Miscellaneous Stator Structure Patents (Class 310/254.1)
  • Patent number: 10544775
    Abstract: A hydroelectric energy system includes a stator including a first plurality of electricity-generating elements. The system also includes a rotor including a second plurality of electricity-generating elements. The rotor is disposed radially outward of an outer circumferential surface of the stator and is configured to rotate around the stator about an axis of rotation. The rotor is a flexible belt structure having a variable thickness and extending along a portion of an axial length of the stator. The system further includes at least one hydrodynamic bearing mechanism configured to support the rotor relative to the stator during rotation of the rotor around the stator. The at least one hydrodynamic bearing mechanism includes a bearing surface made of wood or a composite material.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: January 28, 2020
    Assignee: Oceana Energy Company
    Inventor: Daniel E. Power, III
  • Patent number: 10468949
    Abstract: A cooling structure for a rotating electrical machine includes a rotating electrical machine including a stator and the stator, a temperature sensor, and a first discharge mechanism. A plurality of discharge holes of the first discharge mechanism is disposed in a region excluding an avoidance region. The avoidance region is the same region as an arrangement region that is one of a right side region and a left side region with respect to a vertical line passing an axis of the stator as seen in the axial direction of the stator core, the one of the right side region and the left side region being a region in which the temperature sensor is arranged and the avoidance region is located above a lower end of the temperature sensor in the gravitation direction.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: November 5, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshitada Yamagishi, Takashi Imakawa, Toshiya Sugiyama, Tetsuro Ichikawa
  • Patent number: 10418889
    Abstract: A stator module pack for an axial flux electric machine is provided. The stator module pack includes a housing for attachment to a stator base and a plurality of stator modules attached to the housing. Each stator module includes a core having at least one winding disposed thereon. A plurality of stator module packs is coupled to a stator base to form a stator of the axial flux electric machine.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: September 17, 2019
    Assignee: Regal Beloit Australia Pty Ltd.
    Inventors: Mark Thiele, Greg Heins, Matthew J. Turner, Hani Chahine
  • Patent number: 10404121
    Abstract: The invention provides a stator for an electric motor comprising a plurality of radially inwardly extending teeth and comprising conductive material incorporated in one or more of the teeth.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: September 3, 2019
    Assignee: GOODRICH ACTUATION SYSTEMS LIMITED
    Inventors: Maamar Benarous, Jerôme A. Socheleau
  • Patent number: 10385856
    Abstract: The disclosure herein includes an electric submersible pump assembly for pumping fluids from a wellbore, which electric submersible pump assembly may include: a pump; a housing coupled to the pump; a body disposed in the housing, wherein the body has a central aperture, an outer surface, and a flow path disposed in the outer surface; and a shaft assembly disposed in the central aperture of the body, wherein the shaft assembly has a central flow path and a port.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: August 20, 2019
    Assignee: Lex Submersible Pumps FZC
    Inventors: Anton Shakirov, Vitaly Koropetskiy, Iaroslav Alekseev, Vadim Batalov, Evgeniy Cheremisinov
  • Patent number: 10355548
    Abstract: A motor includes a stator that has pole cores and a stator coil comprised of unit coils each being concentratedly wound around a corresponding one of the pole cores. Each of the unit coils is comprised of first and second sub-coils that are stacked in two layers in a stacking direction. Each of the first and second sub-coils is spirally wound so that coil sides of the sub-coil overlap each other in an overlapping direction perpendicular to the stacking direction. Each of the unit coils also has, at a single place, a connecting portion that connects the first and second sub-coils of the unit coil. The connecting portion is provided in a coil end of the unit coil. For each of the first and second sub-coils of the unit coil, the connecting portion is located at an innermost periphery of the sub-coil in the overlapping direction of the sub-coil.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 16, 2019
    Assignee: DENSO CORPORATION
    Inventor: Takashi Hirabayashi
  • Patent number: 10355573
    Abstract: A linear vibration motor comprises a frame wherein a coil is secured, and a movable element that comprises a magnet portion and a weight portion, and which is supported elastically within the frame, wherein the movable element comprises guide shafts that protrude in both axial-direction sides; the frame comprises a bottom frame that has a bottom plate portion along the axial direction, and a pair of side frames that have side plate portions and that face the axial direction; the side frame has a bearing retaining portion for holding a bearing that bears a guide shaft, and a connecting portion for connecting the bearing retaining portion to the side plate portion; the bearing retaining portion and the connecting portion are structured integrally with the side plate portion; and the bottom plate portion has an opening portion with which the bearing retaining portion engages.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: July 16, 2019
    Assignee: Nidec Copal Corporation
    Inventor: Yoshinori Katada
  • Patent number: 10340762
    Abstract: A stator for an electric rotary machine including a stator core and a coil, wherein: the coil has plural slot coils and plural connection coils, each slot coil being inserted into the slot, each connection coil connecting the slot coils in a position lying further axially outwards than an axial end face of the stator core, and the coil being constituted in such a way that the slot coil and the connection coil are joined at an abutment portion; and in a hole portion, where the abutment portion is accommodated, of a insulation plate, the connection coil and the slot coil are spaced apart from the insulation plate in the circumferential direction to thereby form a first gap portion.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 2, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kentaro Nagahiro, Tomotaka Iki
  • Patent number: 10323644
    Abstract: The disclosure herein includes an electric submersible pump assembly for pumping fluids from a wellbore, which electric submersible pump assembly may include: a pump; and a motor assembly coupled to the pump, the motor assembly including: a housing; a stator disposed within the housing, wherein the stator has an inner surface having a diameter; a rotor disposed in the stator, wherein the rotor has an outer surface and a magnet; a first bearing assembly disposed around the rotor; and a second bearing assembly disposed around the rotor; wherein the rotor has a length separating the first bearing assembly from the second bearing assembly; and the length divided by the diameter of the inner surface of the stator yields a ratio from 7.00 to 13.00.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: June 18, 2019
    Assignee: Lex Submersible Pumps FZC
    Inventors: Anton Shakirov, Vitaly Koropetskiy, Iaroslav Alekseev, Vadim Batalov, Evgeniy Cheremisinov
  • Patent number: 10320268
    Abstract: A stator module pack for an axial flux electric machine includes a housing for attachment to a stator base, a plurality of stator modules attached to the housing, and a drive unit attached to the housing. Each stator module includes a core having at least one winding disposed thereon. The drive unit is electrically connected to at least one stator module. A plurality of stator module packs and a plurality of drive units are coupled to the stator base to form a stator of the axial flux electric machine.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 11, 2019
    Assignee: REGAL BELOIT AUSTRALIA PTY LTD
    Inventors: Hani Chahine, Pamela Lee, Mark Thiele, Greg Heins
  • Patent number: 10230285
    Abstract: A rotating electric machine includes a ring-shaped cover. The ring-shaped cover includes an outer peripheral portion, an inner peripheral portion, wall portions, an outer peripheral channel, an inner peripheral channel, and radial channels. A coolant supplied into the ring-shaped cover is to flow through the outer peripheral channel by gravity. The coolant is to flow through the inner peripheral channel by gravity. The radical channels include a first radial channel and a second radial channel. The coolant is to flow from the outer peripheral channel to the inner peripheral channel by gravity through the first radial channel. The coolant is to flow from the inner peripheral channel to the outer peripheral channel by gravity through the second radial channel. The coolant is to flow from the second radical channel by gravity through the outer peripheral channel.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: March 12, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuki Ichinoe, Tomotaka Iki
  • Patent number: 10224785
    Abstract: A cooling system for a dynamoelectric machine comprising a cooling jacket for assembly on an outer circumference of a stator of the dynamoelectric machine, a housing for receiving the stator having the mounted cooling jacket such that a hollow chamber, which can be filled with a liquid cooling medium, remains between an outer wall of the cooling jacket and an inner wall of the housing, wherein an inlet opening for inlet of the cooling medium into an inlet region and an outlet opening for outlet of the cooling medium from an outlet region of the hollow chamber are arranged on the housing and a barrier element connected to the cooling jacket for spatial separation of the inlet region from the outlet region is provided. The efficiency of such a cooling system is improved in that the barrier element presses against the inner wall of the housing having increasing pressure difference of the cooling medium in the inlet and outlet region.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: March 5, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Johannes Weis, Christian Schaefer, Stefan Mackowiak, Sebastian Heitz
  • Patent number: 10181763
    Abstract: A motor that includes a stator having an improved structure is provided. The motor includes a stator that includes stator cores wound with a coil, a rotor disposed in the stator and configured to interact with the stator and to rotate, a shaft mounted on the rotor and configured to rotate with the rotor, a printed circuit board (PCB) electrically connected to the coil, an insulator formed of an insulating material and mounted on the stator, and a terminal pin mounted on the insulator to connect the coil with the PCB. A terminal pin accommodating portion that protrudes in an extension direction of the shaft is provided in one side of the insulator and the terminal pin is accommodated in the terminal pin accommodating portion.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 15, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woong Hwang, Yong Woo Nam, Uk Ho Seo, Sung Gu Lee, Su Kwon Jeong, Young Kwan Kim
  • Patent number: 10177633
    Abstract: The subject matter described herein includes a multiphase fractional slot concentrated winding machine. One such machine includes a machine module including a rotor and a stator. The stator includes a plurality of radially extending teeth. Each tooth is individually wound with a coil. The machine further includes a multiphase series converter circuit physically connected to an end of the machine module to energize the coils for multiphase operation.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 8, 2019
    Assignee: ABB Schweiz AG
    Inventors: Ghanshyam Shrestha, Zhiguo Pan, Mario Schweizer, Darren Dale Tremelling, Waqas Mahmood Arshad
  • Patent number: 10158264
    Abstract: Each of claw-shaped magnetic poles is formed with an air gap expanding portion formed on at least a portion of both side portions in a circumferential direction, and an air gap is formed between the air gap expanding portion and tip portions of teeth that is larger than another air gap formed between radial end portions and the tip portions of the teeth. When a circumferential distance between the radial end portion and the tip portion is indicated by ?, and when the air gap is indicated by ?, 3????15? is satisfied. When a claw-tip end face width is indicated by L1, and when a claw-root end face width is indicated by L2, the claw-shaped magnetic pole is formed in a range of 0.20?L1/L2?0.71.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: December 18, 2018
    Assignee: DENSO CORPORATION
    Inventor: Takuya Kudou
  • Patent number: 10003224
    Abstract: A motor assembly for a washing machine including: a stator core having teeth formed along the outer peripheral surface; upper and lower insulators coupled to the upper and lower portions of the stator core to surround the top and underside of the stator core; a first fastening rib protruding from the inner peripheral surface of the lower insulator; a second fastening rib protruding from the inner peripheral surface of the upper insulator to be coupled on the underside thereof to the top of the first fastening rib; and a round-shaped third fastening rib having the underside coupled to the top of the second fastening rib and the top protruding from the top of the upper insulator to be coupled to the underside of a housing in which various parts such as a brake drum and the like are mounted.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: June 19, 2018
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Ji Min Lee, Gyeong Sik Yang
  • Patent number: 9887595
    Abstract: It is designed for traction motors in motor-in-wheels, fans, and direct driving electric machines. The inner stator (1) consists of pole elements (13) comprising external periphery (14), core (15), part of yoke (16), externally wound bobbin (3). The pole elements (13) on inner aluminum housing (4) are stationary fit. In housing (4) on bearings in end bells outer rotor (8) carrying motor-in-wheel (6) or another operating mechanism is sustained. The inner housing (4) is a carrier of the electrical machine and the operating mechanism, laterally closing side plate-carrier of electronic control device.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: February 6, 2018
    Assignee: ALMOTT LTD.
    Inventor: Encho Nikolov Popov
  • Patent number: 9853373
    Abstract: A terminal block connection structure includes: a connector connected to intermediate parts of a plurality of power lines; a bus bar unit including a plurality of bus bars and at least one resin member; a terminal block being configured such that the distal ends of the plurality of power lines are connected to each other via the bus bar unit. The plurality of bus bars each includes a first plate portion fixed to the terminal block and a second plate portion bent from one end of the first plate portion. The connector is fitted to the resin member which is configured to prevent a movement of the connector in at least one direction out of moving directions of the connector.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: December 26, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yousuke Kurono, Yasuhiro Makido, Ryosuke Sasaki
  • Patent number: 9831749
    Abstract: A stator of a three-phase driving type rotary electric machine has phase coils wound around teeth of a stator core. In a specific slot among a plurality of slots of the stator core in which one phase coil directly connected to a power terminal and another phase coil directly connected to a neutral point are adjacently disposed, an inter-phase distance ensuring member is disposed in a gap via which the two phase coils are adjacent, and a temperature sensor is inserted into an insertion hole provided in the inter-phase distance ensuring member.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: November 28, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroshi Hoshina
  • Patent number: 9793773
    Abstract: One embodiment provides a stator of an electric rotary machine, including: a stator core having plural slots; a segmented coil of plural phases; and plural base plates laminated at each end of the stator core in an axial direction. While the stator core and plural coil bars of the segmented coil form a stator core assembly, and the plural base plates and plural end coil connections of the segmented coil form plural base plate assemblies. The stator is configured by the stator core assembly and the plural base plate assemblies laminated at each end of the stator core assembly.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: October 17, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Tomotaka Iki
  • Patent number: 9774226
    Abstract: An apparatus includes a first component and a second component. The second component is located at a first position. The second component includes a first connection to the first component. The first position and the first connection are configured to stiffen an electric motor assembly.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 26, 2017
    Assignee: Seagate Technology LLC
    Inventors: Timothy E. Langlais, Matthew M. McConnell, Paco G. Flores
  • Patent number: 9722468
    Abstract: A rotating electromechanical machine has a rotor having at least one current-carrying winding and at least one rotor-mounted sensor configured to sense a machine property or parameter during machine operation. Rotor-mounted circuitry dynamically modifies at least one property of the current-carrying winding during machine operation in response to the sensed machine property or parameter.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 1, 2017
    Inventors: Roderick A. Hyde, Jordin T. Kare, Lowell L. Wood, Jr.
  • Patent number: 9685834
    Abstract: In a motor, a connection portion between a lead wire and an aluminum wire is provided distant from a terminal block, with a leading end of a winding residing on one of cores that is not adjacent to a core that is at a position where the terminal block is provided.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: June 20, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hironori Yabuuchi, Shinji Kobayashi
  • Patent number: 9671010
    Abstract: A hybrid drive assembly for a motor vehicle, with a main transmission (4) and an electric machine (10) arranged in a hybrid module (6). The electric machine has a rotor (14) that rotates within a rotational space (38). The hybrid module (6) and the main transmission (4) share a common oil system, whose oil temperature is measured. A device (62, 64) is provided which, if a limit value of the oil temperature is exceeded, controls the oil level (58) in the oil sump in the rotation space (38) of the electric machine (10) in such a manner that the rotor (14) becomes immersed in the oil, within the oil sump (58), and can take up oil and throw the oil off again off onto components of the electric machine (10) located within the rotational space.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: June 6, 2017
    Assignee: ZF Friedrichshafen AG
    Inventor: Rayk Gersten
  • Patent number: 9634585
    Abstract: A method of controlling torque ripple in an electrical machine that includes a field winding for creating nominally constant field current using DC current and an armature winding for creating a rotating magnetic field using AC current, calls for superimposing a spatially varying current component on to the DC current of the field winding. Other methods are also disclosed that are suitable for electrical machines that have a winding that is excited with nominal DC current including SRMs, FSMs, and wound-field synchronous motors.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: April 25, 2017
    Assignee: General Electric Company
    Inventor: David Allan Torrey
  • Patent number: 9580160
    Abstract: A ship drive system includes a first and one second drive shaft for driving a respective propulsion unit, wherein each of the electric drive shafts includes at least one speed-variable generator driven by an internal combustion engine for generating a motor voltage having a variable amplitude and variable frequency, and at least one speed-variable drive motor that is supplied with the voltage and coupled to the propulsion unit. The first and second drive shafts can be switched from a first operating state, in which they are electrically disconnected from each other, to a second operating state, in which they are electrically coupled to each other such energy can be transmitted from the at least one generator of the one drive shaft to the at least one drive motor of the other drive shaft. To this end, the at least one generator includes a superconductor winding.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: February 28, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rainer Hartig, Kay Tigges, Michael Wycisk
  • Patent number: 9559559
    Abstract: A stator adapted to be used in a transverse flux electrical machine (TFEM) includes a plurality of phases comprising respective halves sized and designed to receive therein a plurality of cores about a rotational axis. The halves can be separated in angular portions sized and designed to be assembled together and further locate cores therein in respective predetermined positions. A TFEM phase assembly and a kit of phases components sized and designed to assemble a stator are also encompassed by the present application.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 31, 2017
    Assignee: EOCYCLE TECHNOLOGIES INC.
    Inventors: Raphael Nadeau, Daniel Massicotte, Eric Adams, Simon Cote, Patrice Fortin, Jean-Francois Bernier-Synnott
  • Patent number: 9551348
    Abstract: A slim-type fan structure includes a stator (1) and a fan blade (2). The stator includes a circuit board (11) and a plurality of layout circuits (12) disposed to circumference the circuit board (11). The stator (1) includes an axial center (10) at a center portion thereof. The fan blade (2) includes a blade wheel (20), an axial sleeve (21) at a center of the blade wheel (20) and extended axially therefrom, a plurality of blades (22) formed to circumference an outer of the blade wheel (20), and a magnetic unit (23) disposed on the blade wheel (20). Also, the axial sleeve (21) is pivotally attached to the axial center (10). Accordingly, the magnetic unit (23) is formed by a plurality of N and S pole areas (230), (231) arranged alternatively in circular rows and corresponding to the layout circuits (12) along a vertical direction for the slim design.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: January 24, 2017
    Assignee: COOLER MASTER CO., LTD.
    Inventors: Fu-Lung Lin, Shih-Wei Huang, Shui-Fa Tsai
  • Patent number: 9520761
    Abstract: A production method for the laminated iron core includes a first process that segment iron core pieces which respectively have circular arc angles obtained by dividing 360° as an angle of circumference into m are separated from a belt shaped iron core material and mounted on a mount base, the segment iron core pieces are carried to a laminating position of a rotary laminating mechanism by a pusher and the rotary laminating mechanism including the carried segment iron core piece therein is rotated by 360°/m and a second process that the first process is repeated to form an annularly connected iron core piece in which the segment iron core pieces are annularly arranged. The second process is repeated to form a caulked and laminated iron core having a prescribed thickness. During the second process, the segment iron core pieces are caulked and laminated in the rotary laminating mechanism.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: December 13, 2016
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Satoshi Matsubayashi, Yukio Matsunaga, Iwao Myojin
  • Patent number: 9496757
    Abstract: An electric machine including a stator that is provided with at least one exciter unit including a coil, at least two annular yokes and at least one row of intermediate pieces, and a rotor having a structure and at least one receiver unit including at least two series of at least two rows of magnets. Two sides of each yoke include the first teeth, fitting with the intermediate pieces on a face of the exciter unit and alternatingly forming the second north poles and the second south poles. Each series is positioned opposite one face, forming an air gap with the exciter unit, with the electric machine thus including at least two air gaps, with a flux thus circulating inside the electric machine, dividing and regrouping itself in the vicinity of the magnets and of the yokes.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: November 15, 2016
    Assignees: Airbus Helicopters, Sintertech, MBDA France
    Inventor: Damien Mariotto
  • Patent number: 9428265
    Abstract: A wheel design with heat management capability is provided for an aircraft landing gear wheel that is specifically configured to maximize the space available within a landing gear wheel well to support a geared motor assembly that drives the aircraft wheel when the aircraft is on the ground. A thermal interface between the geared motor assembly and a support wall effectively directs heat generated by brakes, motor, or gear components through the wheel ultimately to be shed entirely outside the aircraft to prevent damage to the wheel and motor components. The heat dissipating wheel and motor driver assembly described herein may be retrofitted in an existing aircraft wheel without changing existing landing gear components, including tires, piston, and axle.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: August 30, 2016
    Assignee: Borealis Technical Limited
    Inventor: Isaiah Watas Cox
  • Patent number: 9391500
    Abstract: An electric machine is described. The electric machine includes a rotor comprising a rotor disk and a plurality of permanent magnets magnetically coupled to the rotor disk. The plurality of permanent magnets include a substantially flat profile and are aligned in a substantially planar array. The electric machine also includes a stator comprising a solid stator core and a plurality of coils each wound around a coil insulating member. The stator core includes a plurality of stator teeth extending substantially parallel to an axis of rotation of the rotor.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: July 12, 2016
    Assignee: Regal Beloit America, Inc.
    Inventors: Michael D. Smith, William A. Ziegler, Michael Garrett, Dean James Patterson, Roger C. Becerra, Ludovic Chretien, Darrel Buttram, Steven Peter Camilleri
  • Patent number: 9318923
    Abstract: A laminated iron core and a method for manufacturing the same are provided to secure the lamination strength of the respective iron core pieces thereof, and to provide good magnetic efficiency and to reduce a loss. In a laminated iron core including a first caulking section formed in an area thereof having larger magnetic flux density than other area and a second caulking section formed in the other area, the engagement area A of the recessed sub-sections and projecting sub-sections of the first caulking sections of divided iron core pieces adjoining each other in the laminating direction is set smaller than the engagement area B of the recessed sub-sections and projecting sub-sections of the second caulking sections adjoining each other in the laminating direction.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: April 19, 2016
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Akira Nagai, Jin Oda
  • Patent number: 9306435
    Abstract: Disclosed herein is a stator assembly for a motor including: a stator core which includes a rounded base having a plurality of first holes formed in the vertical direction and a plurality of teeth radially formed on the outer circumferential surface of the base; an insulation coating layer formed on the entire surface of the stator core except the inner face of the base and the periphery of the first hole; and one or more connection parts connected to the rounded base.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: April 5, 2016
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Wang Gyu Jeong, Hee-Sang Kim
  • Patent number: 9199711
    Abstract: A drive method is disclosed. An embodiment includes an operation of at least one drive propeller of the drive system below a first predefinable propeller rotational speed according to a first operating state by operating at least one drive motor, connected to the at least one drive propeller, of the drive system via a first alternating voltage. The method further includes operation of the at least one drive propeller above the first predefinable propeller rotational speed according to a second operating state by operating the at least one drive motor via a second alternating voltage. In a transition from the first operating state into the second operating state or vice versa, the first internal combustion engine is operated at such a rotational speed that the at least one drive propeller is driven at the first propeller rotational speed, and the first alternating voltage is synchronized with the second alternating voltage.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: December 1, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rainer Hartig, Dierk Schröder, Kay Tigges, Michael Wycisk
  • Patent number: 9136738
    Abstract: An electric rotating machine includes a rotor and a stator. The rotor has a plurality of pairs of magnetic poles. The stator includes a stator core and a stator coil that is comprised of a plurality of phase windings wound on the stator core. The stator core has, for each of the phase windings of the stator coil, n circumferentially-consecutive single-phase slots, in which only the phase winding is received, per magnetic pole of the rotor, where n is a natural number not less than 2. Each of the phase windings of the stator coil has first to kth sections that are sequentially arranged from one end to the other end of the phase winding, where k is a natural number not less than 2. The first section is received in different ones of the single-phase slots for the phase winding from the kth section.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: September 15, 2015
    Assignees: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Kazumasa Ikeda, Toru Wakimoto, Yoshimitsu Takahashi
  • Patent number: 9030036
    Abstract: The invention concerns an arrangement for a direct drive generator for a wind turbine, which generator comprises a stator with several stator segments each stator segment having at least one stator element for the power generation and which generator comprises a rotor pivotable around a center axis of the generator and relatively to the stator with several rotor segments each rotor segment having at least one rotor element for the power generation, wherein said arrangement comprises at least one stator segment and at least one rotor segment, and wherein the at least one stator segment and the at least one rotor segment are able to be at least temporarily supported against each other. The invention concerns further a direct drive generator comprising such an arrangement, a wind turbine comprising such a direct drive generator as well as a method for the assembly of the direct drive generator.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: May 12, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventor: Henrik Stiesdal
  • Patent number: 9006953
    Abstract: A stator assembly structure for an axial flux electric machine is designed. The back iron for each silicon steel disk stator is formed into a specific structure with tooth-like protrusions for allowing the same to be integrated with the disk-type stator seat, while the disk-type stator seat is made of a material suitable for casting or mold forming. A coil is mounted on the disk stator, and a stator assembly is achieved by integrating the stator, the coil and the stator seat. The stator and the disk-type stator seat of the stator assembly are manufactured by using a one-piece cast or one-piece mold forming method so as to enable the contact surfaces of the stator and the stator seat to engage with each other even more tightly, and consequently enable the heat generated from the coil to be transmitted rapidly from the disk stator to the disk-type stator seat.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: April 14, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Tseng-Te Wei, Shian-Hsuan Huang, Huan-Lung Gu, Shih-Ming Lo, Li-Ju Cheng
  • Patent number: 8994244
    Abstract: A motor is provided for use in a machine. The motor includes a segmented stator comprising magnetically isolated core segments.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: March 31, 2015
    Assignee: Nidec Motor Corporation
    Inventor: Gary E. Horst
  • Patent number: 8963399
    Abstract: An induction machine short circuit stop is interposed between a brace and a machine component, such as a generator building bolt, in order to limit component motion during a short circuit event. The stop is a block of resilient non-conductive material that is oriented proximal the machine component at a desired spaced gap. Gap dimensions may be modified by use of different height stop blocks and/or shims. The stop is affixed to the brace by straps, cordage or fasteners, such as threaded studs. The stop is suitable for retrofitting existing induction machines in the field or in refurbishing service centers.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: February 24, 2015
    Assignee: Siemens Energy, Inc.
    Inventors: Avinash M. Tekawade, David F. Yurko, Domingo J. Fumero, Sean Woosley
  • Patent number: 8944784
    Abstract: A motor device includes a main body, an assembling body, a stator and a rotor. The main body includes a first bearing hole and a plurality of first connectors, and all distances between each of the first connectors and an axle of the first bearing hole are the same. The assembling body has a second bearing hole. The stator includes a passage and a plurality of second connectors, the second connectors are coupled to the first connectors respectively to have the stator assembled in the main body, and the passage and the first bearing hole are coaxial. The rotor is disposed inside the passage and two ends of the rotor are installed in the first bearing hole and the second bearing hole respectively. By having both the stator and the rotor positioned by the main body, a gap between the rotor and the stator can be maintained consistently.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: February 3, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Kun-Yi Liang, Shu-Er Huang, Yang-Guang Liu, Yueh-Ju Tang, Chi-Hsing Chen
  • Patent number: 8937414
    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: Grant
    Filed: April 26, 2012
    Date of Patent: January 20, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hyeokjin Song, Kwangwook Chun, Jacho Kim, Jiseong Park, Seungdo Han
  • Publication number: 20140375167
    Abstract: Embodiments of the present invention provide methods for manufacturing an even-wall rotor or stator that do not suffer from drawbacks of the prior art. Even-wall rotors or stators produced according to those methods are also provided. In one embodiment, a method for manufacturing a rotor or stator for use in a mud motor is provided. The method includes providing a vacuum chamber; providing a metal electrode at least partially disposed in the vacuum chamber; providing a mold disposed in the vacuum chamber; and melting a portion of the electrode with a direct current arc, the molten metal flowing into the mold ring.
    Type: Application
    Filed: August 27, 2014
    Publication date: December 25, 2014
    Inventors: David W. TEALE, Robert P. BADRAK
  • Publication number: 20140368079
    Abstract: Embodiments provide a method for assembling a motor. The method may include providing a first rotor, a second rotor and a stator; and assembling the first rotor, the second rotor and the stator such that the stator is arranged between the first rotor and the second rotor.
    Type: Application
    Filed: February 13, 2013
    Publication date: December 18, 2014
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Chiew Leong Wong, Ralph Stephen Viskochil
  • Patent number: 8896170
    Abstract: A method for making a rotary electric machine comprises the steps of: preparing a core (18) having a plurality of pole expansions and a plurality of windings (100, 200, 300) made of electrically conductive material on the pole expansions, where at least a part of the windings (100, 200, 300) is made from a conductor wire having a free end (14) that can be connected electrically to a mains power supply; stably coupling to each other at least two free ends (14) of different windings (100, 200, 300) so as to connect them to a single power supply terminal; twisting the coupled ends (14) together to form a single electrical termination (5, 6, 7) twisted along a principal line of extension of the electrical termination (5, 6, 7).
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: November 25, 2014
    Assignee: SPAL Automotive S.r.l.
    Inventor: Pietro De Filippis
  • Publication number: 20140339947
    Abstract: A multi-piece stator includes a pole cluster, a flux ring, and an insulation member. A rotor cavity is located at a center of the pole cluster, and multiple flux poles extend radially outward from the rotor cavity in a circumferential arrangement. The pole cluster includes a flux impedance feature between each of the multiple flux poles, and multiple bridge features maintaining the arrangement of the flux poles. The flux ring includes a ring wall having a minimum wall thickness and a pole cluster cavity defined by the ring wall. The insulation member has a shape corresponding substantially to a shape of the pole cluster and is located to effectively cover an outside surface of the flux poles. The pole cluster, the insulation member, and a field generation coil wrapped around a portion of the insulation member and a portion of the pole cluster are inserted into the pole cluster cavity.
    Type: Application
    Filed: November 21, 2013
    Publication date: November 20, 2014
    Applicant: Lasko Holdings, Inc.
    Inventors: Pei Hui Wen, Chia Hung Chang
  • Patent number: 8829742
    Abstract: The present invention is a high efficiency permanent magnet machine capable of maintaining high power density. The machine is operable over a wide range of power output. The improved efficiency is due in part to copper wires with a current density lower than traditional designs and larger permanent magnets coupled with a large air gap. In a certain embodiment wide stator teeth are used to provide additional improved efficiency through significantly reducing magnetic saturation resulting in lower current. The machine also has a much smaller torque angle than that in traditional design at rated load and thus has a higher overload handling capability and improved efficiency. In addition, when the machine is used as a motor, an adaptive phase lag compensation scheme helps the sensorless field oriented control (FOC) scheme to perform more accurately.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: September 9, 2014
    Inventors: Xinzhang Wu, Hanzhou Liu, Yang Hu, Louis Chow, Jon Harms, Martin Epstein, Wei Wu
  • Patent number: 8829749
    Abstract: A method for making a rotary electric machine comprises the steps of: preparing a core (18) having a plurality of pole expansions and a plurality of windings (100, 200, 300) made of electrically conductive material on the pole expansions, where at least a part of the windings (100, 200, 300) is made from a conductor wire having a free end (14) that can be connected electrically to a mains power supply; stably coupling to each other at least two free ends (14) of different windings (100, 200, 300) so as to connect them to a single power supply terminal; twisting the coupled ends (14) together to form a single electrical termination (5, 6, 7) twisted along a principal line of extension of the electrical termination (5, 6, 7).
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: September 9, 2014
    Assignee: SPAL Automotive S.r.l.
    Inventor: Pietro De Filippis
  • Patent number: 8816557
    Abstract: A device, including a rotor, a stator, a coil wound around the stator, wherein the stator has a coil support structure having at least one side edge arranged along a line which is not parallel to a line extending from an axis of the rotor through a center of the coil.
    Type: Grant
    Filed: November 7, 2010
    Date of Patent: August 26, 2014
    Assignee: Electric Gorilla, LLC
    Inventors: John D Long, David R Vaden, Craig B Rutherford
  • Publication number: 20140197711
    Abstract: A drive unit for a door includes an electronically commutated multipole motor having: a stator part configured to be arrangable at a stationary structural component part; and a rotor part configured to be gearlessly connectable to a rotationally drivable element. The stator part and the rotor part include sheet metal elements stacked in a package-like manner. The sheet metal elements of the stator part and the sheet metal elements of the rotor part extend parallel to one another.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 17, 2014
    Inventor: Sven BUSCH