Apparatus for cooling an electric machine

Provided is an apparatus, for example, for use with a rotating electric machine, that includes a housing. The housing can include a housing main portion and a housing end portion. The housing main portion can be configured to be disposed proximal to a body portion of a stator section of an electric machine. The housing main portion can define a main fluid channel that is configured to conduct fluid therethrough. The housing end portion can receive fluid from said main fluid channel and direct fluid into contact with a winding end portion of a conductive winding of the stator section.

System and method for increasing airflow in electric machines

An air-cooled electric machine, such as an alternating current motor, having a housing containing a rotating shaft and a housing airflow cooling path has cooling vents on the housing periphery. An external cooling system having a duct enclosure is coupled to the housing exterior, and defines a duct airflow cooling path that is in communication with the housing airflow cooling vent and housing airflow cooling path. A duct fan within the duct enclosure external the housing is coupled to and driven by the shaft. The duct fan circulates air at above ambient pressure into the housing airflow cooling path.

Cooling System For An Electrical Machine

A cooling system for an electrical machine includes a substantially closed housing, a first heat exchanger arranged inside of the housing, a second heat exchanger arranged outside of the housing, a conduit assembly for transferring a heat exchange medium in a closed circuit between the first and the second heat exchangers, a first air circulating means configured to circulate air inside of the housing over the first heat exchanger, and a second air circulating means configured to circulate air outside of the housing over the second heat exchanger, wherein the conduit assembly includes a pump for actively circulating the heat exchange medium between the first and the second heat exchangers.

Superconducting machines

A machine such as a ship's engine has a superconducting component 15 requiring cooling for its operation, and includes a cooling system 40 . The cooling system is operable in first and second modes. In a cool-down phase the cooling system is run in the first mode providing relatively high heat transfer from the superconducting component. On attainment of a desired operating temperature the cooling system is run in the second mode, providing lower heat transfer. This enables a reduced cool-down time of the machine, while allowing economical operation in normal service. The higher level of cooling in the first mode used during the start-up procedure can involve a colder cryogen, or a greater flow of coolant. One way of achieving the latter is to circulate the coolant in normally evacuated regions 16 during the cool-down phase, and then re-establishing the vacuum in these regions for normal service operation.

Motor unit

The invention relates to a motor unit ( 5 ) comprising a motor ( 1 ), a heat exchanger ( 2 ) and an inverter ( 3 ) for the motor ( 1 ). In order to provide a compact, low-cost motor unit it is proposed that the heat exchanger ( 2 ) is embodied for cooling both the motor ( 1 ) and the inverter ( 3 ).

Internal thermal management for motor driven machinery

A motor driven assembly includes a motor having a motor inlet and a motor outlet, a shaft, and a rotor spaced radially outwards from the shaft. A cooling flow passage is located between the shaft and the rotor. The cooling flow passage fluidly connects the motor inlet and the motor outlet. A compressor is in fluid communication with the motor outlet. The compressor includes a compressor outlet that is in fluid communication with the motor inlet.

COOLING ARRANGEMENT USING AN ELECTROCHEMICAL CELL

An example generator cooling arrangement includes an electrochemical hydrogen pump configured to receive and adjust a fluid containing hydrogen and to provide a refined supply of hydrogen. An electric power generator receives the supply of hydrogen. The refined supply of hydrogen is used to remove thermal energy from the electric power generator. 1. A generator cooling arrangement , comprising:an electrochemical hydrogen pump configured to receive and adjust a fluid containing hydrogen, and to provide a refined supply of hydrogen; andan electric power generator that receives the supply of hydrogen, wherein the refined supply of hydrogen is used to remove thermal energy from the electric power generator.2. The generator cooling arrangement of claim 1 , wherein the electrochemical hydrogen pump is configured to adjust the fluid by increasing the hydrogen concentration in the provided claim 1 , refined supply of hydrogen relative to the received fluid containing hydrogen.3. The generator cooling arrangement of claim 2 , wherein the refined supply of hydrogen comprises hydrogen purified from the flow of fluid.4. The generator cooling arrangement of claim 1 , wherein the electrochemical hydrogen pump is configured to adjust the fluid by changing the pressure the fluid.5. The generator cooling arrangement of claim 1 , wherein the refined supply of hydrogen comprises at least some of the fluid.6. The generator cooling arrangement of claim 1 , wherein the electric power generator is configured to generate more than 150 megawatts of electric power.7. The generator cooling arrangement of claim 1 , wherein the electric power generator comprises windings and the refined supply of hydrogen removes thermal energy from the windings.8. The generator cooling arrangement of claim 1 , wherein the electrochemical hydrogen pump is configured to receive the fluid from the electric power generator.9. The generator cooling arrangement of claim 1 , wherein the electrochemical hydrogen pump ...

DIRECT-DRIVE SUPERCONDUCTING SYNCHRONOUS GENERATOR FOR A WIND TURBINE

The invention refers to a direct drive electric generator for a wind turbine provided with rotor salient poles and a ladder-like cryostat for housing superconductive coils and keeping them at a cryogenic temperature while the interior of the cryostat is kept free of coolant. 1315891112111289. A direct-drive electric generator with superconducting coils for a wind turbine , the generator () comprising p a stator assembly ( , , , , ) comprising air-gap stator windings () , an air-gap windings frame () , an annular stator back yoke () and a stator frame ();{'b': 2', '6', '7', '14', '5', '8', '9', '11', '12, 'a rotor assembly (, , , ) rotatable within the stator assembly(, , , , );'}{'b': 24', '2', '6', '7', '14, 'a plurality of superconducting coils () positioned on the rotor assembly (, , , );'}{'b': 15', '16', '17', '18', '15', '16', '17', '18', '24', '18', '17', '18, 'a cooling system (, , , ) comprising a compressor (), a feedthrough (), transmission lines () and cryocooler cold-heads () for cooling the superconducting coils () down to a suitable cryogenic temperature; the cold heads () being connected through the lines () to the compressor such that coolant can be delivered and recovered from the cold heads ();'}{'b': '10', 'and a cryostat ();'}wherein{'b': 7', '6, 'the rotor assembly comprises a back iron () with there-from protruding iron poles (),'}{'b': 10', '7', '24', '24, 'the cryostat (), is adapted to rotate synchronously with the rotor and is positioned on the outer surface of the rotor back iron (); houses the superconducting coils () for optimal thermal insulation of the same (); and has a round-ladder like geometry comprising a plurality of central openings adapted to host the protruding rotor iron poles,'}{'b': 10', '18', '45', '46, 'the cryostat () is free of cooling fluid and is adapted to keep the cryogenic temperatures by means of connections to the plurality of cold heads () through heat transmission circuits (, ).'}21818181810ba. The electric ...

ELECTRIC MACHINE

An electric machine includes a housing which accommodates a stator and a rotor rotationally supported about an axis of rotation, and has a front/rear air inlet opening on a top face and an air outlet opening therebetween. A front/rear air conveying element draws into the air inlet openings air which is discharged from the air outlet opening during operation. A cooler is mounted on the top face of the housing, covering the air inlet openings and the air outlet opening in a hood-like manner, such that discharged air is fed back to the air inlet openings. The cooler has a front/rear partition arranged between the air outlet opening and the corresponding air inlet opening and extending upward from the top face. Air guiding elements are arranged in the housing and/or in the cooler for feeding discharged air at least partially to the respective other air inlet opening. 111.-. (canceled)12. An electric machine , comprising:a housing having a front end and a rear end, said housing having a top face provided with a front air inlet opening in a vicinity of the front end, a rear air inlet opening in a vicinity of the rear end, and an air outlet opening extending the front air inlet opening and the rear air inlet opening;a stator arranged in the housing;a rotor supported in the housing for rotation about an axis of rotation;front and rear air conveying elements configured for drawing in air at the front and rear air inlet openings and for discharging air at the air outlet opening during operation of the electric machine;a cooler mounted on the top face of the housing and having side walls and a top cover sized to cover the front and rear air inlet openings and the air outlet opening in a hood-like manner, such that air discharged at the air outlet opening is fed back to the front and rear air inlet openings, said cooler including a front partition arranged between the air outlet opening and the front air inlet opening, and a rear partition arranged between the air outlet ...

Ship

The invention concerns a ship comprising at least one electric motor for driving a ship and a cooling device for cooling the at least one electric motor by means at least one coolant. It is further according to the invention that the cooling device has a heat exchanger adapted to cool the at least one coolant by means of sea water.

METHOD FOR COOLING AN ELECTRICITY GENERATOR AND DEVICE FOR PERFORMING SAID METHOD

A method for cooling an electricity generator () for delivering electricity to a first rotor (), the first rotor being suitable for being rotated relative to a stationary structure, the method being characterized in that the electricity generator is placed in a chamber () arranged inside the first rotor, and in that it comprises the following steps: 2. A cooling method according to claim 1 , wherein the heat transfer step a) is performed in a rotary evaporator forming part of the first rotor claim 1 , and/or the fluid condensation step c) is performed in a rotary condenser forming part of the first rotor.3. A device comprising a stationary structure claim 1 , a first rotor suitable for being rotated relative to the stationary structure claim 1 , an electricity generator for delivering electricity to the first rotor claim 1 , and a cooling system for discharging the heat produced by the electricity generator; wherein the electricity generator is arranged in a chamber arranged inside the first rotor claim 1 , and the cooling system comprises a circuit for circulating a two-phase cooling fluid claim 1 , the circuit connecting an evaporator that is thermally coupled to the electricity generator to a condenser that is suitable for discharging heat to the medium outside the first rotor.4. A device according to claim 3 , wherein the evaporator and/or the condenser is/are rotary claim 3 , and form(s) part of the first rotor.5. A device according to claim 3 , wherein the condenser and the evaporator are arranged so as to be radially offset relative to each other claim 3 , the evaporator being formed at a radial distance from the axis of rotation that is greater than the radial distance at which the condenser is arranged.6. A device according to claim 3 , where the cooling system as a whole is rotary claim 3 , forming part of the first rotor claim 3 , wherein the first rotor has a tubular portion containing the chamber; and the cooling system claim 3 , and possibly also a ...

Electrical rotating machine with one-sided cooling and method for one-sided cooling

An electrical rotating machine includes a laminated stator core having a first axial duct to convey a cooling air stream generated by a turbomachine through the laminated stator core to a rear stator winding overhang, and a second axial duct to return the cooling air stream from the rear stator winding overhang back through the laminated stator core. An air guide is attached to the laminated stator core on a side of the rear stator winding overhang to redirect the cooling air stream via the rear stator winding overhang. Radial slots between the ducts and an air gap between the laminated stator core and a rotor are spaced from one another at an axial distance which decreases toward a turbomachine-distal side of the laminated stator core so as to compensate a temperature gradient caused by the one-sided cooling.

METHOD FOR COOLING A GENERATOR

A method for cooling a generator using cooling air flowing through the generator, wherein a density of the cooling air when the generator is idling and running passively at a mains frequency of a mains network to which the generator is connected is reduced relative to a density of the cooling air when the generator is operating under load. 1. A method for cooling a generator using cooling air flowing through the generator , comprising:reducing the density of the cooling air in idle mode of the generator, in which the generator rotates passively at a grid frequency of a grid to which the generator is connected, relative to the density of the cooling air in load mode of the generator;wherein the density of the cooling medium in idle mode is reduced by increasing the moisture of the cooling medium,wherein the density of the cooling air in idle mode is reduced by at least partially replacing the cooling air with nitrogen;wherein the density of the cooling air in idle mode is reduced by at least partially replacing the cooling air with hydrogen below a lower ignition threshold.2. The method as claimed in claim 1 ,wherein the density of the cooling air in idle mode is reduced by increasing the recooling temperature which is used to recool the cooling air.3. The method as claimed in claim 1 ,wherein the density of the cooling air in idle mode is reduced by creating a reduced pressure inside a housing of the generator.4. The method as claimed in claim 2 ,wherein the density of the cooling air in idle mode is reduced by creating a reduced pressure inside a housing of the generator. This application is the US National Stage of International application Ser. No. PCT/EP2016/050104 filed Jan. 6, 2016, and claims the benefit thereof. The International Application claims the benefit of European application Ser. No. EP15152508 filed Jan. 26, 2015. All of the applications are incorporated by reference herein in their entirety.The invention relates to a method for cooling a generator ...

REEL MOTOR WITH CLOSED COOLING CIRCUIT

A reel motor () for a driven conveyor roller has a stator () that is surrounded by a stator housing (). A rotor () drives a rotor shaft (). A tubular external housing () runs around the stator housing () at a distance in the circumferential direction. A cooling duct () is fluidically connected to an interior of the stator housing () holding the stator (). The cooling duct is formed between the external housing () and the stator housing (). An impeller wheel () is secured to the rotor shaft (). The impeller wheel generates a cooling air flow (K). The interior of the stator housing () and the cooling duct () determine a closed cooling circuit. The cooling air flow is guided through the closed cooling circuit. 115.-. (canceled)16. A reel motor for a driven conveyor roller comprising:a stator surrounded by a stator housing and a rotor driving a rotor shaft;a tubular external housing runs around the stator housing at a distance in the circumferential direction;a cooling duct, is fluidically connected to an interior of the stator housing holding the stator, the cooling duct is formed between the external housing and the stator housing; andan impeller wheel is secured to the rotor shaft, the impeller wheel generates a cooling air flow, the interior of the stator housing and the cooling duct determine a closed cooling circuit through which the cooling air flow is guided.17. The reel motor according to claim 16 , whereinthe stator housing, along its axial longitudinal direction, has two external sections and, lying axially in between, a directly adjoining middle section,the stator and the rotor are arranged in the middle section, and,in the external sections of the stator housing, respective openings leading to the cooling duct are provided for the fluidic connection.18. The reel motor according to claim 17 , whereinthe openings extend in the radial direction.19. The reel motor according to claim 17 , whereinthe impeller wheel is provided on the rotor shaft in an area facing ...

CONDUCTION-COOLED SUPERCONDUCTING ROTATING MACHINE

Disclosed is a conduction cooling type superconducting rotator which includes a cryocooler, a rotary shaft including a columnar hall being spaced apart from the cryocooler to enclose the cryocooler and the rotary shaft configured to transfer a rotary power, a vacuum chamber including columnar halls arranged at both sides of the rotary shaft, first and second heat transfer elements being connected with the cryocooler and a heat transfer unit conducting a heat to the cryocooler through the first and second heat transfer elements wherein inner surfaces of the columnar halls and outer surfaces of the rotary shaft connectedly rotates and first and second cooling units configured to connect the first and second heat transfer elements and the cryocooler and the vacuum chamber is sequentially cooled in the first and second cooling unit. 1. A conduction cooling type superconducting rotator comprising:a cryocooler;a rotary shaft including a columnar hail being spaced apart from the cryocooler to enclose the cryocooler and the rotary shaft configured to transfer a rotary power;a vacuum chamber including columnar halls arranged at both sides of the rotary shaft, first and second heat transfer elements being connected with the cryocooler and a heat transfer unit conducting a heat to the cryocooler through the first and second heat transfer elements wherein inner surfaces of the columnar halls and outer surfaces of the rotary shaft connectedly rotates; andfirst and second cooling units configured to connect the first and second heat transfer elements and the cryocooler.2. The conduction cooling type superconducting rotator of claim 1 , wherein each of the first and second heat transfer elements is curvedly formed toward first and second directions in the vacuum chamber.3. The conduction cooling type superconducting rotator of claim 1 , wherein the first and second heat transfer elements mainly include a copper as a conductor and cool the vacuum chamber.4. The conduction cooling ...

SEALING STRUCTURE FOR PERIPHERAL AREA OF GENERATOR FAN

Provided is a sealing structure for sealing a peripheral area of a fan of a generator. The sealing structure includes a rotor, a fan assembly including a ring-shaped fan body coupled to an axial end of the rotor, multiple fan blades radially arranged along a circumferential surface of the fan body, and an annulus groove recessed, in an axial direction of the rotor, from an axial outer end surface of the fan body, a stator surrounding the rotor with an air gap provided between the stator and the rotor, a cooler positioned a predetermined distance apart from the stator, and a cooling gas duct including an outlet connected with the cooler and an inlet configured to cover the axial outer end surface of the fan body and an axial end of the air gap between the stator and the rotor, wherein an inlet-side end of the cooling gas duct includes a first member and a second member that are coaxially arranged and are positioned close to the axial outer end surface of the fan body and the axial end of the air gap, respectively, and an inlet-side end of the first member is inserted into the groove with a clearance, and a sealing device is provided on the inlet-side end of the first member. 1. A sealing structure for sealing a peripheral area of a fan of a generator , the sealing structure comprising:a rotor;a fan assembly including a ring-shaped fan body coupled to an axial end of the rotor, multiple fan blades radially arranged along a circumferential surface of the fan body, and an annulus groove recessed, in an axial direction of the rotor, from an axial outer end surface of the fan body;a stator arranged to surround the rotor with a predetermined air gap between the stator and the rotor;a cooler positioned a predetermined distance apart from the stator; andan annulus cooling gas duct including an outlet connected with the cooler and an inlet configured to cover the axial outer end surface of the fan body and an axial end of the air gap between the stator and the rotor,wherein ...

ELECTRIC ACTUATOR FOR DRIVING A HOTRUNNER VALVE PIN

A valve gate assembly for an injection molding apparatus having hotrunners includes electric motor and transmission mounted on a cooling block that is itself mounted directly on the hotrunner manifold. 1. A valve gate assembly for an injection molding apparatus having hotrunners , comprising:a manifold defining a resin channel for conveying liquid resin from an injection molding machine toward a mold cavity;a nozzle disposed on a lower surface of the heated manifold;a valve pin configured for linear movement within and along a longitudinal axis of the nozzle to control flow through the nozzle;an electric motor and transmission configured to drive the valve pin; anda cooling block or cooling blocks assembled on the heated manifold and supporting the electric motor and transmission.2. The assembly of claim 1 , wherein an adapter plate is disposed between the manifold and the cooling block.3. The assembly of claim 1 , wherein the cooling block or blocks extend along the sides of the motor.4. The assembly of claim 1 , wherein the cooling block or cooling blocks extend over a top of the motor.5. The assembly of claim 1 , wherein the cooling block or cooling blocks extend along the sides and over a top of the motor.6. The assembly of claim 1 , wherein the electric motor has a rotary output shaft.7. The assembly of claim 1 , wherein the transmission comprises rotary to linear converter.8. The assembly of claim 1 , wherein the rotary output shaft has a horizontal axis of rotation and the transmission comprises a first bevel gear coupled to the output shaft claim 1 , a second bevel gear on a driven shaft having a vertical axis of rotation claim 1 , the first bevel gear meshed with the second bevel gear claim 1 , and a rotary to linear converter for converting rotation of the driven shaft to linear movement of the valve pin.9. The assembly of claim 8 , wherein the gear ratio is greater than 2:1.10. The assembly of claim 8 , wherein the gear ratio is 3:1 or greater.11. The ...

Stator assembly, electric machine and wind turbine having the stator assembly

A stator assembly, an electric machine and a wind turbine having the stator assembly are provided. The stator assembly includes a stator iron core, a stator bracket supporting the stator iron core, and an air flow conveyer configured to convey a first cold air flow along the radial direction of the stator iron core to a radial side surface of the stator iron core opposite to an air gap side. The embodiment of the present disclosure enables two radial sides of the stator to be cooled at the same time. Thereby, the expansion and deformation of the stator iron core are reduced, the air gap is prevented from being narrowed, magnetic poles are protected from being baked by the high temperature of the stator, and the service life of the electric machine is prolonged.

POWER SYSTEMS AND ENCLOSURES HAVING IMPROVED COOLING AIR FLOW

Power systems and enclosures having improved cooling air flow are disclosed. In some examples, a power system includes an enclosure, a first air inlet, a first air routing path, and a second air routing path. The first air inlet is at a first location on an exterior of the enclosure to permit intake of air from the exterior of the enclosure to an interior of the enclosure. The first air routing path is defined by the enclosure and directs air from the first air inlet through a welding-type power supply and a compressor. The second air routing path is separate from the first air routing path and defined by the enclosure. The second air routing path directs the air from the first air inlet or a second air inlet through at least one of an engine or a generator. 1. A power system comprising:an enclosure;a first air inlet at a first location on an exterior of the enclosure to permit intake of air from the exterior of the enclosure to an interior of the enclosure; a welding-type power supply, and', 'a compressor; and, 'a first air routing path defined by the enclosure to direct the air from the first air inlet througha second air routing path, separate from the first air routing path, and defined by the enclosure to direct the air from the first air inlet or a second air inlet through at least one of an engine or a generator.2. The power system as defined in claim 1 , wherein the first air routing path is configured to route at least a portion of the air to cool at least one of the welding-type power supply or the compressor.3. The power system as defined in claim 1 , wherein the first air routing path is configured to route at least a portion of the air to be pressurized by the compressor.4. The power system as defined in claim 1 , wherein the first air routing path is configured to route at least a portion of the air to be released to a location external to the enclosure.5. The power system as defined in claim 1 , wherein the enclosure further comprises a wind tunnel.6. ...

STATOR ASSEMBLY, ELECTRICAL MOTOR, WIND POWER GENERATOR SET AND METHOD FOR COOLING STATOR ASSEMBLY

A stator assembly, an electrical motor having the stator assembly, a wind power generator set and a method for cooling a stator assembly are provided. The stator assembly includes a stator support and a stator core mounted on the stator support, wherein the stator support includes a support enclosure plate, a first axial air flow channel is formed between the support enclosure plate of the stator support and a radial side surface of the stator core, and the first axial air flow channel is used for receiving a first cold air flow, so that the cold air flow can flow in the axial direction. The stator assembly can introduce a cold air flow from the other side, opposite an air gap, of a stator during the operation of an electrical motor, so that two radial sides of the stator can be cooled at the same time. 1. A stator assembly , comprising:a stator bracket, anda stator core,{'b': '220', 'wherein the stator bracket comprises a support enclosure plate (), the stator core is mounted on the support enclosure plate, a first axial airflow channel is formed between the support enclosure plate and a radial side surface of the stator core,'}wherein the stator assembly further comprises an airflow delivering unit for supplying a first cold airflow to the first axial airflow channel, which makes the first cold airflow flow in an axial direction of the first axial airflow channel.2. The stator assembly according to claim 1 , wherein the stator assembly further comprises a bridging portion provided in the first axial airflow channel claim 1 , and the bridging portion extends in a radial direction of the stator assembly claim 1 , and has one end connected to the stator core and the other end connected to the support enclosure plate.3. The stator assembly according to claim 2 , wherein a plurality of bridging portions are provided claim 2 , each of which is in a shape of a column claim 2 , and the plurality of bridging portions are arranged in a row or a cross in a flow direction of ...

RING FOR AN ELECTRIC MACHINE

The present disclosure relates to a ring for a rotor of an electric machine as a support for a retaining ring and for cooling coils of the rotor. It is an object of the invention to provide measures for cooling coils of a rotor of an electric machine. Disclosed is a ring for an electric machine, the ring is connected between a retaining ring and coils wound around a rotor, whereas the ring is fabricated from a non-conductive material. 1. A ring for an electric machine , the ring is connected between a retaining ring and coils wound around a rotor , the ring is fabricated from a non-conductive material with the shape of wedges regarding the radial cross-section of the ring having a deeper cavity at the outer end than the cavity at the inner end.2. The ring according to claim 1 , wherein the non-conductive material is glass fibre.3. The ring according to claim 1 , wherein slots are formed in the outer face of the ring in the axial direction of the rotor.4. The ring according to claim 3 , wherein the slots have a rectangular shape and the slots are equidistant to each other.5. The ring according to claim 1 , wherein ventilation holes are designed in the slots to transport a cooling medium from the outside of the ring to the inside of the ring to the coils or from the inside of the ring from the coils to the outside of the ring.6. The ring according to claim 1 , wherein sheet layers are arranged between the ring and the coils for electrical insulation.7. Use of a ring according to for a rotor of an electric machine. This application claims priority to European Patent Application No. 15177903.0 filed Jul. 22, 2015, the contents of which are hereby incorporated in its entirety.The present disclosure relates to a ring for a rotor of an electric machine as a support for a retaining ring and for cooling coils of the rotor.The electric machine is in particular a rotating electric machine such as a synchronous generator to be connected to a gas or steam turbine (turbogenerator ...

Vent system for load coupling guard

A gas turbine system includes a load coupling connecting a gas turbine to a generator. A load coupling guard surrounds the load coupling to define an enclosed spaced around the load coupling. The load coupling guard includes a porous sleeve such that hydrogen coolant leaked into the load coupling guard from the generator is vented to ambient air.

RADIAL VENTILATION COOLING STRUCTURE FOR MOTOR

A radial ventilation cooling structure for a motor includes at least three core sections, a ventilation channel steel is provided between every two adjacent core sections, and a ventilation channel is formed between the ventilation channel steel and the every two adjacent core sections, and impedances of the multiple ventilation channels are gradually increased in a direction from two ends of the motor to a center of the motor. 1. A radial ventilation cooling structure for a motor , comprising at least three core sections , a ventilation channel steel provided between every two adjacent core sections , and a ventilation channel formed between the ventilation channel steel and the every two adjacent core sections , wherein impedances of a plurality of ventilation channels are gradually increased in a direction from two ends of the motor to a center of the motor.2. The radial ventilation cooling structure for the motor according to claim 1 , wherein impedances of ventilation paths where the plurality of ventilation channels are located are equal claim 1 , and the impedance of each of the ventilation paths is equal to the sum of the impedance of the respective ventilation channel in the ventilation path and a impedance of an air gap in the ventilation path.3. The radial ventilation cooling structure for the motor according to claim 1 , wherein the ventilation channel steel comprises a plurality of groups claim 1 , and each group comprises at least one of the ventilation channel steels claim 1 , each group employs any one of the following structures: the ventilation channel steel being arranged in the form of an integral straight line shape claim 1 , sections of the ventilation channel steel being arranged linearly claim 1 , sections of the ventilation channel steel being staggered claim 1 , sections of the ventilation channel steel being arranged in the form of a character “” claim 1 , sections of the ventilation channel steel being arranged in the form of an inverted ...

MOTOR AND BEARING COOLING PATHS

A compressor includes a rotor configured to compress air and driven by a shaft. A motor is drives the shaft. The first and second journal bearings facilitate rotation of the shaft. The first journal bearing is upstream from the motor and the second journal bearing is downstream from the motor. The transfer tube is configured to provide cooling air from a bearing cooling air inlet to the first journal bearing. A method for cooling a compressor is also disclosed. 1. A compressor comprising:a rotor driven by a shaft and configured to compress air;a motor for driving the shaft;first and second journal bearings for facilitating rotation of the shaft, wherein the first journal bearing is upstream from the motor and the second journal bearing is downstream from the motor; anda transfer tube, the transfer tube configured to provide cooling air from a bearing cooling air inlet to the first journal bearing.2. The compressor of claim 1 , wherein the cooling air travels in the same direction through the first journal bearing as a direction of airflow through the compressor.3. The compressor of claim 1 , further comprising a thrust bearing configured to facilitate rotation of the shaft claim 1 , the thrust bearing arranged downstream from the second journal bearing claim 1 , and wherein the bearing cooling air inlet is in fluid communication with the thrust bearing.4. The compressor of claim 3 , wherein the thrust bearing includes a thrust shaft and a thrust plate claim 3 , the thrust shaft including first and second orifices claim 3 , wherein the first and second orifices are in fluid communication with the bearing cooling air inlet.5. The compressor of claim 4 , wherein the second journal bearing is in fluid communication with the second orifice and wherein the thrust bearing is in fluid communication with the first orifice.6. The compressor of claim 4 , further comprising a passage between the motor and the shaft claim 4 , wherein the passage is in fluid communication with ...

Electric Motor

An electric motor (1), at least having: a housing (2) and a stator (3) situated therein with at least a plurality of coils (4); and a rotor (5) with at least one magnet (6), an axis of rotation (7) and an outer circumferential surface (8); wherein: the stator (3) and the rotor (5) are adjacent to one another along the axis of rotation (7); the rotor (5) has a fluid conduction structure (9) between the axis of rotation (7) and the outer circumferential surface (8); the fluid conduction structure (9) has at least one surface (13) extending at least radially (10) and being inclined relative to at least a circumferential direction (11), or to an axial direction (12) running parallel to the axis of rotation (7); and at least part of a fluid flow (14), transported through the fluid conduction structure (9) inside the housing (2) during the operation of the motor (1), can be conducted over the coils (4).

WIND TURBINE

A wind turbine includes a generator having a generator cooling system configured for passage of a cooling fluid, and a gear unit including a gear unit cooling system configured for passage of a cooling fluid. The gear unit cooling system includes a recooling unit which is configured to transmit during normal operation of the wind turbine thermal energy from the cooling fluid of the gear unit cooling system to air inside the generator or to the cooling fluid of the generator cooling system. 1. A wind turbine , comprising:a generator including a generator cooling system configured for passage of a cooling fluid; anda gear unit including a gear unit cooling system configured for passage of a cooling fluid, said gear unit cooling system comprising a recooling unit configured to transmit during normal operation of the wind turbine thermal energy from the cooling fluid of the gear unit cooling system to air inside the generator or to the cooling fluid of the generator cooling system.2. The wind turbine of claim 1 , wherein the cooling fluid of the generator cooling system is air and the cooling fluid of the gear unit cooling system is oil claim 1 , said recooling unit being configured as an air-to-oil heat exchanger which is integrated into the generator cooling system and configured to transmit during normal operation of the wind turbine thermal energy from the cooling fluid of the gear unit cooling system to the cooling fluid of the generator cooling system.3. The wind turbine of claim 1 , wherein the cooling fluid of the generator cooling system is air and the cooling fluid of the gear unit cooling system is oil claim 1 , said generator cooling system including an air-to-air heat exchanger configured to transmit during normal operation of the wind turbine thermal energy from air inside the generator to the cooling fluid of the generator cooling system to thereby cool the air claim 1 , said recooling unit being configured as an air-to-oil heat exchanger integrated into ...

SELF-ILLUMINATION DENTAL HANDPIECE

A self-illumination dental handpiece includes a shell having a receiving space. The shell is assembled to a working room. An electricity-generation device is in the receiving space and includes first and second housings. A rotatable fan is in the second housing. The fan is coaxially connected to a magnet bar that is surrounded by a coil. The coil is electrically connected to a first conductive terminal engaged with a second conductive terminal, and the second conductive terminal is connected to a light-emitting device by a wire. A gas inlet pipe, a backflow pipe, a cooling-water pipe, and a cooling-gas pipe are in the receiving space. The pipes are positioned by a positioning member. The gas inlet pipe is connected to an external gas supply and the working room, and the backflow pipe is connected to the working room and the electricity generation device. 1. A self-illumination dental handpiece , comprising:a light emitting device;a shell forming a receiving space therein, a working room disposed at and connected to one end of the shell, and a workpiece assembled in the working room;an electricity generation device assembled in the receiving space of said shell and electrically couple to said light emitting device, the electricity generation device comprising a first housing having a first wall and a second housing having a second wall, the first housing enclosing a first room, and the second housing enclosing a second room, wherein the second housing is assembled in the first room with the second wall thereof radially spaced from the first wall of the first housing by an interval, wherein the second wall of said second housing is formed with at least one via hole, said first and second rooms of said first and second housings, respectively, being in communication through said at least one via hole;a rotatable fan assembled in the second room of said second housing, said fan being coaxially connected to a magnet bar;a coil surrounding the magnet bar and electrically ...

ELECTRIC MACHINE WITH CLOSED CIRCUIT AIR COOLING

An electric machine with a closed circuit air cooling provides using only passive elements to realize an efficient and compact heat transfer from inside the electric machine to an ambient heat sink. 1. An electric machine comprising a housing and within the housing a closed cooling circuit , wherein at least a part of the housing is a heat exchanger that transfers heat from the cooling air through the part of the housing into an ambient heat sink.2. The electric machine according to claim 1 , wherein the cooling circuit includes at least one heating section claim 1 , where heat from the active components of the electric machine is absorbed by the cooling air claim 1 , and at least one further section claim 1 , where heat is eliminated from the cooling air claim 1 , and in that the further section is at least partially limited by the part of the housing.3. The electric machine according to claim 2 , wherein at the further part or section of the housing is at least partially equipped with one or more cooling ribs or fins.4. The electric machine according to claim 3 , wherein at least one cooling fin is located inside the housing and absorbs heat from the cooling air.5. The electric machine according to claim 3 , wherein at least one cooling fin is located outside the housing and transfers heat to the ambient.6. The electric machine according to claim 3 , wherein at least one cooling fin has a triangular cross section.7. The electric machine according to claim 1 , wherein the heat sink outside the housing is ambient air or gaseous or liquid cooling medium claim 1 , like water.8. The electric machine according to claim 1 , wherein the electric machine is a generator claim 1 , a motor or a converter. This application claims priority to European application 13184550.5 filed Sep. 16, 2013, the contents of which are hereby incorporated in its entirety.The claimed invention is related to electric machines, more specifically to a closed circuit air cooling system of an ...

Compressor driving motor and cooling method for same

A compressor driving motor includes: a rotor; a stator surrounding an outer peripheral part of the rotor; a case accommodating the rotor and the stator; a liquid introduction path introducing a liquid refrigerant from a refrigerant circuit including a compressor; and a gas introduction path introducing a gas refrigerant from the refrigerant circuit. The case includes a downstream chamber located on one end side of the rotor and the stator in an axial direction and provided with the compressor, and an upstream chamber located on the other end side in the axial direction and communicating with the downstream chamber through a gap between the outer peripheral part of the rotor and an inner peripheral part of the stator. The introduced liquid refrigerant and the introduced gas refrigerant are mixed in the upstream chamber, and wet steam of the mixed refrigerant is supplied to at least the gap.

POD PROPULSION UNIT OF A SHIP

The invention relates to a pod propulsion unit of a ship. The pod propulsion unit comprises a pod housing arranged at least partly below a hull of the ship, an electric propeller motor within a motor gondola of the pod housing, an annular gap between a rotor and a stator of the electric propeller motor, and gas channels extending through the rotor, a closed cooling gas circuit, and a fan for circulating gas in the closed cooling gas circuit. The closed cooling gas circuit comprising a feeding duct extending between the return duct and the first motor end face of the electrical propeller motor, and a return duct extending between the feeding duct and the opposite second motor end face of the electrical propeller motor. 2. The pod propulsion unit according to claim 1 , which further includes an gas-liquid heat exchanger arranged in the closed cooling gas circuit between the feeding duct and the return duct for exchanging thermal energy between gas flowing in the closed cooling gas circuit and liquid circulating in at least one cooling liquid circuit.3. The pod propulsion unit according to claim 2 , wherein the cooling liquid circuit being a closed cooling liquid circuit.4. The pod propulsion unit according to claim 2 , wherein the closed cooling liquid circuit being a part of a closed cooling liquid system of the ship.5. The pod propulsion unit according to wherein the fan and the gas-liquid heat exchanger being parts of an independent cooling unit.6. The pod propulsion unit according to claim 5 , wherein the independent cooling unit being provided outside the pod housing and within the hull of the ship7. The pod propulsion unit according to which further comprises by a first temperature sensor for measuring temperature of the gas flowing in the closed cooling gas circuit downstream of the electric propeller motor and upstream of the gas-liquid heat exchanger claim 2 , andwhich further comprises a second temperature sensor for measuring temperature of the gas flowing ...

THYRISTOR STARTER

A thyristor starter is configured to accelerate a synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode of performing commutation of an inverter by intermittently setting DC output current of a converter to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. The thyristor starter is further configured to raise induced voltage in proportion to the rotation speed of the synchronous machine by keeping field current constant and to suppress rise of the induced voltage by reducing the field current after the induced voltage reaches a first voltage value, in the first mode. 1: A thyristor starter for starting a synchronous machine having a rotor having a field winding and a stator , comprising:a converter that converts AC power into DC power;a DC reactor that smooths the DC power;an inverter that converts the DC power applied from the converter through the DC reactor into AC power with a variable frequency and supplies the AC power to the stator; andan exciter that supplies field current to the field winding, whereinthe thyristor starter accelerates the synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode and a second mode, the first mode performing commutation of the inverter by intermittently setting DC output current of the converter to zero, the second mode performing commutation of the inverter by induced voltage of the synchronous machine, andthe thyristor starter further raises the induced voltage in proportion to rotation speed of the synchronous machine by keeping the field current constant and suppresses rise of the induced voltage by reducing the field current after the induced voltage reaches a first voltage value, in the first mode.2: The thyristor starter according to claim 1 , wherein the thyristor starter keeps the induced voltage at the first voltage value by reducing the field ...

HERMETIC MOTOR COOLING AND CONTROL

An apparatus and method for cooling a compressor motor () having a motor stator () and cooling a rotor () in a refrigerant system (). The method cools the rotor and the stator, electromagnetic bearings () located within a compressor housing by providing refrigerant liquid to the stator internal channels, the channels being in fluid communication with a rotor passageway (), and a flow-control device () controlling refrigerant flow into the stator. A temperature monitoring device () in communication with a controller () monitors motor temperature. The controller () evaluates the motor temperature and adjusts refrigerant flow through the flow control device (), maintaining the motor () within a predetermined temperature range. 1. A compressor assembly comprising:a compressor housing;{'b': '100', 'a compressor () positioned within the housing;'}{'b': '100', 'a compressor inlet, to input refrigerant gas to the compressor ();'}{'b': '152', 'claim-text': a motor housing,', {'b': 162', '164, 'a stator () positioned within the motor housing, the stator having windings and cooling channels (),'}, {'b': 166', '162', '102, 'a rotor () positioned within the stator (), the rotor having a shaft having a first end connected to an impeller () the compressor and a second end,'}, {'b': 166', '100, 'wherein when electrical current is applied to the stator windings, the rotor () rotates, causing the compressor () to operate;'}, {'b': 160', '166, 'electromagnetic bearings () positioned at both ends of the rotor () to support the rotor when current is applied to the stator windings;'}], 'a motor (), the motor comprising'}{'b': '152', 'claim-text': [{'b': '176', 'a temperature monitoring device () positioned within the stator;'}, {'b': 186', '190', '162, 'a stator inlet () and a stator outlet (), the stator inlet receiving liquid refrigerant for cooling the stator (),'}, {'b': 192', '170', '174', '190, 'a rotor inlet (), a rotor liquid () drain and a rotor gas vent (), the rotor inlet ...

Integrated pressure compensating heat exchanger and method

An integrated pressure compensating heat exchanger and method of use are provided. The integrated pressure compensating heat exchanger includes an inlet configured to input an internal fluid; a first conductive bellows connected to the inlet, configured to accept the internal fluid from the inlet, configured to transfer heat between the internal fluid and an external fluid, and configured to compensate for a pressure by compressing in length; and an outlet configured to accept the internal fluid from the first conductive bellows and to output the internal fluid.

METHOD AND EQUIPMENT FOR COOLING GENERATORS

According to the method, either CO2-free air or pure nitrogen N2 is pumped into the cooling circuit selectively depending on system parameters. To this end, the method ensures that the air injection rate is high enough that, under normal conditions, the hydrogen concentration in the tank and in the riser remains below 2% H2. On air injection, the oxygen O2 (>2 ppm) in the cooling water reacts with the copper in the cooling ducts and a layer of copper oxide forms on the inner walls of said ducts. No reaction is triggered by the injection of nitrogen N2. The CO2 content in the injection air and, at the same time, also the H2 content in the exhaust air are continuously measured and monitored, and an alarm is triggered if adjustable limit values are exceeded. The equipment for performing the method comprises an electronic control unit () with an input field and display as a control box, and a pump and a pipe circuit for drawing air in from the riser. The control unit () can evaluate all the measured data from the sensors and analysers connected to the pipe and can at least check the CO2 content in the supply air and the H2 content in the riser () and display the hydrogen leakage. 1. Method for cooling the copper lines of large electric generators , after which , depending on the system parameters , either CO-free air or pure nitrogen Nis pumped into the cooling circuit.2. Method according to claim 1 , characterized in that claim 1 , depending on the system parameters claim 1 , either CO-free claim 1 , oil- and dust-free air with downstream COcontent measurement or pure nitrogen Nis pumped into the cooling circuit with an injection rate of more than 0.15 cfm claim 1 , and thus always outside the critical air quantity proportion for the hydrogen Hcontained in the cooling circuit claim 1 , i.e. outside 4-75% Hin the air claim 1 , and thus outside the explosive ratio claim 1 , whereby the pumped oxygen in the stator cooling water system with the copper of the cooling ...

LOAD OPERATION CONTROL SYSTEM

A drive shaft rotates a load. A drive support rotates the drive shaft and supports a radial load of the drive shaft in a non-contact manner, by an electromagnetic force generated by the flow of a current within a predetermined current range through the drive support. A control section controls an operation of the load based on a magnetic flux margin degree expressed by the difference between a total magnetic flux amount generated at the drive support and a predetermined limit of the total magnetic flux amount for the drive support. The total magnetic flux amount includes driving magnetic flux and the supporting magnetic flux in a predetermined operation region of the load. The driving magnetic flux is generated at the drive support for rotating the drive shaft. The supporting magnetic flux is generated at the drive support for supporting a radial load of the drive shaft. 1. A load operation control system , comprising:a drive shaft which rotates a load;a drive support which rotates the drive shaft and supports a radial load of the drive shaft in a non-contact manner, by an electromagnetic force generated by flow of a current within a predetermined current range through the drive support; anda control section which controls an operating condition of the load based on a magnetic flux margin degree expressed by a difference between: a total magnetic flux amount including driving magnetic flux and supporting magnetic flux; and a predetermined limit of the total magnetic flux amount for the drive support, the driving magnetic flux being generated at the drive support for rotating the drive shaft and the supporting magnetic flux being generated at the drive support for supporting the radial load of the drive shaft in a predetermined operation region of the load.2. The system of claim 1 , whereinthe drive support has at least one bearingless motor having a set of a rotor and a stator to rotate the drive shaft and supporting the radial load of the drive shaft in a non- ...

INCREASING THE APPARENT POWER OF GAS-COOLED TURBOGENERATORS BY WAY OF INCREASED PRESSURE IN THE HOUSING

Provided is an improved shaft seal and/or modifications of the outer housing, an air-cooled generator can be modified in such a way that it can be operated at an overpressure and a higher power output can be achieved. Disclosed is a first embodiment of the invention for increasing gas pressure in a generator through use of shaft seals; a second embodiment of the invention for increasing gas pressure in a generator through use of reinforcing elements; and a third embodiment of the invention for increasing gas pressure in a generator through use of outer housing thickness. 1. A method for increasing the power of a generator ,in the case of servicing,a gas being used for cooling in the interior of the generator,in which method a shaft seal of the generator against a positive pressure in the outer housing of the generator of at least 120 kPa,orambient pressure which is at least 10% higher,is installed or replaced,and/orthe outer housing of the generator is reinforced by way of reinforcing elements,and/orthe outer housing of the generator is replaced by a housing of greater mechanical strength, and the generator is operated at a gas overpressure.2. A generator which has a shaft seal against positive pressure in the outer housing ,and/orthe outer housing of which has reinforcing elements,and/orthe outer housing of which has been replaced by or has an outer housing which is thicker or of greater mechanical strength.3. The generator as claimed in claim 2 ,in which the shaft seal seals against at least 120 kPa.4. The method or generator as claimed in claim 1 ,in which the reinforcing elements are a T-beam or I-beam, andare welded or brazed, onto the outer housing. This application claims priority German application No. 10 2015 219 359.4 having a filing date of Oct. 7, 2015, the entire contents of which are hereby incorporated by reference.The following relates to increasing the power of air-cooled generators by way of an increased pressure in the housing, in particular in ...

Dynamo for an internal combustion engine

An electric generator may include a housing having a housing casing running around in a circumferential direction and front and rear side walls, a radially outer stator rotatably arranged on the housing about an axis of rotation, and a radially inner rotor arranged on the housing in a rotationally fixed manner. The generator may also have an axially outer impeller wheel arranged on an outer side of the front side wall and arranged in a rotationally fixed fashion on the rotor. The generator may further have a primary air inlet having inlet openings formed in the rear side wall, a secondary air inlet having secondary inlet openings formed in the housing casing, an air outlet having a plurality of outlet openings formed in the front side wall, a primary air path from the primary air inlet to the air outlet, and a secondary air path from the secondary air inlet to the air outlet. During operation, the impeller wheel may rotate with the rotor and generate a partial vacuum that generates a primary air flow, which enters the primary air inlet, follows the primary air path, and exits through the air outlet, and a secondary air flow, which enters through the secondary air inlet, follows the secondary air path, and exits through the air outlet.

POWER TRAIN

A power train may include an engine including a crankshaft and an engine block, a rotor portion connected to the crankshaft and of which a magnet is connected to a first side thereof, a stator portion disposed between the rotor portion and the engine block and a cylinder block water jacket formed on the engine and to which a motor cooling port for cooling a motor is formed. 1. A power train comprising:an engine including a crankshaft and an engine block;a rotor portion connected to the crankshaft and of which a magnet is connected to a first side of the rotor portion;a stator portion disposed between the rotor portion and the engine block; anda cylinder block water jacket formed on the engine and on which a motor cooling port for cooling a motor is formed.2. The power train of claim 1 , further comprising a motor housing connected to the engine block and on which a housing hole is formed claim 1 ,wherein an inlet and an outlet for coolant from the motor cooling port to be flown are formed to the motor housing for cooling the stator portion.3. The power train of claim 2 , wherein the stator portion comprises:a core plate of which a coil wraps along a radial direction of the core plate; anda stator plate on which a coil groove, into the coil is inserted therein, is formed.4. The power train of claim 2 , wherein a receiving portion for seating the stator portion is formed on the motor housing.5. The power train of claim 3 , wherein:the inlet supplies the coolant to the stator plate; andthe outlet exhausts the coolant from the stator plate.6. The power train of claim 3 , wherein:a cooling chamber is formed within the stator plate along a radial direction thereof; andthe cooling chamber communicates with the inlet and the outlet.7. The power train of claim 1 , further comprising:a transmission; anda clutch selectively transmitting rotation of the rotor portion to the transmission.8. The power train of claim 2 , wherein the rotor portion comprises:a protrude portion ...

Rotating electrical machine gas dryer

A gas dryer of the invention, being a heaterless type of gas dryer that carries out dehumidifying of hydrogen gas circulating in an interior of a rotating electrical machine, includes a drying tower that causes moisture in the hydrogen gas to adsorb to a desiccant, and a funnel-form desiccant holding portion disposed in an interior of the drying tower and holding the desiccant, wherein the desiccant is introduced into the desiccant holding portion from an input valve of an upper portion of the drying tower, and moist desiccant is discharged from a discharge valve of a lower portion of the drying tower. The desiccant holding portion is configured of perforated metal, or the like, having ventilation, and is used as a partitioning plate that partitions the interior of the drying tower.

Motor Can Seal and Shaft

A universal device for capping and mounting a motor within a motorized pool cleaner housing that allows a motor pump to be installed in different brands of pool cleaners and used at increased depths underwater. An improved motor can seal has an outer seal having a first diameter, an inner seal having a second diameter and an intermediate seal connecting the outer seal to the inner seal where the inner seal is tapered towards the distal end of the inner seal. An improved motor shaft is used having a head section, a body section and a seal area, wherein the seal area is hard chrome plated. 2. The motor can seal of wherein said inner seal has an inner wall and an outer wall claim 1 , said inner wall extends perpendicular from said intermediate seal claim 1 , and said outer wall is tapered towards the distal end of said inner seal such that the cross sectional shape of said inner seal is a wedge.3. The motor can seal of wherein the outer wall is tapered at an angle of 6 degrees.5. A motor shaft comprising:a head section; anda body section having a first end and a second end, said first end of said body section abuts said head section;extending from said first end of said body section towards said second end is a seal area;wherein said seal area is hard chrome plated.6. The motor shaft of wherein said seal area is plated in 4-8 RMS polished hard chrome plating.7. The motor shaft of wherein said seal area is about 20-25% of said body section.8. The motor shaft of wherein said entire motor shaft is hard chrome plated.9. The motor shaft of wherein said seal area is plated to about 0.004 inch thick.10. A universal device for capping and mounting a motor within a motorized pool cleaner housing comprising:a base having an edge and first and second surfaces and a central through opening; andat least first and second sets of generally cylindrical posts, each post having a curved surface, extending generally perpendicular from said first surface of said base, said first set of ...

SUPERCRITICAL CO2 COOLED ELECTRICAL MACHINE

Systems and methods are provided to cool a heat producing component in an electrical machine system. The electrical machine includes a supercritical carbon dioxide (SCO) wherein the SCOis a working medium of a heat exchanger that is arranged in the electrical machine system to cool a fluid that cools the heat producing component and/or wherein the SCOdirectly cools at the heat producing component. 1. A system comprising:a dynamoelectric machine comprising a stator, and a rotor rotatable relative to the stator, the stator and the rotor are heat generating components; and{'sub': '2', 'a supercritical carbon dioxide (SCO),'}{'sub': '2', 'wherein the dynamoelectric machine comprises a heat exchanger to cool a fluid that cools at least one of the heat generating components, the SCOis a working medium of the heat exchanger, the working medium is heated during the heat exchange to form a heated working medium.'}2. The system according to claim 1 ,{'sub': '2', 'wherein the SCOis the working medium of a heat exchanger, and'}wherein the fluid is air, water or hydrogen.3. The system according to claim 2 ,wherein a heated working medium of the heat exchanger is discharged to the atmosphere.4. The system according to claim 2 ,wherein a heated working medium of the heat exchanger is sequestered.5. The system according to claim 2 ,wherein a heated working medium of the heat exchanger is used as a working medium in a further component in the system.6. The system according to claim 5 , comprising:an egress conduit arranged between the dynamoelectric machine and the further component, the egress conduit configured to conduct the heated working medium to the further component.7. The system according to claim 6 , comprising:an ingress conduit arranged between the dynamoelectric machine and the further component, the conduit configured to conduct a discharged working fluid from the further component to the heat exchanger,wherein the ingress conduit and the egress conduit form a closed ...

METHODS AND SYSTEMS FOR DRYING HYDROGEN GAS USED IN HYDROGEN-COOLED GENERATORS

A hydrogen gas dryer or system for drying or removing water from hydrogen gas for use in hydrogen-cooled generators includes a drying tower or column comprising a housing, a heater, a desiccant, and a controller. The system is configurable and operable for regeneration of the saturated column, with activation of the heater to cause water retained in the saturated desiccant to turn into steam such as steam and exit on its own via the vent. A supply of generally dry hydrogen is used to purge the remaining vaporized water from the isolated substantially dry regenerated desiccant. 1. A method for drying hydrogen for use in a hydrogen-cooled generator , the method comprising:passing a supply of a portion of the hydrogen gas in the hydrogen-cooled generator through a desiccant and returning the supply of the portion of the hydrogen passed through the desiccant to the hydrogen-cooled generator to saturate the desiccant;isolating the substantially saturated desiccant from fluid communication with the hydrogen-cooled generator and from the atmosphere;heating the substantially saturated desiccant to vaporize water in the isolated desiccant;venting the vaporized water to atmosphere from the isolated saturated desiccant to substantially dry the isolated saturated desiccant;introducing a supply of generally dry hydrogen to purge remaining vaporized water from the isolated substantially dry desiccant; andpassing a supply of a portion of the hydrogen in the hydrogen-cooled generator through the substantially dry desiccant and returning the supply of the portion of the hydrogen passed through the substantially dry desiccant to the hydrogen-cooled generator to saturate the desiccant.2. The method of wherein the heating and venting comprises heating and venting for a first predetermined time claim 1 , and the introducing comprises introducing the purging for a second predetermined time about one-tenth to about one-twentieth of the first predetermined time.3. The method of wherein the ...

Electric rotating machine

An electric rotating machine does not require management of the gap between a fan guide at a small-diameter portion and a fan fixing portion and can suppress the manufacturing and maintenance costs from increasing. An electric rotating machine is provided with a small-diameter portion fan guide that extends both in a circumferential direction and in an axial direction in such a way as to be provided a space in the radial-direction outer side of a small-diameter portion that is a portion of an extending axle portion, of a rotation axle, that extends in the axial direction from a rotor, the portion being at an axial-direction departing side than a fan fixing portion to which an axial-flow fan is fixed and in such a way that the small-diameter portion fan guide is disposed to be provided a space with the fan fixing portion in the axial direction.

LINEAR SHAFT MOTOR

A linear shaft motor () comprising a slider () and a tubular magnetic shaft (), whereas the slider () comprises an oblong cuboid shaped motor housing () having a rectangular cross-section with a longitudinal central bore (). According to the invention the motor housing () comprises at least two longitudinal cooling holes () which are part of an integrated fluid cooling circuit. According to the invention the at least two longitudinal cooling holes (-) are distributed symmetrically at a left and at a right side of the central bore (), whereas the central axis () of any of the longitudinal cooling holes (-) lays below the topmost portion () of the central bore () and above the lowermost portion () of the central bore (). 1110301010110610510110110101180101161162163164165166167168161168180161168101151611682018025180. A linear shaft motor () comprising a slider () and a tubular magnetic shaft () , whereas the slider () comprises an oblong cuboid shaped motor housing () having a rectangular cross-section with the broader surfaces forming the bottom surface () and top surface () of the motor housing () and the narrower surfaces forming the lateral surfaces of the motor housing () , whereas the slider () further comprises an integrated fluid cooling circuit , and whereas the motor housing () comprises a longitudinal central bore () in which a row of coils are located , wherein , the motor housing () comprises at least two longitudinal cooling holes ( , , , , , , , ) which are a part of the integrated fluid cooling circuit , said at least two longitudinal cooling holes (-) being distributed symmetrically at a left and at a right side of the central bore () and parallel thereto , said at least two longitudinal cooling holes (-) are further distributed within the motor housing () so that the central axis () of any of the longitudinal cooling holes (-) lays below the topmost portion () of the central bore () and above the lowermost portion () of the central bore (). ...

An electric machine

The electric machine comprises a cylindrical rotor with axial first air channels and a stator with axial second air channels. The outer surface of the stator is provided with cooling fins. There is a first air chamber at a first end of the rotor, a second air chamber and an adjacent third air chamber at a second end of the rotor. A first fan circulates internal air from the first axial air channels to the second air channels in a closed air circulation within the electric machine. A second fan blows external cooling air from the outside of the electric machine through the third air chamber and from the outlet opening of the third air chamber along the outer surface of the stator. The number of second air channels in the stator is three.

COOLING ARRANGEMENT

A cooling arrangement realised to cool stator windings of a stator enclosed in a generator housing, which cooling arrangement includes a fan arrangement for directing a gaseous cooling medium towards a winding overhang of the stator windings; and a volume reducer arranged to reduce a spatial volume between the winding overhang and an inner corner of the generator housing, is provided. A direct-drive wind turbine, a method of cooling stator windings of a stator enclosed in a generator housing, and a method of retrofitting a wind turbine, is also provided. 1. A cooling arrangement configured to cool stator windings of a stator enclosed in a generator housing , the cooling arrangement comprising:a fan arrangement for directing a gaseous cooling medium towards a winding overhang of the stator windings; anda volume reducer arranged to reduce a spatial volume between the winding overhang and an inner corner of the generator housing.2. The cooling arrangement according to claim 1 , wherein the volume reducer is arranged along an interior surface of the generator housing.3. The cooling arrangement according to claim 1 , wherein the volume reducer comprises an annular body dimensioned according to an annular inner edge of the generator housing.4. The cooling arrangement according to claim 1 , wherein the volume reducer comprises a foam ring.5. The cooling arrangement according to claim 1 , wherein the volume reducer comprises a rigid annular body.6. The cooling arrangement according to claim 1 , wherein a shape of a radial cross-section of the volume reducer is based on a position of the winding overhang relative to the generator housing.7. The cooling arrangement according to claim 1 , wherein the volume reducer is shaped according to a temperature differential between a first winding overhang region and a second winding overhang region.8. The cooling arrangement according to claim 1 , comprising a suction apparatus configured to draw the gaseous cooling medium through the ...

Electric Machine

An electric machine, with a stator and a rotor. The rotor is provided with a sheet metal packet fixed to the rotor shaft of the electric machine having sheet metal plates stacked in the axial direction of the rotor. The sheet metal packet and at least one short-circuit ring arranged on an axial side of the sheet metal plate form at least one cooling channel for a cooling fluid which extends at least in sections in the radial direction of the rotor.

CARBON DIOXIDE ENVIRONMENTAL CONTROL SYSTEM

An electrochemical system utilizes an anion conducting layer disposed between an anode and a cathode for transporting a working fluid. The working fluid may include carbon dioxide that is dissolved in water and is partially converted to carbonic acid that is equilibrium with bicarbonate anion. An electrical potential across the anode and cathode creates a pH gradient that drives the bicarbonate anion across the anion conducting layer to the cathode, wherein it is reformed into carbon dioxide. Therefore, carbon dioxide is pumped across the anion conducting layer. 1. An environmental control system that is coupled with an enclosure and comprises: i) an anode:', 'ii) a cathode,', 'iii) an anion conducting layer between and in contact with the anode and cathode and comprising an anion conducting polymer;, 'a) an electrochemical system comprisingb) a working fluid;c) a power supply coupled electrically with the anode and cathode to produce a voltage potential across the anode and cathode;wherein the carbon dioxide control cell is in fluid communication with said enclosure; wherein the voltage potential at the anode produces hydroxyl ions and wherein the voltage potential at the anode consumes hydroxyl ions to create a pH gradient to transfer the working fluid from the anode to the cathode.2. The environment control system of claim 1 , further comprising an MEA air moving device that produces a flow of process air onto the anode.3. The environmental control system of claim 1 , wherein the working fluid comprises carbon dioxide and one of either oxygen or air.4. The environmental control system of claim 2 , wherein the carbon dioxide is in equilibrium with bicarbonate ions and wherein the bicarbonate ions are transported through the anion conducting layer from the anode to the cathode and reformed into carbon dioxide at the cathode.5. The environmental control system of claim 1 , wherein the anion conducting polymer comprises quaternary ammonium functional groups.6. The ...

POD PROPULSION DEVICE AND A METHOD FOR COOLING SUCH

The invention relates to a system and method for cooling of a pod propulsion device, including a motor casing () and a strut (), which strut () is connected at a lower part thereof to the motor casing () and is arranged to be connected at an upper part thereof to a hull () of a ship, said motor casing () including a housing () enclosing an electric motor () with a stator () and a rotor, wherein periodically a forced cooling air flow (W,S) is shifted to use a front duct (A) as supply (S) for limited time period TF and thereafter shift to use the aft duct (B) as supply (S) for a limited time period TA. The invention also relates to a ship provided with such a system and method for cooling of pod propulsion device. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. A method for cooling a pod propulsion device of a ship , comprising:supplying a forced cooling air flow to an electric motor via one of a first duct and a second duct of the pod propulsion device while withdrawing the forced cooling air flow from the electric motor via the other of the first duct and the second duct; wherein the pod propulsion device comprises a strut including a lower part connected to a motor casing and an upper part connected to a hull of the ship, and wherein the motor casing includes a motor housing enclosing the electric motor, and the electric motor comprises a stator and a rotor; andcontrolling the forced cooling air flow to periodically shift direction of the forced cooling air flow so that during a first limited time period the forced cooling air flow is supplied to the electric motor via the second duct of the pod propulsion device and is withdrawn from the electric motor via the first duct of the pod propulsion device, and thereafter during a second limited time period the forced cooling air flow is supplied to the electric motor via the first duct of the pod propulsion ...

SYSTEM HAVING AN ELECTRIC MACHINE WITH A CRYOGENIC COMPONENT, AND A METHOD FOR OPERATING THE SYSTEM

The disclosure relates to a system having an electric machine with a superconductive component cooled using a cryogenic liquid, and in particular to the full utilization of the refrigeration power available from vaporization of the cryogenic coolant. The system also has a fuel cell, in which an operating medium may be reacted to provide electrical energy. The coolant is fed in liquid form to the superconductive component to cool the component, utilizing the vaporization enthalpy of the coolant. The coolant is then fed in gaseous form to a further component of the machine to cool the component, utilizing the heating enthalpy of the coolant. The now heated coolant is fed to the fuel cell, which uses the coolant supplied to the fuel cell as an operating medium and reacts it. 1. A method for operating a system comprising a cryogenic electric machine having a cryogenic component , a first cooling system assigned to the cryogenic component , a further component , and a second cooling system assigned to the further component , the method comprising:supplying a cryogenic coolant from a reservoir in a liquid state to the first cooling system and to the cryogenic component of the electric machine in order to cool the cryogenic component to a cryogenic temperature, wherein at least a portion of the coolant vaporizes;subsequently supplying the coolant in a liquid state, a gaseous state, or a liquid and gaseous state to the second cooling system and to the further component of the electric machine in order to cool down the further component, using a remaining cooling capacity of the coolant; andsubsequently providing the coolant by the electric machine to a consumer, wherein the coolant is configured to be used by the consumer as an operating medium.2. The method of claim 1 , wherein the cryogenic component is cooled using at least a portion of a vaporization enthalpy of the liquid coolant claim 1 , andwherein the further component is cooled down using at least a portion of a ...

COOLING FAN FOR REFRIGERANT COOLED MOTOR

An electric motor for a vapor compression system is disclosed. The electric motor is provided with a working fluid. The electric motor includes a housing forming cavity therein. The housing includes a rotor, a stator, and a shaft. The rotor is secured to the shaft and the stator surrounds at least a portion of the rotor. An airgap is formed between the rotor and the stator. An inlet of the housing receives the working fluid and is in fluid communication with the airgap. An outlet of the housing is in fluid communication with the airgap and receives the working fluid from the airgap. The electric motor further includes an impeller that induces flow of the working fluid between the inlet and the outlet. 1. An electric motor for a vapor compression system , the electric motor being provided with a working fluid , the electric motor comprising: a rotor, a stator, and a shaft, wherein the rotor is secured to the shaft and the stator surrounds at least a portion of the rotor;', 'an airgap formed between the rotor and the stator;', 'an inlet that receives the working fluid and is in fluid communication with the airgap;', 'an outlet that is in fluid communication with the airgap and receives the working fluid from the airgap; and', 'an impeller that induces flow of the working fluid between the inlet and the outlet., 'a housing forming cavity therein, the housing including2. The electric motor according to claim 1 , wherein the impeller is disposed on an upstream side of the rotor and the stator and is configured to push the working fluid from the inlet to the outlet.3. The electric motor according to claim 1 , wherein the impeller is disposed on a downstream side of the rotor and the stator and is configured to pull the working fluid from the inlet to the outlet.4. The electric motor according to claim 1 , further comprising a second impeller claim 1 , wherein the impeller is disposed on an upstream side of the rotor and the stator.5. The electric motor according to claim ...

COIL, ROTATING ELECTRICAL MACHINE, AND LINEAR MOTOR

This disclosure discloses a coil. An outer shape of the coil as viewed from the first direction has an approximately rectangular shape or an approximately square shape with four corner parts. The coil includes at least one parallel part extended parallelly along the circumferential direction, and at least one connecting part arranged at a portion corresponding to any of the four corner parts, the at least one connecting part being extended along a diagonal direction with respect to the circumferential direction to connect the two parallel parts. 1. A coil including a plurality of wound parts formed by winding a conductor by one turn approximately along a predetermined circumferential direction from a starting point to an ending point , the plurality of wound parts being arranged along a first direction perpendicular to the circumferential direction , an outer shape of the coil as viewed from the first direction has an approximately rectangular shape or an approximately square shape with four corner parts , the coil comprising:at least one parallel part extended parallelly along the circumferential direction; andat least one connecting part arranged at a portion corresponding to any of the four corner parts, the at least one connecting part being extended along a diagonal direction with respect to the circumferential direction to connect the two parallel parts.2. The coil according to claim 1 , wherein;portions corresponding to two pairs of two sides facing each other in the approximately rectangular shape or the approximately square shape of the outer shape of the coil except for the four corner parts are pressure molded.3. The coil according to claim 2 , further comprising:a first protruding part corresponding to a winding start that projects toward the outside of the coil along the first direction; anda second protruding part corresponding to a winding end that projects toward the outside of the coil along the first direction, andthe first protruding part and the ...

Stator for Rotary Electric Machine and Associated Rotary Electric Machine

The stator for rotary electric machine comprises a stator frame and a cylindrical magnetic mass inserted in the stator frame, the magnetic mass including a plurality of stacks of compacted magnetic sheets and longitudinal channels uniformly distributed over at least one diameter of the magnetic mass, the channels leading to each side of the magnetic mass.At least three bundles of compacted magnetic sheets are separated by spacers forming two discharge pipes extending circumferentially and radially between the stator frame and a central housing of the rotary electric machine and communicating with the channels, the stator frame comprising at least two discharge openings connected to different pipes such that a fluid injected on either side of the magnetic mass escapes from the stator via the discharge pipes, the fluid passage section of the discharge pipes being configured to modify the temperature distribution in the magnetic mass.

Rotating Electrical Machine

The invention provides a rotating electrical machine system in which an air volume of a refrigerant is increased near the center of a rotating electrical machine in the axial direction is improved. The rotating electrical machine includes a rotor and a stator, in which the stator core, laminated electromagnetic steel sheets formed by laminating a plurality of electromagnetic steel sheets in the axial direction are divided into a plurality of sets of packet cores, and between one of the packet cores of the plurality of sets and another packet core adjacent to it, there is formed a duct providing a flow channel of the stator, and in a duct situated at the center side from both ends in the axial direction among the duct, there is a portion of two packet cores facing each other across the duct, a diameter direction length of the two packet cores becoming long. 1. A rotating electrical machine including a rotor and a stator ,wherein the stator includes a coil and a stator core,the coil is disposed in a circumferential direction of the stator,in the stator core, laminated electromagnetic steel sheets formed by laminating a plurality of electromagnetic steel sheets in an axial direction are divided into a plurality of sets of packet cores, and between one of the packet cores of the plurality of sets and an adjacent, other packet core, there is formed a duct providing a flow channel to cause a refrigerant to flow in a diameter direction of the stator,the packet core and the duct are configured to be alternately arranged in an axial direction, and,the duct is configured so that a cross-sectional area of the flow channel on an inflow side of the refrigerant is larger than that on an outflow side.2. A rotating electrical machine including a rotor and a stator ,wherein the stator includes a coil and a stator core,the coil is disposed in a circumferential direction,in the stator core, laminated electromagnetic steel sheets formed by laminating a plurality of electromagnetic ...

Media transport in rotor shaft

A rotor hollow shaft for a rotor of an electric machine may include a cylinder barrel that is closed off on both sides by end flanges. On each side, a shaft journal may be positioned or formed on the end flanges. At least one of the shaft journals may include an access bore that provides access to a shaft cavity surrounded by the cylinder barrel. A leadthrough element may be fitted into the access bore so as to impart a sealing action with respect to the shaft cavity. The leadthrough element may extend through the shaft cavity to the shaft journal on the other side of the cylinder barrel, where the leadthrough element may likewise be fitted so as to impart a sealing action with respect to the shaft cavity. The leadthrough element may permit the leadthrough of a liquid or gaseous medium.

OIL DISTRIBUTION ELEMENT

A hollow rotor shaft for a rotor of an electrical machine may include a cylinder barrel closed off by face flanges on both sides. The cylinder barrel may enclose a shaft cavity. A shaft journal may be configured on each face flanges. An inlet may be disposed in one of the shaft journals by way of which a cooling fluid may pass into the shaft cavity and onto an inner surface of the cylinder barrel. A distribution element may be disposed in the shaft cavity. The distribution element may receive the cooling fluid that enters through the inlet, conduct the cooling fluid in a direction of the inner surface of the cylinder barrel by way of a rotation-symmetrical drainage surface, and give off the cooling fluid to the inner surface by way of a mouth region. 112-. (canceled).13. A hollow rotor shaft for a rotor of an electric machine , the hollow rotor shaft comprising:a cylinder barrel enclosing a shaft cavity and closed off on a first side by a face flange and closed off on a second side by a face flange, wherein a shaft journal is disposed or formed on each of the face flanges;an inlet disposed in one of the face flanges that permits a cooling fluid to pass into the shaft cavity and to an inner surface of the cylinder barrel; and receive the cooling fluid that enters by way of the inlet,', 'conduct the cooling fluid in a direction of the inner surface of the cylinder barrel by way of a drainage surface, and', 'provide the cooling fluid to the inner surface by way of a mouth region of the drainage surface., 'a distribution element disposed in the shaft cavity, wherein the distribution element is configured to'}14. The hollow rotor shaft of wherein the drainage surface of the distribution element comprises a conical funnel having a smooth inner surface that is straight or arched claim 13 , with the conical funnel opening into the shaft cavity at an opening angle.15. The hollow rotor shaft of wherein the inlet comprises multiple inlet channels that are evenly distributed ...

ELECTROMAGNETIC COUPLING FOR ESP MOTOR

A pumping system deployable in a wellbore includes a primary driven component, a secondary driven component and a motor. The motor is filled with a motor lubricant and includes a stator, a primary rotor assembly configured for rotation within the stator and a primary shaft connected to the primary rotor assembly and to the primary driven component. The motor further includes an internal magnetic coupling assembly inside the stator. The internal magnetic coupling assembly includes a secondary rotor assembly and a secondary shaft. The secondary rotor assembly and the secondary shaft are isolated from the motor fluid. 1. A motor for use in a pumping system , the motor comprising:a stator;a primary rotor assembly configured for rotation within the stator;a primary shaft connected to the primary rotor assembly; and a secondary rotor assembly; and', 'a secondary shaft, connected to the secondary rotor assembly., 'an internal magnetic coupling assembly inside the stator, wherein the internal magnetic coupling assembly comprises2. The motor of claim 1 , wherein the internal magnetic coupling assembly further comprises:an impermeable liner in contact with an interior surface of the stator; anda stand off connected to the liner.3. The motor of claim 2 , wherein the secondary rotor assembly is located within the liner.4. The motor of claim 2 , wherein the secondary shaft is located within the stand off.5. The motor of claim 2 , further comprising a cap connected to the liner.6. A pumping system deployable in a wellbore claim 2 , the pumping system comprising:a primary driven component;a secondary driven component; and a stator;', 'a primary rotor assembly configured for rotation within the stator;', 'a primary shaft connected to the primary rotor assembly and to the primary driven component; and', a secondary rotor assembly;', 'a secondary shaft connected between the secondary rotor assembly and the secondary driven component; and', 'wherein the secondary rotor assembly and ...

MAGNETIC FIELD GENERATING DEVICE AND SUPERCONDUCTING ROTARY MACHINE COMPRISING MAGNETIC FIELD GENERATING DEVICE

A magnetic field generating device includes a superconducting coil formed by winding a superconductive wire material; an unseparated conductor plate which includes an electric conductor and is placed such that the conductor plate is insulated from the superconducting coil and is adjacent to the superconducting coil in a winding axis direction of the superconducting coil, and one of main surfaces of the conductor plate faces the superconducting coil; and a protection circuit which is connected in parallel with the superconducting coil and attenuates a current flowing through the superconducting coil. 1. A magnetic field generating device comprising:a superconducting coil formed by winding a superconductive wire material;an unseparated conductor plate which comprises an electric conductor and is placed such that the conductor plate is insulated from the superconducting coil and is adjacent to the superconducting coil in a winding axis direction of the superconducting coil, and one of main surfaces of the conductor plate faces the superconducting coil; anda protection circuit which is connected in parallel with the superconducting coil and attenuates a current flowing through the superconducting coil.2. The magnetic field generating device according to claim 1 ,wherein the unseparated conductor plate covers an entire surface of the superconducting coil when viewed from the winding axis direction of the superconducting coil.3. The magnetic field generating device according to claim 1 ,wherein when the winding axis direction of the superconducting coil is a vertical direction, the unseparated conductor plate is placed such that one unseparated conductor plate is located on each of upper and lower sides of the superconducting coil.4. The magnetic field generating device according to claim 1 ,wherein the magnetic field generating device comprises a plurality of superconducting coils;wherein the plurality of superconducting coils are stacked together such that their winding ...

Inspection device for a machine

An electric machine such as for example, an electric generator, is provided having a lock system which enables a monitoring device to be housed in the machine such that the generator is not required to be purged. The machine, which can be filled with a gas, with a housing, wherein a first chamber is arranged on the housing, wherein a first flap valve is arranged between the housing and the first chamber, creating a fluidic connection between said housing and first chamber, and a second chamber which is arranged on the first chamber, wherein a second flap valve is arranged between the first and the second chambers, creating a fluidic connection between said first chamber and second chamber, wherein a monitoring device for inspection purposes is provided in the housing.

COOLING DEVICE FOR ROTARY ELECTRIC MACHINE

A rotary electric machine includes a stator extending along an axis and having teeth arranged about the axis. The teeth are circumferentially spaced apart by slots. Conductors extend around the teeth and through the slots. The conductors are electrically connected to one another to form phases. A cooling device is provided in at least one winding slot. The cooling device includes an outer tube and an inner tube provided in the outer tube such that cooling fluid flows in a first axial direction within the inner tube and a second axial direction opposite the first axial direction within the outer tube. 1. A rotary electric machine comprising:a stator extending along an axis and having teeth arranged about the axis, the teeth being circumferentially spaced apart by slots;conductors extending around the teeth and through the slots, the conductors being electrically connected to one another to form phases; anda cooling device provided in each slot, the cooling device including an outer tube and an inner tube provided in the outer tube such that cooling fluid flows in a first axial direction within the inner tube and a second axial direction opposite the first axial direction within the outer tube.2. The rotary electric machines recited in claim 1 , wherein the cooling device is positioned circumferentially between the conductors in the slot.3. The rotary electric machine recited in claim 2 , wherein the conductors in the slot are part of the same winding.4. The rotary electric machine recited in further comprising a liner formed from a thermally conductive material extending around the cooling device and circumferentially between the conductors.5. The rotary electric machine recited in further comprising a tab including a stack of laminations formed from thermally conductive material secured to the outer tube and positioned circumferentially between the conductors in the slot.6. The rotary electric machine recited in claim 1 , wherein the outer and inner tubes are made ...

GEAR STABILIZATION TECHNIQUES

A balanced planetary gearbox including an assembly having an input stage and an output stage. The assembly includes two grounds, each with ground rollers and ground rings. The two grounds are fixedly attached to one another. The assembly includes a sun gear and planet sub-assemblies between the two grounds. The planet sub-assemblies include at least one input planet gear and one output planet gear. The sun gear and the input planet gears include rollers. An abutment of rollers in the gearbox keeps the sun gear and the planet gears in alignment. The output gear meshes with an output ring disposed in between the two ground rings, such that a combination of the at least one input planet gears from each of the plurality of planet sub-assemblies provides a structural symmetry to the planetary gearbox. 1. A balanced planetary gearbox including an assembly having an input stage and an output stage , the assembly comprising:a first ground, the first ground including a first ground ring and a first ground ring roller;a second ground, the second ground including a second ground ring and a second ground ring roller, the second ground fixedly connected to the first ground;a sun gear sub-assembly disposed between the first ground and the second ground, the sun gear sub-assembly including a sun gear and a sun roller, the sun gear including a first plurality of sun gear teeth and a second plurality of sun gear teeth;a plurality of planet sub-assemblies disposed to interface with and revolve around the sun gear sub-assembly and within the first ground ring and the second ground ring, each planet sub-assembly comprising at least one input planet gear and one output planet gear, each of the input gears including input gear teeth meshing with at least the first plurality of sun gear teeth or the second plurality of sun gear teeth, the at least one input planet gear including an input planet roller, the output gear coupled with at least one input planet gear, the output gear disposed ...

ELECTRIC COMPRESSOR

Disclosed herein is an electric compressor. The electric compressor includes an inverter cover which is mounted to an outer surface of a compressor housing in which compression of refrigerant is implemented, and a printed circuit board which is disposed inside the inverter cover and mounted with a plurality of heat generating elements that come into surface contact with one surface of the compressor housing and perform heat transfer with low-temperature refrigerant supplied into the compressor housing. 1. An electric compressor comprising:{'b': 100', '2, 'an inverter cover () mounted to an outer surface of a compressor housing () in which compression of refrigerant is implemented; and'}{'b': 200', '100', '202', '2', '2, 'a printed circuit board () disposed inside the inverter cover () and mounted with a plurality of heat generating elements () that come into surface contact with one surface of the compressor housing () and perform heat transfer with low-temperature refrigerant supplied into the compressor housing ().'}2. The electric compressor according to claim 1 , wherein{'b': 200', '202, 'when it is assumed that a distance between a lower surface of the printed circuit board () and a lower surface of each of the heat generating elements () is L1, and'}{'b': 200', '2, 'when it is assumed that a distance between the lower surface of the printed circuit board () and the one surface of the compressor housing () is L2,'}the distance L1 is greater than the distance L2.3100. The electric compressor of claim 1 , wherein the inverter cover () comprises:{'b': 102', '100', '200, 'a heat absorption part () formed on an inner surface of the inverter cover () so as to absorb high-temperature heat generated from the printed circuit board ().'}4. The electric compressor according to claim 1 , further comprising:{'b': 300', '2', '200, 'a fastening unit () fixed to the compressor housing () from an outside of the printed circuit board ().'}5300. The electric compressor according ...

ENERGY CONVERSION APPARATUS

Energy conversion apparatus comprising: an electrical machine including a rotor arranged to rotate about an axis, the rotor defining a first cavity therein; power electronic circuitry arranged at least partially around the axis and defining a second cavity therein, the power electronic circuitry being positioned adjacent to the electrical machine; a heat pipe positioned within the first cavity of the rotor and within the second cavity defined by the power electronic circuitry, the heat pipe being arranged to receive thermal energy from the rotor; and a cooling arrangement positioned at least partially within the second cavity and arranged to receive thermal energy from the power electronic circuitry and from the heat pipe. 1. Energy conversion apparatus comprising:an electrical machine including a rotor arranged to rotate about an axis, the rotor defining a first cavity therein;power electronic circuitry arranged at least partially around the axis and defining a second cavity therein, the power electronic circuitry being positioned adjacent to the electrical machine;a heat pipe positioned within the first cavity of the rotor and within the second cavity defined by the power electronic circuitry. the heat pipe being arranged to receive thermal energy from the rotor; anda cooling arrangement positioned at least partially within the second cavity and arranged to receive thermal energy from the power electronic circuitry and from the heat pipe.2. Energy conversion apparatus as claimed in claim 1 , wherein the cooling arrangement comprises: an inlet to receive a cooling fluid; and an outlet to output the cooling fluid claim 1 , the second cavity being arranged to receive the cooling fluid from the inlet and to provide the cooling fluid to the outlet.3. Energy conversion apparatus as claimed in claim 2 , wherein the cooling arrangement comprises a pump to cause the cooling fluid to flow from the inlet to the outlet.4. Energy conversion apparatus as claimed in claim 2 , ...

ELECTRICAL MACHINE

An electrical machine includes a stator, a rotor comprising a shaft, and at least one heat-conducting element. The rotor is arranged at least partially inside the stator. The shaft includes at least one opening on at least one front side and an axis of rotation. The at least one opening extends in one direction along the axis of rotation of the shaft. The at least one heat-conducting element is arranged in the at least one opening of the shaft. The at least one heat-conducting element is at least partially made of a material having a thermal conductivity which is higher than a material of the shaft. 119-. (canceled)20. An electrical machine comprising:a stator;a rotor comprising a shaft, the rotor being arranged at least partially inside the stator, the shaft comprising at least one opening on at least one front side and an axis of rotation, the at least one opening extending in one direction along the axis of rotation of the shaft; andat least one heat-conducting element arranged in the at least one opening of the shaft,wherein,the at least one heat-conducting element is at least partially made of a material having a thermal conductivity which is higher than a material of the shaft.21. The electrical machine as recited in claim 20 , wherein the at least one opening extends parallel to the axis of rotation of the shaft.22. The electrical machine as recited in claim 20 , wherein the at least one opening and the at least one heat-conducting element arranged therein have a same cross-sectional shape.23. The electrical machine as recited in claim 22 , wherein the at least one heat-conducting element is arranged to loosely fit into the at least one opening.24. The electrical machine as recited in claim 20 , wherein claim 20 ,the shaft comprises at least two openings, andat least one of the at least one heat-conducting element is arranged in each of the at least two openings.25. The electrical machine as recited in claim 24 , wherein the at least two openings are arranged ...

MOTOR COOLING METHOD FOR A COMPRESSOR

A method for cooling a compressor motor () and a cooling circuit utilizing refrigerant that originates in the condenser () to cool a motor () and electromagnetic bearings (). The motor drives a compressor (), while the electromagnetic bearings support the motor rotor () during operation of the compressor. Liquid refrigerant from the condenser is expanded into a two-phase mixture, passed over the stator, expanded a second time, passed over the bearings and between the stator and rotor, before being returned to an evaporator (). 1170194204196206170174190176174178176. A cooling circuit for a compressor motor () and bearings ( , , , ) , the compressor motor () comprising a motor housing () with a cavity () that includes a stator () positioned within the housing () and a rotor () within the stator () , and bearings centering the rotor within the stator , wherein the cooling circuit is characterized by:{'b': 172', '174', '170, 'a motor inlet () in the motor housing () providing refrigerant liquid to the motor ();'}{'b': 180', '176', '174, 'a spacer () extending 360° around the stator () and positioned between the motor housing () and the stator;'}{'b': 180', '176', '172', '176', '174, 'a gap between the spacer () and the stator () through which refrigerant liquid from the motor inlet () passes, the refrigerant liquid removing heat from the stator () and the motor housing () as the refrigerant changes state from liquid to a gas fluid;'}{'b': 222', '174', '176', '182, 'an alignment pin () extending through the motor housing () and the stator (), preventing relative rotation of the motor housing, the stator and the spacer ();'}{'b': '186', 'an expansion device () reducing the pressure of refrigerant fluid while converting it to a two phase mixture;'}{'b': 188', '186, 'a first fluid passageway () that provides communications between refrigerant in the gap and the expansion device ();'}{'b': 192', '186', '174, 'a second fluid passageway () that receives two phase refrigerant ...

COOLING ARRANGEMENT USING AN ELECTROCHEMICAL CELL

An example generator cooling arrangement includes an electrochemical hydrogen pump configured to receive and adjust a fluid containing hydrogen and to provide a refined supply of hydrogen. An electric power generator receives the supply of hydrogen. The refined supply of hydrogen is used to remove thermal energy from the electric power generator. 1. A generator cooling arrangement , comprising:an electrochemical hydrogen pump comprising a polymer electrolyte membrane through which hydrogen ions are transported, an anode plate having anode channels and a cathode plate having cathode channels, at least one of the anode plate and the cathode plate having coolant channels through which the polymer electrolyte membrane is hydrated, the coolant channels connected to a coolant loop, wherein the electrochemical hydrogen pump is configured such that a pressure of water flowing in the coolant channels is maintained at a lower pressure than a pressure of a gas in either of the anode channels or the cathode channels of the electrochemical hydrogen pump during operation, and wherein the electrochemical hydrogen pump is configured to receive and adjust a fluid stream containing gaseous hydrogen, and to provide a refined supply of hydrogen in a more refined state than the fluid stream received by the electrochemical hydrogen pump;an electric power generator that receives the refined supply of hydrogen, wherein the refined supply of hydrogen is used to remove thermal energy from the electric power generator, and wherein impurities are introduced into the refined supply of hydrogen as the refined supply of hydrogen is used to remove the thermal energy from the electric power generator via direct contact of the refined supply of hydrogen with the electric power generator, wherein the electrochemical hydrogen pump receives the fluid stream containing gaseous hydrogen with impurities entrained therein from the electric power generator; anda vent in fluid communication with the ...

ELECTRIC MOTOR DRIVE INTEGRATION

An electric motor includes a rotor, a stator, and a motor drive. The rotor is adapted to rotate about a rotation axis. The stator is axially aligned to the rotor, and is centered to the rotation axis. One of the rotor and the stator radially defines an inner cavity, which is axially aligned to the rotor and the stator. The motor drive includes electronic elements disposed at least in-part in the cavity. 1. An electric motor comprising:a rotor adapted to rotate about a rotation axis;a stator axially aligned to the rotor and centered to the rotation axis, wherein one of the rotor and the stator radially define an inner cavity axially aligned to the rotor and the stator; anda motor drive including electronic elements disposed at least in-part in the inner cavity.2. The electric motor set forth in claim 1 , wherein the rotor is a dual rotor including an inner rotor segment and an outer rotor segment disposed radially outward from the inner rotor segment claim 1 , and the inner cavity being radially defined by the inner rotor segment.3. The electric motor set forth in claim 2 , wherein the stator is radially disposed between the inner and outer rotor segments.4. The electric motor set forth in claim 3 , wherein the stator is a coreless stator.5. The electric motor set forth in claim 1 , wherein the motor drive is completely disposed in the inner cavity.6. The electric motor set forth in claim 5 , wherein the motor drive includes a circuit board.7. The electric motor set forth in claim 3 , further comprising:a stationary shaft disposed in the inner cavity, extending along the rotation axis, and spaced radially inward from the inner rotor segment; anda mounting plate axially defining the inner cavity, attached to the stationary shaft, and adapted to support the stator.8. The electric motor set forth in claim 7 , wherein the motor drive is directly supported by the mounting plate.9. The electric motor set forth in claim 7 , wherein the motor drive is directly supported by ...

Embedded permanent magnet rotary electric machine

Ventilation apertures are respectively formed circumferentially so as to pass axially through an inner circumferential side of a rotor core, rotor grooves are respectively formed circumferentially on an outer circumferential surface of the rotor core so as to have groove directions in an axial direction, and a centrifugal fan is fixed to the shaft at an end of the rotor core near the front frame, and a cyclic path is formed in which, during operation of the centrifugal fan, cooling air flows into the ventilation apertures from near a rear frame, passes through the ventilation apertures and flows out near the front frame, flows radially outward near the front frame and flows into the rotor grooves, passes through the rotor grooves and flows out near the rear frame, and flows radially inward near the rear frame and flows into the ventilation apertures.

MOTOR HAVING INTERNAL COOLANT SUPPLY PASSAGE

The motor includes: a rotor; an enclosure member H having a front housing, a rear housing, and a stator surrounding the rotor; an output shaft-side coolant supply port arranged on the outer circumference of the enclosure member, output shaft-side coolant supply paths that supply coolant from the output shaft-side coolant supply port to an output shaft side; an counter-output shaft-side coolant supply port arranged on the outer circumference of the enclosure member; counter-output shaft-side coolant supply paths that supply coolant from the counter-output shaft-side supply port to the counter-output shaft side; a temperature measurement unit that measures the temperature of the enclosure member; switching parts that switch between a plurality of coolants based on the temperature of the enclosure member measured by the temperature measurement unit; and coolant flow paths that connect the output shaft-side coolant supply port and counter-output shaft-side coolant supply port to the switching parts. 1. A motor comprising:a rotor supported by an output shaft-side bearing and a counter-output shaft-side bearing;an enclosure member including a front housing supporting the output shaft-side bearing, a rear housing supporting the counter-output shaft-side bearing, and a stator to which the front housing and the rear housing are installed at both ends and surrounding the rotor;an output shaft-side coolant supply port disposed at an outer circumference of the enclosure member;an output shaft-side coolant supply path that supplies coolant from the output shaft-side coolant supply port to an output shaft side;a counter-output shaft-side coolant supply port disposed at an outer circumference of the enclosure member;a counter-output shaft-side coolant supply path that supplies coolant from the counter-output shaft-side coolant supply port to a counter-output shaft side;a temperature measurement unit that measures a temperature of the enclosure member;a switching part that switches ...

LINEAR MOTOR

A linear motor (), including a mover and a stator, the mover having a cylindrical body () that forms an elongate circular bore () and the stator being an elongate shaft disposed within the bore. The cylindrical body () includes a plurality of electrical windings () and the shaft includes a synchronous or variable reluctance topology, or a plurality of magnets. Electrical energising of the windings () results in relative movement and/or force generation between the cylindrical body () and the shaft. The cylindrical body () being disposed within a housing () with a coolant space () being formed between the cylindrical body () and an internally facing cylindrical surface () of the housing (). The coolant space () being formed along at least a major portion of the length of the cylindrical body () and the coolant space () being substantially cylindrical and of substantially constant cross-section. 1. A linear motor , including a mover and a stator , the mover having a cylindrical body that forms an elongate circular bore and the stator being an elongate shaft disposed within the bore , the cylindrical body including a plurality of electrical windings and the shaft including a synchronous or variable reluctance topology , or including a plurality of magnets , whereby electrical energising of the windings results in relative movement and/or force generation between the cylindrical body and the shaft , the cylindrical body being disposed within a housing with a coolant space being formed between the cylindrical body and an internally facing cylindrical surface of the housing , the coolant space being formed along at least a major portion of the length of the cylindrical body , the coolant space being substantially cylindrical and of substantially constant cross-section.2. A linear motor according to claim 1 , the cylindrical body including a cylinder and the windings being located within the cylinder claim 1 , the coolant space being formed on the opposite side of the ...

SLIP RING, SLIP RING UNIT, ELECTRIC MACHINE, AND WIND TURBINE

A slip ring includes an essentially cylindrical contact region defined by a radius and having a contact region which faces in a radially outwards direction. The contact region has a recess in a region of the contact surface, with the recess configured to have a projection extending on an inner side of the recess and/or being interrupted in a tangential direction. The contact region has an annular surface formed with an opening which communicates with the recess and extends towards an axial direction at an incline at an interval of 5 degrees to 45 degrees with respect to a normal of the annular surface. At least two insulating regions are arranged axially adjacent to the contact region and each being defined by a radius, with the radius of the contact region being larger than the radius of the insulating region. 19.-. (canceled)10. A slip ring , in particular for a rotor having windings of an electric machine , in particular for use in a wind turbine , said slip ring comprising:an essentially cylindrical contact region defined by a radius and having a contact surface which faces in a radially outwards direction, said contact region having a recess in a region of the contact surface, said recess configured to have a projection extending on an inner side of the recess and/or being interrupted in a tangential direction, said contact region having an annular surface formed with an opening which communicates with the recess and extends towards an axial direction at an incline at an interval of 5 degrees to 45 degrees with respect to a normal of the annular surface; andat least two insulating regions arranged axially adjacent to the contact region and each being defined by a radius, with the radius of the contact region being larger than the radius of the insulating region.11. The slip ring of claim 10 , wherein the projection is configured to guide an airflow in a radial direction.12. The slip ring of claim 10 , wherein the recess is positioned in a region of an axial ...

METHODS AND SYSTEMS FOR DRYING HYDROGEN GAS USED IN HYDROGEN-COOLED GENERATORS

A hydrogen gas dryer or system for drying or removing water from hydrogen gas for use in hydrogen-cooled generators includes a drying tower or column comprising a housing, a heater, a desiccant, and a controller. The system is configurable and operable for regeneration of the saturated column, with activation of the heater to cause water retained in the saturated desiccant to turn into steam such as steam and exit on its own via the vent. A supply of generally dry hydrogen is used to purge the remaining vaporized water from the isolated substantially dry regenerated desiccant. 16-. (canceled)7. A hydrogen gas drying system for use with a hydrogen-cooled generator , said system comprising:a column for containing a desiccant;a heater operable for heating said column and the desiccant;a fluid control device for passing a supply of a portion of the hydrogen gas in the hydrogen-cooled generator through the desiccant and returning the supply of the portion of the hydrogen gas passed through the desiccant to the hydrogen-cooled generator to saturate the desiccant;a controller operable to control said fluid control device to isolate the substantially saturated desiccant from fluid communication with the hydrogen-cooled generator and from the atmosphere;said controller operable to control said heater for heating the substantially saturated desiccant to vaporize water in the isolated desiccant;said controller operable to control venting vaporized water to atmosphere from the isolated saturated desiccant to substantially dry the isolated saturated desiccant;said controller operable to control introduction of a supply of generally dry hydrogen gas to purge remaining vaporized water from the isolated substantially dry desiccant; andsaid controller operable to control said fluid control device to reconnect passage of a supply of a portion of the hydrogen gas in the hydrogen-cooled generator through the substantially dry desiccant and return the supply of the portion of the ...

MOTOR APPARATUS AND CLEANER HAVING THE SAME

A motor apparatus having a high efficiency and reducing manufacturing cost by using a cost effective ferrite permanent magnet includes a rotatable shaft, a fan connected to one side of the shaft to generate a flow of air, a stator including stator cores arranged in a circumferential direction, and a coil wound around the stator core, and a rotor disposed at an inside of the stator and provided in a form of a cylinder having a passage allowing the shaft to pass through the rotor includes a rotor core provided with a protrusion structure and one or more ferrite magnets coupled to the rotor core to provide a magnetic force. By using a ferrite magnet, when compared to a conventional universal motor, a superior efficiency is obtained, and when compared to a BLDC motor using a Nd magnet, a low cost BLDC motor is implemented. 1. A motor apparatus , comprising:a shaft rotatably installed;a fan connected to one side of the shaft to generate a flow of air:a stator including one or more stator cores arranged in a circumferential direction, and a coil wound around the one or more stator cores; anda rotor disposed at an inside of the stator and provided in a form of a cylinder having a passage at a main axis thereof allowing the shaft to pass therethrough,wherein the rotor comprises a rotor core provided with a protrusion structure and one or more ferrite magnets coupled to the rotor core to provide a magnetic force.2. The motor apparatus of claim 1 , wherein:the protrusion structure comprises a plurality of protrusions protruded in a radially outward direction from a center of rotation of the rotor core, to obtain an additional reluctance force while the rotor is being rotated.3. The motor apparatus of claim 2 , wherein:the rotor core is formed to have two protrusions of the plurality of protrusions disposed opposite to each other with respect to the center of rotation of the rotor core.4. The motor apparatus of claim 2 , wherein:each ferrite magnet is coupled between each of ...

COOLING MEDIUM SUPPLY/DISCHARGE DEVICE AND SUPERCONDUCTING ROTARY MACHINE INCLUDING COOLING MEDIUM SUPPLY/DISCHARGE DEVICE

A cooling medium supply/discharge device includes a cylindrical rotary casing which is rotatable with a rotary shaft of the rotor; a cylindrical stationary casing fixed such that the stationary casing extends inward relative to the rotary casing and coaxially with the rotary casing, the stationary and rotary casings being relatively rotatable; a first stationary cylindrical body which is inserted into the stationary casing such that the first stationary cylindrical body is not rotatable; a first rotary cylindrical body which is inserted into the first stationary cylindrical body with a gap such that the first rotary cylindrical body is rotatable together with the rotary shaft; a second stationary cylindrical body which is inserted into the first stationary cylindrical body such that the second stationary cylindrical body is not rotatable; and a second rotary cylindrical body which is inserted into the first rotary cylindrical body and rotatable together with the rotary shaft. 1. A cooling medium supply/discharge device of a superconducting rotary device , the cooling medium supply/discharge device being placed between a refrigerating device and a rotor including a superconducting coil in the superconducting rotary device , to supply a gaseous supply cooling medium which is supplied from the refrigerating device to the rotor and return a gaseous return cooling medium returned from the rotor to the refrigerating device , the cooling medium supply/discharge device comprising:a cylindrical rotary casing which is rotatable together with a rotary shaft of the rotor;a cylindrical stationary casing fixed such that the stationary casing extends inward relative to the rotary casing and coaxially with the rotary casing and relative rotation between the stationary casing and the rotary casing via a bearing is allowed to occur;a first stationary cylindrical body which is inserted into the stationary casing such that the first stationary cylindrical body is not rotatable;a first ...

ELECTRICAL MACHINE

An electrical machine includes a stator containing bearing plates and windings conducting electrical current and the rotor. The stator has windings conducting electric current embedded in a composite material and shaped into winding segments forming a ring segment of an angular span constituting a part of the full angle. The segments are inserted between the external and internal discs of the rotor. The magnetic poles are embedded and magnetised towards the axial direction of internal discs. The poles are separated from each other with a spacing made of a non-magnetic composite material of the internal and external discs structure/Each external and internal disc has an external reinforcing ring, made of a non-magnetic composite material reinforced with fibres of strength exceeding 1 GPa, formed by winding the fibres together with resin on the cylindrical surface of the discs. The external discs have a ring closing the magnetic circuit. 1. An electrical machine consisting of the stator with bearing plates , windings conducting electric current , a rotor , and external discs and internal discs of the rotor , in which magnetic poles are embedded and magnetised towards the axial direction of the internal discs , consisting of at least one permanent magnet , wherein a segments are inserted between external discs and internal discs of the rotor , wherein the stator comprises windings conducting electric current embedded in a composite material and shaped into winding segments forming a section of a ring with the angular span ranging within the full angle , wherein the total multiplicity of this section gives a full angle , i.e. e.g. 180 degrees , 120 degrees , 90 degrees , etc. , wherein the external discs and the internal discs are made of non-magnetic composite and reinforced with fibres of strength exceeding 1 GPa , whereas the magnetic poles are separated from each other with a spacing made of a non-magnetic composite material and of the internal and external discs ...

POWER TOOL HAVING AN ELONGATED HOUSING SUPPORTING A POWER MODULE

A power tool is provided including an elongated housing. The housing includes a motor case disposed at a front end thereof and a handle portion extending along a longitudinal axis of the housing from the motor case to a rear end of the housing. The handle portion includes two elongated walls extending from motor along the longitudinal axis of the housing to form a planar opening within the handle portion. A partition wall is arranged along an axis substantially perpendicular to the longitudinal axis of the housing, separating the handle portion from the motor case. An electric motor having a drive shaft is mounted within the motor case, and a module casing supporting a planar circuit board is received within the planar opening and supported by the elongated walls within the handle portion of the housing axially along the longitudinal axis of the housing. 1. A power tool comprising:an elongated housing, where the housing includes a motor case disposed at a front end thereof and a handle portion extending along a longitudinal axis of the housing from the motor case to a rear end of the housing, wherein the handle portion includes two elongated walls extending from motor along the longitudinal axis of the housing to form a planar opening within the handle portion;a partition wall arranged along an axis substantially perpendicular to the longitudinal axis of the housing, the partition wall separating the handle portion from the motor case;an electric motor having a drive shaft and mounted within the motor case; anda module casing supporting a planar circuit board received within the planar opening and supported by the elongated walls within the handle portion of the housing, the module casing extending axially along the longitudinal axis of the housing, the planar circuit board accommodating a motor drive circuit including a plurality of motor switches arranged to deliver power to the electric motor.2. The power tool of claim 1 , further comprising an output shaft ...

WOUND ROTOR OR STATOR AND METHOD FOR MANUFACTURING SAME

A method for manufacturing a wound rotor or stator having more than four poles, preferably a rotor, the rotor or stator having teeth provided with pole shoes. The method includes the following steps, for each pole: (a) producing a partial winding by winding at least one conductor over the portion of the tooth of this pole extending axially along this pole between the pole shoes of this pole and a plane (P) at right angles to the axis of the pole and tangential to a pole shoe of an adjacent pole, (b) pushing back the duly produced partial winding towards the base of the tooth, and freeing said portion of the tooth having been used for the winding, and (c) repeating step (a) to produce another partial winding on the duly released portion of tooth. 1. A method for manufacturing a wound rotor or stator having more than four poles , the rotor or stator comprising teeth provided with pole shoes , the method comprising the following steps , for each pole:a) producing a partial winding by winding at least one conductor over the portion of the tooth of this pole extending axially along this pole between the pole shoes of this pole and a plane at right angles to the axis of the pole and tangential to a pole shoe of an adjacent pole,b) pushing back the duly produced partial winding towards the base of the tooth, and freeing said portion of the tooth having been used for the winding,c) repeating the step a) to produce another partial winding on the duly released portion of tooth.2. The method according to claim 1 , comprising the placing of a spacer between the partial windings of one and the same pole.3. The method according to claim 1 , the rotor or stator having six poles.4. The method according to claim 1 , the rotor or stator being wound pole after pole.5. The method according to claim 1 , each pole comprising only two partial windings.6. A rotor or stator of a rotating electrical machine with four or more poles claim 1 , comprising:teeth provided with pole shoes,at least ...

Stator assembly for an electric generator with accommodation space

A stator assembly is provided including (a) an inner frame structure having an annular shape with an inner circumferential edge and an outer circumferential edge, wherein the inner frame structure is formed around a center axis corresponding to an axial direction of the electric generator; and (b) an outer frame structure, which surrounds the inner frame structure and which, starting from the outer circumferential edge, includes two inclined annular walls which, along a radial direction, spread apart from each other such that in between a first inclined annular wall and the second inclined annular wall there is formed an accommodation space. Preferably, the inner frame structure and the outer frame structure are made from a single piece.

ROTARY ELECTRIC MACHINE

In a rotary electric machine having a cooling structure for cooling a stator and a rotor by circulating a cooling gas, a gas cooling unit is disposed above, below, or beside the side surface of a casing in which the stator and the rotor are accommodated and a heat insulating unit for preventing transfer of heat is provided between a low temperature cooling gas flow path in the gas cooling unit and the casing. 1. A rotary electric machine comprising:a casing in which a stator and a rotor are accommodated; intake ports for a cooling gas provided on both ends and communicating with the casing,', 'a high temperature cooling gas flow path through which the cooling gas at high temperature sucked from the intake ports passes,', 'a ventilation surface exchanging heat with the cooling gas at high temperature and cooling the cooling gas,', 'a low temperature cooling gas flow path through which the cooling gas having passed through the ventilation surface passes, and', 'exhaust ports for the cooling gas which are provided at both ends and through which the cooling gas at low temperature in the low temperature cooling gas flow path flows to the casing, wherein the ventilation surface is disposed above, below, or beside a side surface of the casing so as to be parallel to a rotary shaft of the rotor;, 'a gas cooling unit including'}a gas cooling unit disposed so that the high temperature cooling gas flow path is away from the casing and the low temperature cooling gas flow path is close to the casing; anda heat insulating unit provided between the low temperature cooling gas flow path of the gas cooling unit and the casing, the heat insulating unit preventing transfer of heat between the low temperature cooling gas flow path and the casing.2. The rotary electric machine according to claim 1 , further comprising:a main lead for transmitting and receiving electric power,wherein the gas cooling unit and the main lead are provided axisymmetrically with respect to the rotary shaft of ...

POWER GENERATION SYSTEM, POWER GENERATION METHOD

This power generation system is provided with a medium circuit, a circulation pump, an evaporator which evaporates a medium, an expander configured to be driven using the medium evaporated by the evaporator, a condenser configured to condense the medium discharged from the expander, a generator configured to be driven by the expander to generate power, a cooling system configured to cool the generator using the medium taken out from the medium circuit at a downstream side of the condenser, and a gas-liquid separator configured to separate the medium heated as a consequence of cooling the generator by the cooling system into gas and liquid phases, wherein the gas phase of the medium is flowed into the medium circuit at an upstream side of the condenser, and the liquid phase of the medium is flowed into the medium circuit at the downstream side of the condenser. 1. A power generation system comprising:a medium circuit through which a medium is circulated;a circulation pump configured to pressurize the medium so as to have the medium circulating through the medium circuit;an evaporator configured to evaporate the medium pressurized by the circulation pump, using heat from a heat source;an expander configured to be driven using the medium evaporated by the evaporator;a condenser configured to condense the medium discharged from the expander;a generator configured to be driven by the expander to generate power;a cooling system configured to cool the generator using the medium taken out from the medium circuit at a downstream side of the condenser; anda gas-liquid separator configured to separate the medium heated as a consequence of cooling the generator by the cooling system into gas and liquid phases, wherein the gas phase of the medium is flowed into the medium circuit at an upstream side of the condenser, and the liquid phase of the medium is flowed into the medium circuit at a downstream side of the condenser.2. The power generation system according to claim 1 , ...

COOLING ARRANGEMENT FOR A PROPULSION UNIT

A propulsion unit is disclosed with a hollow strut having an upper portion with an upper end portion passing through a passage (P) formed between a first outer bottom and a second inner bottom in a vessel. The upper end portion is rotatably supported with a slewing bearing and sealed with a slewing seal towards the vessel. A cooling arrangement includes a cooling air duct system, at least one fan and at least one cooling unit. The slewing seal can include an upper slewing seal and a lower slewing seal at a vertical distance (H) from each other with a space formed between the slewing seals. The upper end portion has openings (O) into the space between the slewing seals. A first cooling air duct is directed to this space, whereby cooling air (L) can be circulated through the first cooling air duct () into the space and through the openings (O) in the upper end portion to the interior of the strut, or return air (L) can be circulated from the strut in an opposite direction.

Internal Ventilation System For An Electric Rotary Machine

A fan rotor of an inner ventilation system of a rotating electrical machine formed by a preferably flat-profiled disc attached concentrically, preferably interconnected, to the axis of the rotating electrical machine and axially attached to the rotor vanes of the rotating electrical machine. 1. An inner ventilation system for a rotating electric machine comprising an engine rotor , a plurality of vanes and a preferably-flat-profiled disc attached to each other , rotating together when the engine rotor is rotated , making the vanes function similarly to the blades of a fan.2. The inner ventilation system according to claim 1 , wherein the profiled disc is a flat-profiled disc comprising a plurality of holes claim 1 , which enable balancing of the rotor of the rotating electrical machine.3. The inner ventilation system according to claim 2 , wherein the preferably flat-profiled disc is manufactured from a metallic material.4. The inner ventilation system according to claim 2 , wherein the flat-profiled disc is manufactured from a non-metallic material.5. The inner ventilation system according to claim 1 , wherein the shape and disposition of the vanes result in a radial fan rotor with straight blades.6. The inner ventilation system according to claim 1 , wherein the shape and disposition of the vanes result in a radial fan rotor with tilted blades.7. The inner ventilation system according to claim 1 , wherein the disc has a flat profile on the region in contact with the vanes.8. The inner ventilation system according to claim 2 , wherein the flat-profiled disc is formed by a single or segmented component. This invention discloses a radial fan rotor of an inner ventilation system of a rotating electrical machine formed by a preferably flat-profiled disc attached concentrically to the axis of the rotating electrical machine and axially attached to the rotor vanes of the rotating electrical machine. In another aspect of the invention, it is disclosed a rotating ...

STATOR FOR ELECTRIC ROTARY MACHINE

A stator for an electric rotary machine includes: a stator core which has plural slots; and segmented coils of a plurality of phases, wherein: the stator core is provided with a base plate at least one side thereof in an axial direction; the segmented coils of the plurality of phases include plural slot coils which are individually disposed in the plural slots of the stator core and which extend substantially linearly, and plural connection coils which are individually disposed in the base plate and which make up bridge portions by connecting the slot coils of a same phase together; the connection coil is accommodated in a connection coil accommodating groove formed on a front surface of the base plate; and the base plate is provided with a communication portion on an outer circumferential surface thereof for communicating with the connection coil accommodating groove. 1. A stator for an electric rotary machine comprising:a stator core which has plural slots; andsegmented coils of a plurality of phases, wherein:the stator core is provided with a base plate at least one side thereof in an axial direction;the segmented coils of the plurality of phases include plural slot coils which are individually disposed in the plural slots of the stator core and which extend substantially linearly, and plural connection coils which are individually disposed in the base plate and which make up bridge portions by connecting the slot coils of a same phase together;the connection coil is accommodated in a connection coil accommodating groove formed on a front surface of the base plate; andthe base plate is provided with a communication portion on an outer circumferential surface thereof for communicating with the connection coil accommodating groove.2. The stator for an electric rotary machine according to claim 1 , wherein:the connection coil includes an inner connection coil and an outer connection coil which are disposed in different positions in the axial direction;the base plate ...

Turbomachine, in particular for a fuel cell system, fuel cell system, method for operating a turbomachine, and method for operating a fuel cell system

Turbomachine (10), in particular for a fuel cell system (1). The turbomachine (10) comprises a compressor (11), a drive device (20) and a shaft (14). The compressor (11) has a rotor (15) arranged on the shaft (14), a compressor inlet (11a) and a compressor outlet (11b). A working fluid can be delivered from the compressor inlet (11a) to the compressor outlet (11b). A drive cooling path (92) for cooling the drive device (20) branches off at the compressor outlet (11b). Also proposed is a fuel cell system (1) with a turbomachine (10) according to the invention, a method for operating the turbomachine (10) and a method for operating the fuel cell system (1).

Dynamo-Electric Machine

The heat dissipation of a coil of a stator is enhanced. A stator of a dynamo-electric machine or a dynamo-electric machine according to the present invention includes: a stator core in which a plurality of slots arranged in the circumferential direction are formed; and a stator coil with an insulating film inserted in the slots in the stator core. The stator coil is composed of a first-layer segment to a fourth-layer segment each of which is formed by arranging a plurality of segment coils in the circumferential direction and which are arranged from the inner radius side to the outer radius side in the radial direction. The first-layer segment and the second-layer segment are displaced from each other by a first amount of displacement in the circumferential direction and connected to each other. The third-layer segment and the fourth-layer segment are displaced from each other by a second amount of displacement different from the first amount of displacement in the circumferential direction and connected to each other. 1. A stator of a dynamo-electric machine , comprising:a stator core with a plurality of slots formed in alignment in the circumferential direction; anda stator coil with an insulating film inserted into the slots in the stator core,wherein the stator coil is composed of a first-layer segment to a fourth-layer segment each of which is formed by arranging a plurality of segment coils in the circumferential direction and which are arranged from the inner radius side to the outer radius side in the radial direction,wherein the first-layer segment and the second-layer segment are displaced from each other by a first amount of displacement in the circumferential direction and connected to each other, andwherein the third-layer segment and the fourth-layer segment are displaced from each other by a second amount of displacement different from the first amount of displacement in the circumferential direction and connected to each other.2. The stator of a ...

DEVICE FOR DRIVING A COMPRESSOR WITH AN INSULATION ARRANGEMENT

An electric motor having has a rotor and a stator with a stator core as well as an insulation assembly, which extend along a common longitudinal axis from a first end face to a second end face of the stator. The stator core is formed with bars arranged uniformly distributed on the circumference to accommodate conducting wires wound into coils. The insulation assembly has a first insulation element, second insulation elements, and a third insulation element. The first insulation element is arranged between conducting wires and the stator core; a respective second insulation element is arranged in an intermediate space formed between coils arranged to fit closely to one another; and the third insulation element is arranged on an inner side of the stator, the inner side pointing inward in the radial direction, in a manner so as to seal the inner side. 1. A device for driving a compressor of a vaporous fluid , particularly an electric motor , the device comprising:a rotor and a stator with a stator core as well as an insulation assembly, which are arranged extending along a common longitudinal axis from a first end face to a second end face of the stator, wherein the stator core is formed with bars uniformly arranged on a circumference for accommodating conducting wires wound into coils, and the insulation assembly has at least one first insulation element, second insulation elements, and at least one third insulation element, wherein the at least one first insulation element is arranged between the conducting wires and the stator core, a respective one of the second insulation elements is arranged in an intermediate space formed between the coils arranged adjacent to one another; and the at least one third insulation element is arranged on an inner side of the stator, the inner side pointing inward in a radial direction in a manner so as to seal the inner side.2. The device according to claim 1 , wherein the intermediate space respectively formed between two of the ...

Electrical machine having cooling features formed in a stator winding

An electrical machine has passages in the coil ends of a stator. The passages have an inlet port and an exit port disposed at different locations. The passages remove heat from the electrical machine during operation. The passages formed in the coil ends can receive a cooling fluid discharged from cooling passages formed in a stator core. Tooling can be used to form the passages. In some embodiments passages are also formed in the rotor. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for electrical machines and the cooling of electrical machine rotors and/or stators.

Motor cooling systems

A system can include a compressor outlet line configured to receive compressor outlet flow from a compressor, a bypass line in fluid communication with the compressor outlet line and a motor outlet line to divert a bypass flow of the compressor outlet flow. The system can include at least one pump in fluid communication between the bypass line and the motor outlet line such that the bypass flow at least partially drives the pump to pull cooling flow through a motor to cool the motor.

POWER ELECTRONICS SECTION OF A STARTER-GENERATOR WITHOUT A COMMUTATOR

A rotating machine assembly includes a rotating machine that has a cover that defines an outer surface of the rotating machine and a stator disposed within the cover. The stator is stationary with respect to the cover. The rotating machine also includes a shaft rotatably disposed at least partially within the cover so as to define a rotation axis. The shaft Includes a first end that is connectable to an aircraft engine and a second end that is opposite the first end. The rotating machine also includes a rotor attached to the shaft, the rotor being movable with respect to the stator and a power module including at least one MOSFET that periodically reverses an electrical current direction of the rotor. The power module includes the at least one MOSFET Is disposed within the cover. 1. A rotating machine assembly , comprising: a cover that defines an outer surface of the rotating machine;', 'a stator disposed within the cover, the stator being stationary with respect to the cover;', 'a shaft rotatably disposed at least partially within the cover so as to define a rotation axis, the shaft including a first end that is connectable to an aircraft engine and a second end that is opposite the first end;', 'a rotor attached to the shaft, the rotor being movable with respect to the stator; and', 'a power module including at least one MOSFET that periodically reverses an electrical current direction of the rotor, wherein the power module including the at least one MOSFET is disposed within the cover., 'a rotating machine including'}2. The rotating machine assembly of claim 1 , further including a control enclosure with a control module disposed within claim 1 , wherein the control module is separate from and distinct from the power module and the control enclosure is mounted on the cover of the rotating machine so as to be external to and attached to the rotating machine.3. The rotating machine assembly of claim 1 , further including a chassis at least partially disposed ...

Electrical machine with multiple cooling flows and cooling method

FIELD: electricity. SUBSTANCE: electrical machine includes a stator (12), which has a winding support (22), which has at least one radial cooling slot (23), and a rotor (11), which likewise has at least one radial cooling slot (16). The winding support (22) of the stator (12) has on its outer lateral surface a number of axially running cooling ribs (24), along which an axially running first cooling flow (25) can be directed. Furthermore, the rotor (11) has axially running first cooling ducts (17), which open out into its at least one radial cooling slot (16), such that a second cooling flow (26) through the axial first cooling ducts (17) of the rotor (11), the at least one radial cooling slot (16) of the rotor (11), the air gap (27) between the rotor and the stator and the at least one radial cooling slot (23) can be directed in the axial direction along the axial cooling ribs (24) of the stator. EFFECT: easier mounting without loss in quality of cooling. 7 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 510 560 (13) C2 (51) МПК H02K 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011130908/07, 24.11.2009 (24) Дата начала отсчета срока действия патента: 24.11.2009 (43) Дата публикации заявки: 27.01.2013 Бюл. № 3 2 5 1 0 5 6 0 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 25.07.2011 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: ЕР 1050949 А1, 08.11.2000. RU 36586 U1, 10.03.2004. SU 1746478 А1, 07.07.1992. RU 2231195 C1, 20.06.2004. RU 2291545 C2, 10.01.2007. RU 2258295 C2, 10.08.2005. ЕР 1455433 А1, 08.09.2004. DE 1488657 А1, 12.06.1969. FR 1350043 A, 24.01.1964. (86) Заявка PCT: EP 2009/065737 (24.11.2009) (87) Публикация заявки РСТ: WO 2010/072499 (01.07.2010) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры" (54) ЭЛЕКТРИЧЕСКАЯ МАШИНА С НЕСКОЛЬКИМИ ОХЛАЖДАЮЩИМИ ПОТОКАМИ И СПОСОБ ОХЛАЖДЕНИЯ (57) ...

Verblockungselement für Rotorwickelköpfe bei Turbogeneratoren mit Läuferkappe mit radialen Ventilationsbohrungen

Das erfindungsgemäße Verblockungselement für die Rotorkopfwicklung eines Turbogenerators weist eine Raumform auf, die an die Kontour der angrenzenden Teilleiter der Rotorkopfwicklung angepasst ist. An seiner dem Teilleiter zugewandten Seite ist eine sich in axialer Richtung erstreckende Vertiefung eingebracht, die einen schlangenförmigen Kanal für ein Kühlfluid von einer Einlassöffnung auf dem kleinen Radius zu einer Auslassöffnung auf dem höchsten Radius bildet, wobei die Auslassöffnung mit einer Ventilationsbohrung der den Rotorwickelkopf umschließenden Läuferkappe kommuniziert. Die Erfindung bewirkt bei einem verringerten Volumenstrom an Kühlfluid eine verstärkte Kühlwirkung und damit eine Effizienzsteigerung des Turbogenerators insgesamt.

Generator rotor and end winding blocking member for a turbogenerator

A generator rotor (1) comprises a rotor body (11) and a plurality of conductive windings (21) extending along an axial extent of the rotor body. The conductive windings comprise winding end sections adjacent axial ends of the conductive windings, wherein the winding end sections are bent to comprise axially extending winding end sections (211) and adjacent circumferentially extending winding end sections (212). An axial blocking member (32) is provided between two neighboring circumferentially extending winding end sections (212) and a tangential blocking member (31) is provided between two neighboring axially extending winding end sections (211). An axial blocking member (32) comprises a circumferentially and radially extending wall (321) and a tangential blocking member comprises an axially and radially extending wall (311). At least one seal (313, 323) is provided between each surface of the wall of a blocking member and an adjacent winding end section.

ELECTRIC MACHINE WITH COMBINED AIR-WATER COOLING

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 126 783 A (51) МПК H02K 1/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015126783, 27.11.2013 (71) Заявитель(и): СИМЕНС АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) Приоритет(ы): (30) Конвенционный приоритет: 04.12.2012 EP 12195465.5 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.07.2015 R U (43) Дата публикации заявки: 13.01.2017 Бюл. № 02 (72) Автор(ы): НОАК Феликс (DE), СИНДЕЛКА Мартин (DE), ВАЙСС Себастьян (DE) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2014/086627 (12.06.2014) R U (54) ЭЛЕКТРИЧЕСКАЯ МАШИНА С КОМБИНИРОВАННЫМ ВОЗДУШНО-ВОДЯНЫМ ОХЛАЖДЕНИЕМ (57) Формула изобретения 1. Электрическая машина, причем она содержит корпус (1), в котором расположен статор (2) и в котором с возможностью вращения вокруг оси вращения (5) установлен ротор (4), причем корпус (1) проходит, если смотреть в направлении оси вращения (5), от переднего конца (6) к заднему концу (7), причем корпус (1) имеет либо вблизи переднего конца (6) воздуховпускное отверстие (10) и вблизи заднего конца (7) воздуховпускное отверстие (11), либо вблизи переднего конца(6) и заднего конца (7) по одному воздуховпускному отверстию (10), а между ними на параллельной оси вращения (5) стороне (9) - воздуховыпускное отверстие (11), причем электрическая машина при работе всасывает через воздуховпускные отверстия (10) воздух и выпускает всасываемый воздух из воздуховыпускного отверстия (11), причем на параллельную оси вращения (5) сторону (9) корпуса (1) надета насадка (13), которая наподобие колпака закрывает воздуховпускные отверстия (10) и воздуховыпускное отверстие (11), так что воздух, выталкиваемый через воздуховыпускное отверстие (11) из корпуса (1), снова подается в воздуховпускные отверстия (10), отличающаяся тем, что в статоре (2) расположены трубы (14) для жидкой охлаждающей среды (15), с помощью которой статор (2) при работе непосредственно охлаждается, Стр.: 1 A 2 0 1 5 1 2 6 7 8 3 A ...

Electric machine with combined air-water cooling

FIELD: machine engineering. SUBSTANCE: machine comprises a housing (1) in which a stator (2) and a rotor (4) are located. The housing (1) extends, when observed in the direction of the rotation axis (5), from the front end (6) to the rear end (7). The housing (1) has either an air inlet (10) near the front end (6) and an air outlet (11) near the rear end (7), or the air inlets (10) near the front and rear ends (6, 7), and between them on the side (9) parallel rotation axis (5) - the air outlet (11). A nozzle (13), which closes the air inlets (10) and the air outlet (11), is placed on the side (9) of the housing (1) parallel to the rotation axis (5). At least some of the tubes (14), when observed in the direction of the rotation axis (5), are protruded behind the stator (2) in the direction of the front and rear ends (6, 7), so that they draw the heat from the intake air flowing inside the housing (1) during the operation. EFFECT: cooling optimisation. 25 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 638 562 C2 (51) МПК H02K 1/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2015126783, 27.11.2013 (24) Дата начала отсчета срока действия патента: 27.11.2013 Дата регистрации: (72) Автор(ы): НОАК Феликс (DE), СИНДЕЛКА Мартин (DE), ВАЙСС Себастьян (DE) Приоритет(ы): (30) Конвенционный приоритет: (56) Список документов, цитированных в отчете о поиске: DE 3724186 A1, 26.01.1989. RU 04.12.2012 EP 12195465.5 (45) Опубликовано: 14.12.2017 Бюл. № 35 113891 U1, 27.02.2012. RU 2095921 C1, 10.11.1997. US 2008/030086 A1, 07.02.2008. EP 2518868 A1, 31.10.2012. EP 0623988 A2, 09.11.1994. DE 1813190 U, 15.06.1960. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.07.2015 (86) Заявка PCT: EP 2013/074812 (27.11.2013) (87) Публикация заявки PCT: 2 6 3 8 5 6 2 (43) Дата публикации заявки: 13.01.2017 Бюл. № 2 R U (73) Патентообладатель(и): СИМЕНС АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) 14.12.2017 2 6 3 8 5 6 2 R U ...

Electric machine with variable cooling system

FIELD: electrical engineering. SUBSTANCE: invention relates to electric machine cooling system. Electric air-cooled machine comprises housing to accommodate cooling device, wherein housing is designed for appropriate positioning of cooling device of different sizes. In the housing there is a first element of cooling air direction with the first positioning element for its positioning in multiple positions. Holders are provided for positioning elements. Holders can be oriented in axial direction of electric machine. Thus, similar sized casings can be used for electric machines. EFFECT: technical result is the creation of an electrical machine having improved variability for the cooling system. 7 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 692 781 C1 (51) МПК H02K 9/10 (2006.01) H02K 9/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H02K 9/10 (2018.08); H02K 9/18 (2018.08); H02K 2213/09 (2018.08); H02K 2213/12 (2018.08) (21)(22) Заявка: 2018111311, 08.09.2016 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): СИМЕНС АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) Дата регистрации: 27.06.2019 (56) Список документов, цитированных в отчете о поиске: EP 1408601 A2, 14.04.2004. WO 2012045358 A1, 12.04.2012. JPS 54158207 U, 05.11.1979. RU 2408964 C2, 10.01.2011. SU 1356124 A1, 30.11.1987. 30.09.2015 EP 15187620.8 (45) Опубликовано: 27.06.2019 Бюл. № 18 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 03.05.2018 (86) Заявка PCT: 2 6 9 2 7 8 1 (87) Публикация заявки PCT: WO 2017/055047 (06.04.2017) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ЭЛЕКТРИЧЕСКАЯ МАШИНА С ПЕРЕМЕННОЙ СИСТЕМОЙ ОХЛАЖДЕНИЯ (57) Реферат: Изобретение относится к области разных размеров. В корпусе размещен первый электротехники, в частности к системе элемент направления охлаждающего воздуха с охлаждения электрической машины. Технический первым ...

Connecting element for an alternator of an electric energy production plant and alternator comprising said connecting element

Cooling circuit for removing waste heat from an electromechanical convertor and power plant assembly with such a cooling circuit

The circuit has a cooler extracting heat from a chilling medium, and a return unit connecting a cooling device of an electromechanical converter with the cooler. An absorption chiller such as water/lithium-bromide absorption chiller or ammonia/water absorption chiller, is provided with an evaporator and a generator, where the evaporator is connected with a feed unit. A cooling unit is arranged between the generator and the evaporator in a chilling fluid flow direction. An independent claim is also included for a power generating plant comprising a turbine.

Cooling circuit for removing waste heat from an electromechanical converter and power generating plant with a cooling circuit of this type

A cooling circuit for removing waste heat from a cooling device of an electromechanical converter is provided. The cooling circuit includes a chilling medium, a cooler for extracting heat from the chilling medium, a return connecting the cooling device of the converter to the cooler and conducts warm chilling medium, a feed connecting the cooler to the cooling device of the converter and conducts cool chilling medium, and an absorption chiller for extracting heat from the chilling medium. The absorption chiller is driven by the heat of the warm chilling medium that is in the return.

Cooling structure, stator, axial magnetic field motor and assembling method

本发明提供了一种冷却结构、定子、轴向磁场电机及组装方法，其中冷却结构包括冷却盘，所述冷却盘包括转子相对面、定子相对面，以及贯穿所述转子相对面和所述定子相对面的若干个定子套孔，所述转子相对面和所述定子相对面之间还设置有流道，所述流道围绕于各所述定子套孔的周围。所述冷却盘可被内置于电机内部，且位于定子和转子之间，然后通过向所述流道内引入冷却介质，以使所述转子和所述定子的热量通过流动的冷却介质进行热传递，相对于传统的机壳水道布置方式来说，缩短了所述转子和所述定子分别与所述冷却结构之间的热传递路径，进而有效提升散热效果，以保证电机可靠运行。

Permanent magnet rotating electrical machine and wind power generation system