With Control Means Patents (Class 310/53)
  • Patent number: 10333368
    Abstract: A cooling unit of a drive motor includes: a fixing member installed on an inner wall surface of a motor housing and configured to fix a stator core of the drive motor, wherein the fixing member has a ring shape, includes a flow path formed therein in order to allow a cooling medium to flow, and includes a cooling medium inlet and a cooling medium outlet formed to be connected to the flow path, the flow path includes a first path connecting the cooling medium inlet and the cooling medium outlet to each other at one side and a second path connecting the cooling medium inlet and the cooling medium outlet to each other at another side, and the first and second paths have different flow cross sections and are connected to each other.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: June 25, 2019
    Assignee: Hyundai Motor Company
    Inventors: Kyoungbum Kim, MyungKyu Jeong, GaEun Lee, SangHwa Do, Young Jin Seo
  • Patent number: 10270307
    Abstract: A front housing of an electric motor includes an air discharging member for discharging air toward a rotary shaft. The front housing includes an annular first air chamber that is formed in the air discharging member, and an annular second air chamber that is formed outside the first air chamber. The front housing includes an air supply path for supplying compressed air to the second air chamber, and a connection flow passage for causing the first air chamber to communicate with the second air chamber. The connection flow passage is formed at a position other than a position of the air supply path in the circumferential direction of the housing.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: April 23, 2019
    Assignee: FANUC CORPORATION
    Inventor: Yohei Kamiya
  • Patent number: 10218244
    Abstract: 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.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: February 26, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masahiro Kondo, Kiyonori Koga
  • Patent number: 10100893
    Abstract: A clutch assembly for coupling an internal combustion engine to a drive train of a motor vehicle, having a frictional clutch for coupling a drive shaft of the internal combustion engine to an output shaft, an actuating device for opening and/or closing the frictional clutch, an eddy current brake for introducing an actuating force into the actuating apparatus, and a control apparatus for applying a defined, predetermined current to the eddy current brake, wherein the control apparatus is configured, in an acceleration phase of a torsional vibration of the drive shaft, to specify a current for opening, in particular for adjusting a slip operation, of the frictional clutch and, in a deceleration phase of the torsional vibration of the drive shaft, to specify a current for closing, in particular for rotationally-fixed, frictional coupling, of the frictional clutch for the eddy current brake.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: October 16, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Daniel Helmer, Marc Finkenzeller
  • Patent number: 10079534
    Abstract: A superconducting electrical machine includes a rotor and a stator. The rotor includes rotor windings configured to superconduct when cooled in a rotor cryostat to a temperature no greater than a rotor superconducting temperature. The stator includes a stator windings configured to superconduct when cooled in a stator cryostat to a temperature no greater than a stator superconducting temperature. The rotor cryostat surrounds the rotor and is configured to allow transport of a first coolant through a plurality of conduits adjacent to the rotor windings in order to draw heat from the rotor windings and reduce the temperature of the rotor windings to a temperature no greater than the rotor superconducting temperature.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: September 18, 2018
    Assignee: KATO ENGINEERING INC.
    Inventors: Darrell Morrison, Ted Daly
  • Patent number: 10041711
    Abstract: Provided are a superconducting rotating machine which improves the cooling efficiency of a rotor by using schemes of passively or actively circulating a coolant and a cooling method thereof. The superconducting rotating machine includes a rotor supported rotatably about a rotation axis and including: at least one superconductive coil; and a central cavity; and a cooling apparatus disposed at an exterior of the rotor and configured to communicate with the cavity, wherein the cooling apparatus includes: a condenser configured to condense a gas coolant supplied through a gas coolant supplying pipe to generate a condensed coolant; a coolant circulating unit configured to supply the condensed coolant into the cavity, configured to recover a vapor coolant evaporated in the cavity into the condenser and configured to circulate the condensed coolant; and a forced circulating unit configured to actively circulate the condensed coolant into the cavity in response to the rotor being tilted.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: August 7, 2018
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventor: Woon Sik Kwon
  • Patent number: 10014750
    Abstract: A power generator for which assembly work can be performed under a state in which a separable body is separated from a first frame portion and a first partition plate portion when a stator is assembled inside a frame. Therefore, an end bell to be integrated with a second partition plate portion has a small diameter, and can be arranged close to a rotor. As a result, the end bell made of an insulating resin can be arranged only in a portion in which a flux-loss reduction effect is significant.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: July 3, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Norihiko Hana, Masahiro Kondo
  • Patent number: 9948168
    Abstract: A manufacturing method of a stator for manufacturing a stator by mounting a concentrated winding coil wound with a square wire conductor on each of a plurality of teeth in a stator core and welding end of the concentrated winding coil to corresponding end of another concentrated winding coil, characterized in that a first set of concentrated winding coils and a second set of concentrated winding coils are mounted on the teeth, and the welding of each end in the first set of concentrated winding coils and corresponding end in the second set of concentrated winding coils is started while a third set of concentrated winding coils is mounted on the teeth.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: April 17, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Mutsumi Kawamoto, Susumu Kato, Shingo Hashimoto, Takeshi Yokoyama, Hiroyuki Tanaka, Kazuya Iwatsuki, Shingo Sato
  • Patent number: 9915224
    Abstract: An engine testing system comprises a rotary absorber that provides a variable resistance to an engine under test and heats coolant from a cold reservoir. A hot reservoir coupled to rotary absorber stores the heated coolant for later (or concurrent) use. Moreover, an organic Rankine cycle turbine-generator device is coupled to the hot reservoir, which converts heat from heated coolant into electrical power. A conditioning system is coupled to the organic Rankine cycle turbine-generator device that cools the coolant for storage in the cold reservoir. The available captured waste energy may be augmented with waste energy that is also available during engine testing. The additional waste energy may be in the form of exhaust gases, thrust, heat from engine coolant systems, residual engine heat, radiant or convective waste heat, friction etc. Variations of the above system may replace the primary energy re-capture from other than a rotary absorber.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 13, 2018
    Assignee: SYMBRIUM, INC.
    Inventor: G. Wesley Blankenship
  • Patent number: 9771670
    Abstract: An open-end spinning device of a rotor spinning machine has a spinning rotor with a rotor cup, in which fiber material is spun, and with a rotor shaft through which the spinning rotor is driven. A bearing is arranged in a contactless way with a drive to drive the spinning rotor. A rotor housing is provided in which the rotor cup is arranged and which is impinged with spinning negative pressure (pSU) during spinning operation through a negative pressure channel. A drive housing is provided in which the rotor shaft of the spinning rotor extends, and in which the drive and the bearing of the spinning rotor are arranged. The rotor housing and the drive housing are arranged spaced apart from one another in the open-end spinning device in the axial direction of the rotor shaft. In a method to operate such an open-end spinning device, the rotor housing is impinged with spinning negative pressure (pSU) during the spinning operation.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: September 26, 2017
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Mathias Burchert, Josef Schermer
  • Patent number: 9419499
    Abstract: A rotating electric machine includes a rotor, a stator, a cooling device and a pair of cooling liquid collection tanks. The stator includes an annular stator core and a stator coil. The stator core is disposed radially outside the rotor so as to surround the rotor. The stator coil is mounted on the stator core so that a pair of coil ends of the stator coil protrude axially outward respectively from opposite axial end faces of the stator core. The cooling device is configured to supply cooling liquid to vertically upper parts of the coil ends of the stator coil. Each of the cooling liquid collection tanks is arranged to surround a vertically lower part of a corresponding one of the coil ends so as to collect and temporarily reserve therein the cooling liquid moved from the upper part to the lower part of the corresponding coil end.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: August 16, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hirohito Matsui, Koji Asagara, Atsuo Ishizuka
  • Patent number: 9407122
    Abstract: A motor housing includes a central body having a central cavity region configured to receive an electric motor. Also included is a first end portion having a first inner surface that defines a first internal cavity region configured to receive a first end winding of a stator of the electric motor, wherein the first internal cavity region comprises a first radius defined by a distance from a main axis of the motor housing to the first inner surface. Further included is a second end portion having a second inner surface that defines a second internal cavity region configured to receive a second end winding of the stator, wherein a ratio of the first radius to a first end portion wall thickness ranges from 19.89 to 27.85.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: August 2, 2016
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Darryl A. Colson, Clarence J. Wytas, Jr., Murtuza Lokhandwalla
  • Patent number: 9407118
    Abstract: The disclosure includes a generator gas shield support device, and method of removing the generator gas shield using the support device. In one embodiment, the generator gas shield support device of a generator system includes a first support coupled to a generator rotor of the generator system. The first support of the generator gas shield support device is configured to releasably couple a first portion of a generator gas shield to the generator rotor of the generator system. The generator gas shield support device may also include a second support releasably coupled to the generator rotor. The second support is configured to support the first portion of the generator gas shield during a rotation of the generator rotor.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 2, 2016
    Assignee: General Electric Company
    Inventors: Artur Marcin Chuc-Karmanski, Tony Lee Bombe, Marek Wojciechowski, Wiktor Jan Wojciechowski
  • Patent number: 9377008
    Abstract: There is provided a wind power installation comprising a synchronous generator which has a generator stator and a generator rotor for producing electric energy. The wind power installation further has a fluid cooling system for cooling the generator rotor.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: June 28, 2016
    Assignee: WOBBEN PROPERTIES GMBH
    Inventors: Arno Hildebrand, Christian Baumgaertel
  • Patent number: 9353439
    Abstract: An apparatus for use in semiconductor processing operations to distribute process gases across a semiconductor wafer. The apparatus may include one or more annular baffles arranged in a stack of annular baffle layers within a plenum volume of the apparatus. Each annular baffle may have a mid-diameter substantially equal to and inner diameter or outer diameter of a baffle in the annular baffle layer above it. The annular baffles may be arranged in a cascading fashion.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: May 31, 2016
    Assignee: Lam Research Corporation
    Inventors: Dhritiman S. Kashyap, David G. Cohen, Davinder Sharma
  • Patent number: 9246373
    Abstract: An assembly for cooling an electrical coil winding having a first coil, a second coil, a first end turn and a second end turn is provided. The assembly includes a supply header; a return header; and a plurality of flow members coupled in flow communication to the supply header and the return header. The flow members are configured to channel a flow agent from supply header to the return header. Each the flow member of the plurality of flow members includes a first portion coupled to the first coil; a second portion coupled to the second coil; a first end portion coupled to the first end turn and coupled in flow communication to the first portion and the second portion; and a second end portion coupled to the second end turn and coupled in flow communication to the second portion.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: January 26, 2016
    Assignee: General Electric Company
    Inventors: Robert M. Zirin, Kiruba Sivasubramaniam Haran, Michael John Douglass, Rammohan Rao Kalluri
  • Patent number: 9170193
    Abstract: An apparatus for detecting a leak in a gas cooled generator is provided. The apparatus includes a subsystem for introducing a non-corrosive second gas having an infrared absorption spectrum into the generator. The apparatus also includes an imaging component adapted to detect radiation at the infrared absorption spectrum of the non-corrosive second gas. The imaging component is provided with a filter that filters wavelengths in a range encompassing the infrared absorption spectrum of the non-corrosive second gas. The imaging component displays an image of the tracer gas leaking from the generator on the imaging component.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: October 27, 2015
    Assignee: General Electric Company
    Inventors: James Jun Xu, Leonard Paul Squillacioti, Stephen Frank Francese, Brian Scott Shewchuk, Erich John Wollman
  • Patent number: 9097657
    Abstract: A safe, fast and accurate method of detecting a leak locale of a stator liquid cooling system especially in a plurality of stator windings in a liquid cooled generator is provided. The method includes the step of introducing a non-corrosive compatible gas or its air mixture having an infrared absorption spectrum into the plurality of stator windings of the liquid cooled generator and detecting leaks through the use of an infrared detection system. The infrared detection system includes an imaging component adapted to detect radiation at the infrared absorption spectrum of the non-corrosive gas or its air mixture. The imaging component is provided with a filter that filters wavelengths in a range encompassing the infrared absorption spectrum of the compatible, non-corrosive gas. The imaging component displays an image of the tracer gas leaking from stator liquid cooling system of the generator.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: August 4, 2015
    Assignee: GENERAL ELECTRIC COMPANY
    Inventor: James Jun Xu
  • Publication number: 20150145255
    Abstract: A system (for controlling cooling of an alternator) comprises a control system, an alternator, and a blower fan, the alternator having a stator and a rotor. The control system is adapted to estimate one or more temperatures of the stator and/or rotor of the alternator using a thermal model. The control system is also adapted to control the blower fan to cool the alternator by providing a specified amount of air flow across the stator and rotor of the alternator, based on the estimated one or more temperatures of the stator and/or rotor.
    Type: Application
    Filed: May 31, 2013
    Publication date: May 28, 2015
    Applicant: General Electric Company
    Inventors: Maksim V. Borisenko, Edward Thomas Petrak, Roy David Schultz, Rajeev Verma, Sunil Srinivasa Murthy
  • Publication number: 20150137630
    Abstract: The invention provides systems and methods for cooling and lubrication of high power density electric machines with an enhanced fluid injection system. Multiple fluid flow passages may be provided within the electric machine, which may include one or more bearing fluid flow pathways and one or more rotor fluid flow pathways. The bearing fluid flow pathway may comprise one or more passages which may direct a fluid to contact one or more bearings for lubrication and cooling of the one or more bearings. The rotor fluid flow pathway may comprise one or more passages which may direct a fluid along the rotatable shaft toward the rotor and stator for cooling of the rotor and stator. The electric machine may also include a fluid flow passage leading to a junction, wherein the fluid flow pathway may split between the bearing fluid flow pathway and the rotor fluid flow pathway.
    Type: Application
    Filed: October 14, 2014
    Publication date: May 21, 2015
    Inventors: Rudolph Garriga, Michael KUBIC
  • Publication number: 20150042184
    Abstract: Provided is a rotary-electric-machine temperature estimation system for a vehicle. The temperature estimation system includes a rotary electric machine, a cooler, a temperature sensor, and a controller. The rotary electric machine is fixed to a vehicle body of the vehicle and provided in the vehicle. The rotary electric machine includes a stator coil. The cooler has an injection outlet for injecting refrigerant, and cools off the stator coil by the refrigerant thus injected from the injection outlet. The temperature sensor measures a temperature of the stator coil. The controller estimates an actual temperature of the stator coil by use of the measured temperature and a preset temperature correction value. The controller changes the temperature correction value according to a change in a posture of the vehicle body.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Inventor: Takashi Matsumoto
  • Publication number: 20150035391
    Abstract: An apparatus for providing a coolant to a stator and a rotor of an electric motor in a vehicle having a coolant pump is provided. The apparatus includes a base defining a plurality of first openings through at least one of which the coolant is flowable to the stator. The apparatus also includes at least one wall extending from the base to define a cavity configured to receive the coolant from the coolant pump. The apparatus further includes at least one first raised member within the cavity that extends from the base. The at least one first raised member defines at least one second opening substantially aligned with one of the first openings to form a first passageway through which the coolant is flowable to the rotor. The apparatus may be located above the electric motor such that the coolant is flowable by gravity to the stator and/or the rotor.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 5, 2015
    Applicant: GM Global Technology Operations LLC
    Inventors: Micah Joel Fuchs, Paul F. Turnbull, Edward L. Kaiser
  • Patent number: 8922073
    Abstract: An electric motor includes a stator, a rotor disposed to be rotatable with respect to the stator, and a cooling unit including a cooling fluid and disposed between the stator and the inverter device to cool the stator and the inverter device. Weight can be reduced, and thus, power consumption of a battery can be reduced and a traveling distance of the vehicle can be increased.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: December 30, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kwangwook Chun, Jaeho Kim, Yunho Kim
  • Patent number: 8912695
    Abstract: A totally enclosed fan cooled (TEFC) induction motor or other type of induction motor auxiliary cooling system has a buffet thermal shroud that is oriented in opposed spaced relationship over existing motor housing cooling fins. An airflow channel is defined between the motor cooling fins and the shroud, for direction and passage of a cooling airflow. Tabs are oriented in the airflow channel between opposed cooling fins where they are in thermal and fluid communication with the cooling air flow. In some embodiments the tabs are shroud fingers that project inwardly from the shroud. The tabs or shroud fingers create turbulence in the cooling air flow that increases convective heat transfer efficiency and contact time between the cooling air and motor cooling fins. Tabs or shroud fingers also absorb heat from the cooling air flow. Shroud fingers also transfer that absorbed heat conductively to the shroud.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: December 16, 2014
    Assignee: Siemens Industry, Inc.
    Inventor: Emam Hashish
  • Publication number: 20140339933
    Abstract: An electric machine includes a housing having an outer surface and an inner surface. A stator is fixedly mounted to the inner surface. The stator includes a stator core, and a plurality of windings supported by the stator core. The plurality of windings includes first and second end turn portions. A rotor is rotatably mounted within the housing. An adaptable cooling system is fluidically connected to the housing. The adaptable cooling system includes a first coolant circuit configured to guide coolant in a heat exchange relationship with the stator core, and a second coolant circuit configured to guide coolant in a heat exchange relationship with the at least one end turn portion. At least one flow controller is configured and disposed to selectively adapt coolant delivery through the first and second coolant circuits based on coolant temperature flowing from the stator.
    Type: Application
    Filed: May 15, 2013
    Publication date: November 20, 2014
    Applicant: REMY TECHNOLOGIES, L.L.C.
    Inventors: Noman Hossain, Anthony Trzaska
  • Publication number: 20140339932
    Abstract: An electric machine includes a stator. The stator includes a stator core, and a plurality of windings supported by the stator core. The plurality of windings include a first end turn portion and a second end turn portion. An adaptable cooling system is fluidically connected to the housing. The adaptable cooling system includes a first coolant circuit configured to guide a coolant in a heat exchange relationship with the stator core, and a second coolant circuit configured to guide a coolant in a heat exchange relationship with one of the first and second end turn portions. A thermal control module is operably connected to the adaptable cooling system.
    Type: Application
    Filed: May 15, 2013
    Publication date: November 20, 2014
    Applicant: REMY TECHNOLOGIES, L.L.C.
    Inventors: Noman Hossain, Anthony Trzaska
  • Patent number: 8875825
    Abstract: A power control unit that controls a rotary electric machine that drives a vehicle, and that is mounted onto a motor case in which the rotary electric machine is housed, includes a fixed base that is made of resin; a cooler that is arranged on the fixed base and that includes a power module; and a control substrate that is arranged on the cooler. The fixed base inhibits conduction of heat from the motor case to the power control unit.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: November 4, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Ken Asakura, Yutaka Hotta, Tatsuyuki Uechi
  • Patent number: 8878403
    Abstract: An air-cooled motor-generator (10) includes a rotor (34) with a rotor shaft (11), which is arranged rotatably about a machine axis (15) and on which a rotor winding (16) is arranged, and a stator (35) with a stator laminate stack (18) and a stator winding (17) arranged therein, which concentrically surrounds the rotor winding (16) A closed cooling circuit operating with cooling air (24) is provided, with the cooling air in the cooling circuit flowing through the rotor winding (16) and the stator winding (17) radially from the inside outwards, the cooling air being cooled in coolers (19) arranged outside the stator (35) and being fed back to the rotor (34). Cooling which can be changed before or during operation is achieved in a simple manner by virtue of the fact that adjustable throttle devices are provided for adjusting the volume flow of the cooling air in the cooling circuit at the coolers (19).
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: November 4, 2014
    Assignee: Alstom Renewable Technologies
    Inventors: Alexander Schwery, Stefan Baumeister, Benjamin Jordan, Simon Andreas Frutiger
  • Patent number: 8879044
    Abstract: A lithographic device includes a cooling device for removing heat from a motor. The cooling device has a cooling element provided in thermal contact with at least part of the motor. The cooling device further has a cooling duct assembly with a supply duct to supply a cooling fluid to the cooling element, and a discharge duct to discharge the cooling fluid from the cooling element. A pump causes the cooling fluid to flow through at least part of the cooling duct assembly. A flow control device controls a flow rate of the cooling fluid through at least part of the cooling duct assembly, to maintain a predetermined average temperature of the cooling fluid in the cooling element.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: November 4, 2014
    Assignee: ASML Netherlands B.V.
    Inventor: Frank Auer
  • Patent number: 8872400
    Abstract: Systems and methods are provided for cooling and lubrication of high power density electric machines with an enhanced fluid injection system. Multiple fluid flow passages are within the electric machine, which include a bearing fluid flow pathway and a rotor fluid flow pathway. The bearing fluid flow pathway comprises a passage which directs fluid to contact a bearing for lubrication and cooling. The rotor fluid flow pathway comprises a passage which directs fluid along the rotatable shaft toward the rotor and stator for cooling. A fluid flow passage may lead to a junction, and may split between the bearing fluid flow pathway and the rotor fluid flow pathway. Additionally, a fluid flow metering device at the junction between the bearing fluid flow pathway and the rotor fluid flow pathway, may determine the relative amount of fluid that flows to the bearing and that flows toward the rotor and stator.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: October 28, 2014
    Assignee: Clean Wave Technologies, Inc.
    Inventors: Ruldolph Garriga, Mike Kubic
  • Publication number: 20140265656
    Abstract: An electric machine includes a housing, a stator including stator windings mounted to the housing, a rotor supported in the housing and configured to rotate relative to the stator, a temperature sensing system including one or more resistors mounted to one of the stator and the rotor, and a controller electrically connected to the one or more resistors. The controller is configured and disposed to determine a temperature of the one of the stator and the rotor based on an electrical parameter of the one or more resistors.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: REMY TECHNOLOGIES, L.L.C.
    Inventor: Paul Martin Dedrich
  • Publication number: 20140232218
    Abstract: A cooling system and a cooling method, capable of reducing a temperature gradient of a rotating electrical machine by means of a simple structure, in relation to both axial and circumferential directions thereof. The cooling system has a coolant conveying device such as a pump, and a coolant cooling device such as a heat pump. The conveying device is fluidly communicated with a flow path via a coolant pipe 32, whereby a circulatory coolant path is formed in which coolant conveyed from the pump flows in the path of a jacket and returns to the pump. The coolant conveying device is configured to reverse the flow direction of coolant, whereby the flow direction in the flow path can be properly reversed.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 21, 2014
    Applicant: FANUC CORPORATION
    Inventors: Shinobu Takano, Yohei Arimatsu
  • Patent number: 8803378
    Abstract: A rotating electrical machine (100) is driven by a three-phase AC current and is provided with a stator core (13), a molded resin (12) for covering a coil wound on the stator core, a rotor core (40), a shaft (11) provided to the rotor core (40), a terminal base (20) provided to a coil end section, and a case (30) for covering the rotating electrical machine (100). Power cables extending from the terminal base (20) are led out of the case (30) through a case terminal box (31). A temperature sensor (22) is affixed in a hole in the molded resin (12) by the terminal base (20) and measures the temperature in the vicinity of a heat producing source.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: August 12, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Tomoka Sonohara, Hiroaki Urano, Yasuji Taketsuna, Satoshi Murata, Yasuaki Tahara, Kenji Ishida
  • Patent number: 8777585
    Abstract: An electric compressor 10 includes a compression mechanism 11, an electric motor 12 driving the compression mechanism 11, and a control portion 13 controlling to drive the electric motor 12, incorporated into a single casing, and further includes a temperature detector 14 detecting a temperature of one or more components constituting one or both of the control portion 13 and the electric motor 12, and a current detector 15 detecting a current flowing through the component. When the temperature detected by the temperature detector 14 is a temperature Td, the current detected by the current detector 15 is a current Id, and a current corresponding to the temperature Td at a temperature characteristic relating to the current specific to the component is a current Ia(Td), the control portion 13 stops driving the electric motor 12 on the basis of a result of comparison between Ia(Td) and Id.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: July 15, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Koji Nakano, Takashi Nakagami, Hideto Noyama, Masahiko Asai, Makoto Hattori, Takayuki Takashige
  • Publication number: 20140191696
    Abstract: A rotary electric machine includes a rotor that is arranged such that an axis of rotation of the rotor extends in a horizontal direction, a stator that is provided with an coil end on which coolant is supplied from a position above the coil end in a direction of gravitational force, and a temperature sensor that is arranged on an outer peripheral face of the coil end at a position near a horizontal plane that includes the axis of rotation of the rotor. When the flow rate of the coolant is below a threshold the temperature sensor measures the coil temperature. When the flow rate of the coolant is above a threshold, so that coolant is in direct contact with the temperature sensor, it measures the coolant temperature.
    Type: Application
    Filed: July 25, 2012
    Publication date: July 10, 2014
    Inventor: Hiroyuki Hattori
  • Patent number: 8766497
    Abstract: A motor-generator which is a rotating electrical machine is provided with a coil end cover and a plurality of connecting wires. The coil end cover forms a cooling oil passage around a coil end portion and a cooling oil passage around a coil end portion, and a cooling oil communicating passage that communicates the cooling oil passage with the cooling oil passage on the inside of the stator core. The plurality of connecting wires are provided in the cooling oil passage. The direction in which the cooling oil flows in the cooling oil passage is the same as the direction in which the connecting wires extend at an angle from the radial outside to the radial inside of the stator core. The flowrate of cooling oil in the cooling oil passage is set larger than the flowrate of cooling oil in the cooling oil passage.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: July 1, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhiro Goto, Yasuhiro Endo, Tomoka Sonohara, Tomohiko Miyamoto, Masao Okumura, Atomi Arakawa
  • Patent number: 8760013
    Abstract: A hand-held power tool with a drive motor and a gear mechanism has elastomer elements molded onto the inner side of the housing. At least two elastomer elements form elastomer bearings for bearing the drive motor.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: June 24, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Florian Esenwein
  • Patent number: 8708071
    Abstract: A cooling system for an electric vehicle includes: a cooling unit that cools an electric drive unit; and a control unit that controls cooling of the electric drive unit by controlling the cooling unit. The control unit controls the cooling unit in a first cooling mode that provides a first cooling capacity when a force for driving the electric vehicle due to the electric drive unit is in a first operational region, and controls the cooling unit in a second cooling mode that provides a second cooling capacity that is higher than the first cooling capacity when the force due to the electric drive unit is in a second operational region that is higher than the first operational region; and in the second cooling mode, the control unit controls the cooling unit so that the second cooling capacity becomes higher as a rotational speed of the electric drive unit decreases.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: April 29, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Yokoyama, Masatsugu Arai, Shingo Nasu
  • Publication number: 20140062228
    Abstract: A thermal management system for a vehicle having an electric traction motor for moving the vehicle and a battery pack configured to provide power for driving the motor. The thermal management system includes a motor cooling system operable to cool the motor, and a second thermal load cooling system configured to remove heat from a second thermal load. The second thermal load cooling system is selectively thermally connectable to the motor to remove heat therefrom. A control system is provided and is configured to detect a motor cooling system failure situation and can operate the second thermal load cooling system to thermally connect the second thermal load cooling system to the motor to cool the electric traction motor in response to detection of the motor cooling system failure situation.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Inventors: Neil Carpenter, Ibrahim Alkeilani, John Carter, Guangning Gao
  • Publication number: 20140054986
    Abstract: A control apparatus for a rotary electric machine, which has a rotary element that includes a permanent magnet, includes a magnet temperature acquisition portion, a coolant temperature detection portion and a temperature control portion. The magnet temperature acquisition portion acquires information about temperature of the permanent magnet. The coolant temperature detection portion detects temperature of a coolant that cools at least the rotary element. The temperature control portion performs a temperature raising control of the permanent magnet when the temperature of the permanent magnet is less than or equal to a first threshold temperature and the temperature of the coolant is less than or equal to a second threshold temperature.
    Type: Application
    Filed: August 6, 2013
    Publication date: February 27, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yu HIRAI, Kazuhide MIYATA
  • Patent number: 8633624
    Abstract: Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: January 21, 2014
    Assignee: Controlled Power Technologies, Ltd.
    Inventors: Stephen Knight, Mike Dowsett, Toby Heason
  • Publication number: 20130342044
    Abstract: A system for cooling a dynamoelectric machine is provided. The system includes a coolant medium inlet, a coolant medium outlet and a fan connected to a rotor of the dynamoelectric machine, The system further includes a flow control device configured to control the amount of the coolant medium passing through the dynamoelectric machine by controlling an opening area of at least one of the coolant medium inlet and the coolant medium outlet. The system further includes a winding temperature measurement system configured to measure the temperature of one or more windings in the dynamoelectric machine, and control the flow control device by adjusting the opening area of at least one of the coolant medium inlet and the coolant medium outlet based on the temperature of the windings in the dynamoelectric machine to at least one of reduce windage loss and control coolant medium pressure within the dynamoelectric machine.
    Type: Application
    Filed: December 11, 2012
    Publication date: December 26, 2013
    Applicant: GE JENBACHER GMBH & CO. OG
    Inventor: GE Jenbacher GMBH & Co. OG
  • Publication number: 20130328422
    Abstract: The rotor for an electric machine comprises a shaft, a spider on the shaft, a laminated drum on the spider. The spider has a plurality of apart elements defining ducts between each other. The laminated drum has a plurality of cooling channels connected to the ducts. The rotor also has throttle elements associated to at least one duct and/or cooling channel.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 12, 2013
    Inventors: Alexander Schwery, Stefan Baumeister
  • Publication number: 20130300227
    Abstract: A wind power generator has a nacelle; a hub rotatable about an axis of rotation with respect to the nacelle; at least two blades fitted to the hub; an electric machine which is fitted to the nacelle, is bounded by an inner surface extending about the axis of rotation, and has a rotor and a stator; and a cooling system for airflow cooling the electric machine, and which has a deflector body for defining a gap between the deflector body and the electric machine and guiding the airflow into the gap.
    Type: Application
    Filed: July 16, 2013
    Publication date: November 14, 2013
    Inventors: Otto Pabst, Georg Folie, Matteo Casazza, Paolo Bustreo, Peter Gebhard
  • Publication number: 20130300226
    Abstract: A rotating electric machine includes a rotor, a stator, formed by stacking perforated-disk-shape stator cores, surrounding the rotor, arranged with a gap from the rotor, a first stator cooling duct to allow the cooling gas to flow from an inner side toward outer side of the stator, a second stator cooling duct to allow the cooling gas to flow from an outer side to an inner side of the stator, a plurality of support plates for supporting the stator and providing sectioning between the first and second flow paths, and a flow control part configured to suppress a flow of the cooling gas passing through the gap part where the outer end part of the stator core and the inner end part of the support plate face each other.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 14, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Shigeki TOUNOSU, Kenichi HATTORI, Kenji SEKIYA, De MENG
  • Publication number: 20130285485
    Abstract: Disclosed are an electric motor and an electric vehicle having the same. The electric motor includes a stator including a stator core and a stator coil wound around the stator core, a rotor disposed to be rotatable with respect to the stator, and a cooling unit configured to allow a cooling fluid to flow therein and disposed to be in contact with the stator to cool the stator, wherein an outer surface of the stator core includes grooves in which the cooling unit is inserted. Cooling performance can be enhanced by shortening a heat transmission path, and the cooling unit can be easily fabricated and coupled.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Inventors: Hyeokjin Song, Kwangwook Chun, Jacho Kim, Jiseong Park, Seungdo Han
  • Publication number: 20130285486
    Abstract: A cooling system includes a cooling circuit that has a circulation pump circulating a coolant containing antifreeze solution and cools down, by means of the coolant, a power element mounted in a power converter for an on-vehicle rotary electric machine; a control signal calculation unit that calculates heat quantity generated by the power element; a power element temperature sensor that detects the temperature of the power element; and a coolant temperature sensor that detects the temperature of the coolant. The control signal calculation unit calculates, on the basis of the heat quantity, the temperature of the power element, and the coolant temperature, power element cooling performance that is the amount of heat transferred from the power element to the coolant per unit temperature difference, and lowers the driving power of the circulation pump when the calculated power element cooling performance is greater than a predetermined criterion.
    Type: Application
    Filed: January 12, 2012
    Publication date: October 31, 2013
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Yuto Imanishi, Atsushi Yokoyama, Hiroyuki Yamada
  • Patent number: 8564237
    Abstract: In an embodiment, a system includes: a casing for surrounding at least a portion of a rotor, and enclosing a volume of a cooling gas thereabout, the casing including a plurality of static seals; an end housing at each end of the casing, each end housing including a seal system through which the rotor extends, wherein a portion of cooling gas escapes from the casing to at least one seal area; and a source of cooling gas fluidly coupled to the casing by a cooling gas regulator. The system may further include: a scavenging system coupled to each end housing for removing a gas mixture therefrom including a portion of escaping cooling gas; a sensor for determining a purity of the cooling gas in the casing; and a static seal leak detector that generates an alarm indicative of a leak in at least one of the plurality of static seals.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: October 22, 2013
    Assignee: General Electric Company
    Inventors: Vinodh Kumar Bandaru, Jeffrey James Andritz, James Daniel Antalek, Krishna Swamy Cherukuri, Daniel James Fitzmorris, Anthony James George, Nicola Piccirillo, Sudhanshu Rai
  • Patent number: 8558421
    Abstract: A geared cooling device and method of manufacturing a geared cooling device. The cooling device includes a fan shaft, a fan coupled to the fan shaft and a speed adjuster coupled to a motor shaft of a motor and coupled to the fan shaft. The speed adjuster adjusts a rotational speed of the fan shaft to cause the fan shaft to rotate at a different rotational speed than the motor shaft to facilitate passing cooling air past the motor. The method of manufacturing includes coupling the speed adjuster to the motor shaft and to the fan shaft.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: October 15, 2013
    Assignee: General Electric Compant
    Inventors: Mandar Ranganath Rai, Sreeramachandra Ragidimilli, Sachin Vitthal Mahajan
  • Publication number: 20130257195
    Abstract: Rotor arrangement for a generator is disclosed. The rotor arrangement includes a rotor including a number of circumferentially adjacently disposed magnetic elements, at least one axially extending spacer element is disposed between at least two circumferentially adjacently disposed magnetic elements.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 3, 2013
    Inventor: Giovanni Airoldi