20) comprising thermal energy storage elements and flexible separator elements (22), the flexible separator elements (22) being arranged such that the thermal energy storage elements are separated into layers (24), each layer (24) forming a channel between the fluid inlet (12) and the fluid outlet (18). Furthermore, a method of manufacturing a thermal energy storage and a power plant for producing electrical energy are described.

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

A heat storage (100) for a thermal energy storage plant (10) comprises: a hollow housing (170) comprising an inlet (101) and an outlet (102), a granular material (160) for storing heat housed in the hollow housing (170) between the inlet (101) and the outlet (102), the hollow housing (170) defining a fluid passage for the circulation of a heat transporting fluid between the inlet (101) and the outlet (102) and through the granular material (160). The granular material (160) subject to the gravity force forms at least one free surface (161, 162) respectively facing the inlet (101) or the outlet (102) the at least one free surface (161, 162) including a border (A, B) in contact with the hollow housing (170) and being inclined with respect to the gravity direction, the respective inlet (101) or outlet (102) being with respect to the gravity direction at a higher level than a lowest point (A) of the at least one free surface (161, 162).

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28D 17/00 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles

Abstract

The invention relates to a hydrogen production system (1) comprising a thermal energy storage (10) having a housing (11), a storage chamber (12) with heat storage material (13) inside the storage chamber (12) and a fluid inlet port (14) fluidically connected to the storage chamber (12) and a fluid outlet port (16) fluidically connected to the storage chamber (12), and at least one high temperature electrolyser (20) for producing hydrogen (D), whereby the at least one high temperature electrolyser (20) is thermally connected to the heat storage material (13) of the storage chamber (12) of the thermal energy storage (10). Several modes of operation are defined. The invention further relates to a method for producing hydrogen (D) in the hydrogen production system (1).

IPC Classes  ?

• C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F01K 23/18 - Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids characterised by adaptation for specific use
• H01M 8/0656 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
• F01K 23/10 - Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle

Abstract

Effective charging process of an energy conversion system It is described an arrangement for storing heat energy and in particular providing electric energy from heat energy, the arrangement comprising: a storage (3) for storing heat energy having a charging inlet (5) and a charging outlet (7); a tank (9) for holding water for a steam generator (11), in particular heat recovery steam generator, the tank (9) having an inlet (13) and an outlet (15), a storage-steam-generator pipe (17) between the charging outlet (7) of the storage (3) and the inlet (19) of a heat recovery steam generator (11); a storage-steam-generator valve (25, V4) within the storage- steam-generator pipe (17), in particular within a first portion (27) of the storage-steam-generator pipe allowing to temporarily open the storage-steam-generator pipe (17).

IPC Classes  ?

• F01K 3/18 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
• F22B 1/02 - Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
• F01K 13/02 - Controlling, e.g. stopping or starting

Abstract

It is described an arrangement (100) for receiving and/or releasing, in particular storing, thermal energy, comprising: a container (101) for holding storage material (103), the container having a first fluid port (105) and a second fluid port (107) for allowing inflow and outflow of fluid (109) flowing through the container in a substantially horizontal flow direction (111, 112) for charging and/or discharging the storage material (103); at least two first valves (V1b, V1d) at different vertical positions for the first fluid port (105); at least two second valves (V2b, V2d) at different vertical positions for the second fluid port (107); and at least two temperature sensors (T1b, T1d) arranged within the container (101) at different vertical positions, in particular in one plane (P1) perpendicular to the flow direction.

IPC Classes  ?

• F28D 17/04 - Distributing arrangements for the heat-exchange media
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28D 20/02 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or using latent heat

Abstract

An arrangement for storing thermal energy, which has a three-dimensionally configured heat accumulator is provided. The latter contains a solid natural material for heat storage. The heat-storage material is enclosed by a fluid-impermeable, flexible layer such that the heat-storage material is insulated at least in a pressure-tight manner with regard to the environment of the heat accumulator. A flexible cover layer is provided, which is coupled to the fluid-impermeable flexible layer such that the flexible cover layer applies a surface force to the fluid-impermeable flexible layer. As a result, the fluid-impermeable flexible layer is pressed areally onto the heat-storage material. The flexible cover layer (i) has the form of a mesh or (ii) is configured in the form of sheet-metal plates overlapping one another in an imbricated manner.

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

The present invention relates to a heat accumulator (1) comprising a heat exchange chamber (2) having a lower portion and an upper portion and being configured to accommodate therein heat storage elements for storing thermal energy, wherein the heat exchange chamber (2) comprises an inlet (3) which is configured to supply a working fluid into the heat exchange chamber (2). A passively controlled first pressure loss regulating device (4) is arranged within the flow of the working fluid in the heat exchange chamber (2) and configured to pass the working fluid through, wherein the first pressure loss regulating device (4) is configured to form a first flow resistance for a flow of the working fluid in the first pressure loss regulating device (4) being different to a flow resistance for a flow of the working fluid in the heat exchange chamber (2) adjacent and outside the first pressure loss regulating device (4).

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

A thermal energy storage device (100) comprising a passage for the circulation of a heat transporting fluid between a hot end (101) and a cold end (102), the hot end (101) being configured for storing thermal energy at a first temperature (T1), the cold end (102) being configured for storing thermal energy at a second temperature (T2) lower than the first temperature (T1). The thermal energy storage device (100) comprises a heating device (120) at the hot end (101).

IPC Classes  ?

• F01K 3/00 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein

Goods & Services

Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus and instruments for accumulating and storing electricity (energy stores); Electric monitoring, control, regulating and switching apparatus; electronic switch gears, Inverter units, Electricity transformers; Energy accumulators and systems consisting thereof; Storage batteries; Electronic instruments and apparatus for data capture and control; Data processing programs; Data processing apparatus and computers, including peripheral devices therefor; The aforesaid goods being for data communications via cable and wireless telecommunications networks, for remote data transmission and for data transmission on local networks. Thermal energy accumulators. Assembly, maintenance and repair of installations, devices and apparatus in the field of energy storage, in particular thermal energy storage. Technical planning, research and technical development of installations, devices and apparatus, in particular in the field of energy storage; Scientific and technological services and research and design related thereto, in particular in the field of energy storage; Industrial analysis and research services; Design and development of computer hardware and software; Technical project management in the field of electronic data processing; Services of an EDP programmer; Maintenance and installation of software.

Abstract

A computer-implemented method for determination of blade- defects is automatically carried out by a computing system (CS). In step S1), an image (01) of a wind turbine containing at least a part of one or more blades of the wind turbine is received by an interface (IF) of the computer system (CS). The image has a given original number of pixels in height and width. A step S2) basically consists of two consecutive steps S2a) and S2b) which are executed by a processing unit (PU )of the computer system (CS). In step S2a), the image (01) is analyzed to determine an outline of the blades in the image. In step S2b) a modified image (AI) is created from the analyzed image (01) containing image information of the blades only. Finally, step S3) consists of analyzing, by the processing unit (PU), the modified image (AI) to determine a blade defect (BD) and/or a blade defect type (BDT) of the blades. As a result, the blade defects (BD) and/or blade defect types (BDT) are output by the processing unit (PU).

IPC Classes  ?

• G06T 7/00 - Image analysis
• F03D 80/50 - Maintenance or repair

Abstract

It is described a method of controlling wind turbine converters (117, 119, 121) of wind turbines (101, 102, 103) parallel connected at a point of common coupling (111), the method comprising: generating for each converter within a same length of a pulse width modulation period a pulse (127, 131, 136), wherein the pulses start for different converters at different pulse start phases (126, 133, 137), wherein pulse start phase differences (D12, D23) of the pulse start phases between at least two of adjacent converters (117, 119; 119, 121) are unequal.

IPC Classes  ?

• H02M 1/12 - Arrangements for reducing harmonics from AC input or output
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• 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 3/01 - Arrangements for reducing harmonics or ripples

Goods & Services

Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus and instruments for accumulating and storing electricity (energy stores); Electric monitoring, control, regulating and switching apparatus; electronic switch gears, Inverter units, Electricity transformers; Energy accumulators and systems consisting thereof; Storage batteries; Electronic instruments and apparatus for data collection and control of thermal installations; Thermal energy accumulators. Assembly, maintenance and repair of installations, devices and apparatus in the field of energy storage, in particular thermal energy storage. Technical planning, research and technical development of installations, devices and apparatus, in particular in the field of energy storage; Scientific and technological services and research and design relating thereto in the field of energy storage; Industrial analysis and research services.

Goods & Services

Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus and instruments for accumulating and storing electricity (energy stores); Electric monitoring, control, regulating and switching apparatus; electronic switch gears, Inverter units, Electricity transformers; Energy accumulators and systems consisting thereof; Storage batteries; Electronic instruments and apparatus for data collection and control of thermal installations; Thermal energy accumulators. Assembly, maintenance and repair of installations, devices and apparatus in the field of energy storage, in particular thermal energy storage. Technical planning, research and technical development of installations, devices and apparatus, in particular in the field of energy storage; Scientific and technological services and research and design relating thereto in the field of energy storage; Industrial analysis and research services in the field of energy storage.

Goods & Services

Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus and instruments for accumulating and storing electricity (energy stores); Electric monitoring, control, regulating and switching apparatus; electronic switch gears, Inverter units, Electricity transformers; Energy accumulators and systems consisting thereof; Storage batteries; Electronic instruments and apparatus for data collection and control of thermal installations; Thermal energy accumulators. Assembly, maintenance and repair of installations, devices and apparatus in the field of energy storage, In particular thermal energy accumulators. Technical planning, research and technical development of installations, devices and apparatus, in particular in the field of energy storage; Scientific and technological services and research and design related thereto, in particular in the field of energy storage; Industrial analysis and research services; Design and development of computer hardware and software, not relating to data protection software; Technical project management in the field of electronic data processing; Maintenance and installation of software, not relating to data protection software.