End Turn Supports Patents (Class 310/260)
  • Patent number: 8853913
    Abstract: A mounting structure for slot paper in a motor stator. The slot paper is embedded in stator slots and includes a paper bottom, a paper side, and a paper front. A lug boss is protruded between two adjacent tooth block segments and protrudes from the inner wall of an outer ring. Two ends of the slot paper extend out of each stator slot. Two ends of the paper bottom are locked between the lug bosses respectively arranged on the upper end insulator and the lower end insulator. One end of each tooth block segment is provided with a clip slot and the paper front near the opening is embedded therein. The structure is simple, has a precise slot paper positioning function, does not occupy space of the stator slot, maximizes the slot filling ratio of the slots, and thus improves the overall performance of the motor.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: October 7, 2014
    Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.
    Inventor: Songfa Tang
  • Patent number: 8847459
    Abstract: An axial self-supported coil for a slotless rotating electric motor. The axial self-supported coil includes one coil body formed by winded electrical conductors, with a head at each end, the electrical conductors in the coil body being substantially coplanar with the motor rotation axis, each coil head having an axial thickness, the axial self-supported coil having a conductor filling factor, characterized in that at least one of the electrical conductors is a multi-stranded conductor, in that a deformation arrangement of the multi-stranded conductor increases the conductor filling factor and in that a bending arrangement of the multi-stranded conductor reduces the axial thickness of each coil head.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 30, 2014
    Assignee: Portescap SA
    Inventors: Julien Baudey, Cyril Baud, Alexis Montagnat-Rentier
  • Publication number: 20140246946
    Abstract: An electrical machine is provided. The electrical machine includes a stator having at least one winding, and a mechanical assembly acting on the winding for providing a radial force at the winding for controlling a stiffness of the winding.
    Type: Application
    Filed: August 13, 2012
    Publication date: September 4, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Mukesh Kumar Jaluthariya, Neelima Tailor
  • Patent number: 8786146
    Abstract: An electrical machine including a casing (1), an oil inlet hole (7), an oil passage (2), oil outlet holes (3), a stator retainer (8), a casing end cover (10), a stator iron core (5), winding coils (6), slot insulations (12) and oil-guides (4). The oil passage (2) is located inside the casing (1) and links with the oil inlet hole (7) of the casing (1) and the oil outlet holes (3) of the stator retainer (8). The oil outlet holes (3) are located above the winding coils (6) and the oil-guides (4) are located between the oil outlet holes (3) and the winding coils (6). Oil entering from the oil inlet hole (7) pours onto the winding coils (6) by the guidance of the oil-guides (4) after flowing through the oil passage (2) and flowing out of the oil outlet holes (3). The winding coils of the electrical machine can be effectively cooled and the electrical machine can achieve higher thermal durability. An oil cooling method for the electrical machine is also provided.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: July 22, 2014
    Assignee: Jing-Jin Electric Technologies (Beijing) Co., Ltd.
    Inventors: Wei Cai, Yi Zheng, Xinglian Yuan
  • Publication number: 20140152128
    Abstract: A stator of a rotary electric machine includes a stator core and coils. The stator core is provided with a plurality of slots extending in an axial direction and being spaced apart from one another in a circumferential direction. The coils are wound around through the slots. The coils include coil end portions which protrude outward in the axial direction from an end surface of the stator core. The stator includes a restricting member situated on an inner side of the coil end portions in the radial direction. The restricting member serves to prevent deformation of the coil end portions inward in the radial direction.
    Type: Application
    Filed: November 25, 2013
    Publication date: June 5, 2014
    Applicant: Fanuc Corporation
    Inventors: Shinobu Takano, Yohei Arimatsu
  • Publication number: 20140097710
    Abstract: A spacer for mechanically stabilizing and electrically insulating an end winding in an electric motor includes an elastic nose having a free end. A planar, electrically insulating sheet is integrally formed at an end of the nose located opposite the free end. Such spacers are used in an electric motor having an iron core, whose teeth are surrounded by coils whose end windings laterally project from the iron core. The spacers are press-fitted inside openings formed by the end windings and the teeth, so that the end windings are covered by the sheet of the press-fitted spacer in the direction of an air gap of the electric motor in each case.
    Type: Application
    Filed: October 7, 2013
    Publication date: April 10, 2014
    Inventors: Guillaume Mougin, Christophe Dehouck, David Panet
  • Patent number: 8664813
    Abstract: The phase ring assembly includes a support ring carrying a plurality of phase rings provided with connection arms that are bent to the phase rings. The connection arms are placed between the phase rings and the support ring. The support ring has recessed seats housing the connection arms.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: March 4, 2014
    Assignee: Alstom Technology Ltd.
    Inventors: Jean Charles Ast, Marc Zimmermann
  • Patent number: 8659204
    Abstract: A stator includes a stator core, slots, coils, an interphase insulation sheet, and wedges. The interphase insulation sheet is provided between coil ends of adjacent coils having different phases among the coils. The interphase insulation sheet includes a first sheet body portion, a second sheet body portion, and a first bridge portion. The first and second sheet body portions respectively have first and second retaining pieces. The first retaining piece projects from the first sheet body portion toward the second sheet body portion in the developed state of the interphase insulation sheet. The second retaining piece projects from the second sheet body portion toward the first sheet body portion in the developed state of the interphase insulation sheet. The first and second retaining pieces are retained by projecting portions of the wedges.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: February 25, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yutaka Shoji, Takuo Nozawa
  • Patent number: 8629596
    Abstract: The invention relates to an end turn arrangement in a stator of a dynamoelectric machine. In order to reduce, in a simple fashion, the volume required for the end turns of the form-wound coils, the stator is formed of segments (1) that have a substantially circular arc-shaped cross-section and can be combined into a stator by adding one or more other segments (1) having the same design. Each segment (1) has recesses (6, 7), within which at least one first form-wound coil (3), which is bent outward in the radial direction of the stator in the region of the end turns, and at least one second form-wound coil (4), which is bent inward in the radial direction of the stator in the region of the end turns, are arranged in the form of a tiered winding.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: January 14, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johannes Germishuizen, Arne GrĂ¼ning, Martin Junge
  • Patent number: 8608462
    Abstract: According to one embodiment, a motor stator includes a substantially cylindrical stator iron core and insulators. The stator iron core includes a yoke, teeth, and U-shaped grooves. The U-shaped grooves are formed on the circumference of the yoke in the axial direction. The insulators each include an outer circumference wall, hoisting drums, inner guards, and at least three engagement claws. The engagement claws are located spaced apart in the circumferential direction on the outside of the outer circumference wall and fitted in axial-direction ends of the U-shaped grooves, respectively. One of the engagement claws is arranged such that a first circumferential-direction side portion of the engagement claw is in contact with a first side wall of one U-shaped groove. Another is arranged such that a second circumferential-direction side portion of the engagement claw is in contact with a second side wall of another U-shaped groove.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: December 17, 2013
    Assignee: Fujitsu General Limited
    Inventor: Yoshihiro Taema
  • Patent number: 8604656
    Abstract: An electric submersible pump (ESP) motor includes a polymer or ceramic component made by curing a thermosetting polymer in situ in the ESP motor, wherein the thermosetting polymer is selected from the group consisting of cyanate ester, bismaleimide, polyimide, benzoxazine, a preceramic polymer, and a mixture thereof, or the thermosetting polymer is a hybrid polymer having less than 50% by weight of an epoxy component and a second component selected from the group consisting of cyanate ester, bismaleimide, polyimide, benzoxazine, a preceramic polymer, and a mixture thereof.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: December 10, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: William Goertzen, Gregory H. Manke, Aider Matarrita, Melissa Ver Meer
  • Patent number: 8581460
    Abstract: An armature for a rotating electrical machine, including an armature core and a coil wound around the armature core. The segment conductor includes a joint extension portion that extends in the axial direction relative to the armature core from at least one end portion of a conductor edge portion. The coil has an n-layer winding structure and includes an inter-layer joint portion on an axial direction outer side of the armature core. The inter-layer joint portion joining a first and second layer side joint extension portions. At least one of the first and second layer side joint extension portions forming a pair to be joined by the inter-layer joint portion includes an offset bend portion, and the first layer side joint extension portion and the second layer side joint extension portion are joined such that respective joint surfaces thereof oppose each other in a circumferential direction.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 12, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Keiichi Shinohara, Takuma Takabayashi
  • Patent number: 8575816
    Abstract: A refrigerant compressor has a compressor housing in which a cylinder housing and an electric motor are fastened to one another. The electric motor includes a stator provided with a stator bore, the coil core of which is provided with receiving grooves for accommodating a stator winding having any given number of windings, coil groups, and poles. The coil core is preferably composed of interconnected stator segments and the stator winding in the region of the end faces of the coil core has winding heads which are each situated outside the receiving grooves. The winding heads of the stator winding are pressed against an insulating element which is situated between the coil core and the winding heads and which has an arbitrary number of projecting additional insulating sections in a peripheral edge region opposite the stator bore.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: November 5, 2013
    Assignee: ACC Austria GmbH
    Inventors: Helmut Zeinlinger, Hans Peter Schoegler
  • Patent number: 8575795
    Abstract: A stator includes an annular substrate, an outer-diameter portion of the substrate provided at a tip end of an outer-diameter leg of a bobbin, the substrate having a smaller inner diameter than an inner diameter of the stator core. When stator resin provides sealing, the outer-diameter portion of the substrate can be supported by the tip end of the outer-diameter leg of the bobbin, and an inner-diameter portion of the substrate can be supported by a mold. Accordingly, even when the moment of inertia of a molded motor is increased, the substrate can be prevented from being deformed by a molding pressure with the stator resin, without the area of the substrate being decreased.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: November 5, 2013
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Kenichi Aoki, Fumihiko Kitani, Tomonori Hirose
  • Patent number: 8552611
    Abstract: The present invention provides a coil end structure of a rotating electric machine which is able to miniaturize the coil end structure without having an insulation coating of a flat wire being affected. A coil segment 4 is composed of a plurality of flat wires. A surface of each flat wire confronting another in a slot 2a (legs 41 and 41) is identical to the surface confronting the other at a coil end (head 42).
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: October 8, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshihisa Matsuoka, Kazuhito Hiraga
  • Patent number: 8508088
    Abstract: A wiring component for a motor coil includes: a wire coil configured by a plurality of wire segments arranged in a circumferential direction so as to form a ring shape, each of the wire segments including an arc-shaped main-body portion made of a conductive wire rod bent in an arc shape, protruding portions formed at both end portions of the main-body portion and upright portions respectively formed at end portions of the protruding portions; an inner clip formed with a plurality of first holding portions at an outer circumferential surface of the inner clip; and an outer clip formed with a plurality of second holding portions at an inner circumferential surface of the outer clip. The inner clip and the outer clip are connected to each other so as to hold the wire coil between the first holding portions and the second holding portions.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: August 13, 2013
    Assignee: Aisin Seiko Kabushiki Kaisha
    Inventors: Toshiya Sugiyama, Jun Abiko, Yasutoshi Yamada, Hiroyuki Nagata
  • Patent number: 8466598
    Abstract: An electric rotating machine includes a multi-phase stator coil that is wound on a stator core in a distributed winding manner. Each of phase windings of the stator coil is formed of an electric wire bundle which includes a plurality of insulation-coated electric wires that are electrically connected to one another. Each of the electric wire bundles forming the phase windings has in-slot portions, which are respectively received in corresponding slots of the stator core, and turn portions that are located outside the slots of the stator core to connect adjacent pairs of the in-slot portions. Each of the electric wire bundles further includes a plurality of insulating layers that are respectively formed at predetermined positions, at which the turn portions of the electric wire bundle overlap those of the other electric wire bundles, so as to surround the electric wires of the electric wire bundle.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: June 18, 2013
    Assignee: Denso Corporation
    Inventors: Masahiko Osada, Takuzou Mukai
  • Patent number: 8461741
    Abstract: A support system is provided for a dynamoelectric machine having a stator and stator bars connected to a connection ring assembly. The support system includes at least one stator bar support bracket and one or more support rings connected to the stator bars. A connection ring support bracket supports the connection ring assembly. A mount is connected to the connection ring support bracket. The mount permits axial movement of the stator bars, the stator bar support bracket, the support rings, and the connection ring assembly due to thermal expansion experienced during operation of the dynamoelectric machine.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: June 11, 2013
    Assignee: General Electric Company
    Inventor: David Norwood Dorsey
  • Patent number: 8461742
    Abstract: A connection ring assembly and connection ring support system for a dynamoelectric machine is provided. The connection ring assembly includes a plurality of connection rings, and a clamp element disposed around a portion of the connection rings. The clamp element provides axial and tangential support to the plurality of connection rings. The connection ring support system includes one or more primary spring bars connected to the connection ring assembly. The primary spring bars permit radial and tangential movement of the connection ring assembly. One or more secondary spring bars are connected to the primary spring bars, and permit axial movement of the connection ring assembly.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: June 11, 2013
    Assignee: General Electric Company
    Inventors: Jayashankar KN, Sanjeev Kumar Jha, Shravan Kumar Bhagavatula, Santhosh Kumar Kompally
  • Patent number: 8441166
    Abstract: A device (10) for connecting together end winding parts (1) of stator bars (2) of an electric generator includes a first and a second element (11, 12) having sloped facing surfaces (13) defining two trapezoidal seats each housing a trapezoidal cursor (14), and one or two screws (15), axially fixed and rotatably movable with respect to the first and second element (11, 12) and having a threaded portion inserted in a threaded through hole (17) of the cursor (14).
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: May 14, 2013
    Assignee: ALSTOM Technology Ltd.
    Inventors: Hossein Safari Zadeh, Damir Novosel
  • Patent number: 8436506
    Abstract: A stator for an electric motor includes a stator coil including a wire pair with respective ends that are joined with a ring. The ring is positioned around the wire pair and joined to the wire pair by a metal joining process.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: May 7, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Pei-Chung Wang, John S. Agapiou, John Patrick Spicer
  • Publication number: 20130106238
    Abstract: Provided is a motor including a motor shaft, a rotor; a stator including a stator core and a stator coil, the stator coil being wound around the stator core so that coil ends on respective sides of the stator coil serving as turned back parts project axially outwardly beyond respective axial direction end surfaces of the stator core, a casing accommodating the rotor and the stator, and a sealing body charged into the casing to seal the entire stator or a part of the stator including the coil ends on the respective sides. A side surface on a radially inner side of a specific coil end of the coil ends on the respective sides is inclined so as to displace outwardly in a radial direction with close to a tip of the specific coin end.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 2, 2013
    Applicant: Kobelco Construction Machinery Co., Ltd.
    Inventor: Kobelco Construction Machinery Co., Ltd.
  • Patent number: 8421302
    Abstract: According to one embodiment, there is provided a rotating electrical machine including a core, a coil extending from the core, and an electromagnetic shield which is provided outside the core, and has a plurality of shoulders projecting toward the coil. The coil includes an insulator covering outside of a conductor, a resistance layer formed on a surface of the insulator and contacting the core, and at least one potential grading layer formed on a surface of the insulator adjacent to the resistance layer. A boundary between the resistance layer and potential grading layer is provided at a position farther from the core than a point on a surface of the coil, where a distance between the coil and a shoulder of the electromagnetic shield closest to the core is the shortest.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: April 16, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Harakawa, Tetsushi Okamoto, Yoshiyuki Inoue, Tooru Ootaka, Hiroshi Hatano, Mikio Kakiuchi, Toshihiko Shinoda, Makoto Kawahara, Masashi Kobayashi, Wataru Nakamura, Ken Nagakura, Masamitsu Sakuma
  • Patent number: 8390159
    Abstract: A stator includes a stator coil formed of electric wires which include a joined pair of first and second electric wires. The first electric wire has a lead portion led out from the radially inner periphery of a first slot of a stator core and including a crossover part. The crossover part crosses over an axial end face of an end part of the stator coil from the radially inside to the radially outside of the axial end face; the end part protrudes from an axial end face of the stator core. The second electric wire has a lead portion led out from the radially outer periphery of a second slot of the stator core. The lead portions of the electric wires are joined together with a joint formed therebetween. The joint is positioned closer to the axial end face of the stator core than the crossover part is.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: March 5, 2013
    Assignee: Denso Corporation
    Inventors: Akihito Koike, Mitsuru Katoh, Masashi Yoshida
  • Patent number: 8384258
    Abstract: A stator includes a stator coil that is formed of a plurality of electric wires each being comprised of an electric conductor having a substantially rectangular cross section and an insulating coat covering the electric conductor. The electric wires include a pair of first and second electric wires each having an end portion where the electric conductor is not covered by the insulating coat. Each of the end portions of the two electric wires includes a joined part at a distal end thereof; the joined parts of the end portions are joined together. At least one of the first and second electric wires has a bent part that is bent only once and adjoins the joined part of the end portion of the electric wire. The end portion of the at least one of the first and second electric wires includes at least part of the bent part.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: February 26, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akihito Koike, Mitsuru Katoh, Masashi Yoshida, Akira Takasaki
  • Patent number: 8378550
    Abstract: An electric machine including a housing, and a stator mounted relative to the housing. The stator includes a body including a first end portion that extends to a second end portion and a plurality of stator windings that extend between the first and second end portions. A sleeve member is mounted to the stator and covers a portion of the stator windings at one of the first and second end portions. The sleeve member is configured and disposed to guide a coolant over the portion of the stator windings to remove heat from the stator.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: February 19, 2013
    Assignee: Remy Technologies, L.L.C.
    Inventor: Michael D. Bradfield
  • Publication number: 20130022163
    Abstract: An electromagnet comprises a plurality of nested freestanding electrically insulating former layers, and electrically conductive wire wrapped around the outsides of the freestanding electrically insulating former layers to define a multilayer electrical coil in which adjacent layers of the multilayer electrical coil are spaced apart by intervening freestanding electrically insulating former layers. Electrically energizing the multilayer electrical coil generates a magnetic field inside the multilayer electrical coil. In some embodiments the electrically conductive wire is bare wire not having electrical insulation. In some embodiments the former layers comprise a ceramic material. In some such embodiments the electromagnet further comprises a ferromagnetic core disposed inside the multilayer electrical coil. An electric motor employing such an electromagnet as a stator pole is also disclosed.
    Type: Application
    Filed: July 22, 2011
    Publication date: January 24, 2013
    Inventors: Brett T. Goodyear, Robert W. Emond, William H. Yeadon
  • Patent number: 8339002
    Abstract: An end winding is described for a stator of an electrical machine. The end winding includes at least two round connectors via which the current is passed out from the winding bars of the stator, as well as a plurality of supporting brackets, via which the end winding is attached to the stator. The end winding has at least two round connectors having a radial section at whose end a phase connection block is in each case arranged. At least two phase connection blocks of one phase are arranged alongside one another in the circumferential direction. The adjacent phase connection blocks are connected via at least one pin element and is mounted at least partially integrally in recesses in the mutually facing side surfaces of the phase connection blocks. A method for fitting an end winding such as this is also described.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: December 25, 2012
    Assignee: ALSTOM Technology Ltd
    Inventors: Matthias Banziger, Daniel Hediger
  • Patent number: 8304940
    Abstract: A stator that includes a cylindrical stator core, which has a plurality of slots that are provided at predetermined intervals in a circumferential direction and open toward an inner peripheral surface of the stator core; and a coil, which has a coil end portion protruding from an axial end of the stator core.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: November 6, 2012
    Assignee: Aisin Aw Co., Ltd.
    Inventors: Satoshi Murakami, Takamasa Takeuchi
  • Publication number: 20120228989
    Abstract: A stator for a rotary electric machine includes: a stator core in a cylindrical shape with plural slots formed at an inner circumferential surface; plural coil segments inserted in the slots from one end surface side of the stator core; and plural coil end plates electrically connected with the coil segments on another end surface side of the stator core, wherein the coil segments respectively include: one leg portion; another leg portion; and a curved portion that is continuously formed between the one leg portion and the other leg portion, wherein the coil end plates respectively include: a plate portion in a flat plate shape; and a pair of extended portions, and wherein end portions of the leg portions of the coil segments are connected to the extended portions. It is possible to improve assembility and attain downsizing by reducing the volume of coil end portions for the stator.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takeomi OKIMITSU, Koichi Oku
  • Patent number: 8242656
    Abstract: The present invention discloses a motor. A rotor and bearings are installed first and then copper wires are wrapped by a machine. Therefore, the copper wires wrapped are denser and thinner that a space filling factor is improved and an entire size of the motor is reduced. In addition to saving of electricity consumption and improvement of motor performance, the bearings are directly enclosed in two insulation plates to isolate from ambient environment, so that dust contamination can be reduced and noise from operation can be decreased, thereby extending a service life of the motor. Furthermore, packing and transportation costs can be even saved. Additionally, the insulation plates include plural insertion slots for insertion with copper plates which are electrically connected with a motor power cord. Thus, an inner stator can be connected with the power cord by plugging, so as to save labor work and time.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: August 14, 2012
    Inventor: Yu-Ming Lin
  • Patent number: 8232693
    Abstract: A resolver is configured to determine the rotational position of a first member that is selectively rotatable about an axis with respect to a second member. The resolver includes a stator core, a plurality of wire windings operatively connected to the stator core, a winding support between the windings and the stator core, and a cover at least partially enclosing the windings. One of the cover and the winding support defines a pin that is fittable inside a hole in the second member. The pin functions as a locating feature, which ensures that the stator is accurately mounted to the second member. Because the pin is part of the winding support or the cover, the locating feature does not entail the use of an extra part, thereby simplifying assembly of the stator.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: July 31, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Kevin P Coleman, Edward L. Kaiser
  • Patent number: 8217541
    Abstract: A wiring component for a motor coil includes a wire coil configured by a plurality of wire segments arranged in a circumferential direction so as to form a ring shape, each of the wire segments including an arc-shaped main-body portion made of a conductive wire rod bent in an arc shape, protruding portions formed at both end portions of the main-body portion, and upright portions respectively formed at end portions of the protruding portions in a manner of bending one of end portions of each of the protruding portions so that the upright portions protrude in a direction vertical relative to a planar surface including the main-body portion. The wire coil is arranged to form a plurality of layers, thereby forming a cylindrical shape, and the upright portions, at which the adjacent wire segments contact each other in the circumferential direction thereof, are electrically connected to each other.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: July 10, 2012
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Toshiya Sugiyama, Jun Abiko, Yasutoshi Yamada, Hiroyuki Nagata
  • Patent number: 8203251
    Abstract: A stator includes a stator core, a stator coil comprised of a plurality of electric wires, and at least one restraint. Each of the electric wires has a plurality of in-slot portions received in slots of the stator core and a plurality of turn portions that are located outside of the slots to connect the in-slot portions. The restraint is mounted to end parts of the turn portions belonging to a turn portion group of the electric wires to restrain relative radial movement between the turn portions of the turn portion group. All the turn portions of the turn portion group protrude from the same slot of the stator core. The end parts of the turn portions respectively adjoin the in-slot portions of the electric wires received in the same slot of the stator core and align with each other in a radial direction of the stator core.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: June 19, 2012
    Assignee: Denso Corporation
    Inventors: Atsuo Ishizuka, Shinji Kouda
  • Patent number: 8203249
    Abstract: The invention provides for flux-shields wrapped around the flux-sources at the core-end of large power generators. They prevent overheating of all core-end parts under all abnormal conditions of operation. A first flux-shield is an electrically conductive cylindrical shell concentric with rotating end-windings, held outside the retaining ring. The rotating flux source induces eddy currents in the first flux-shield whose flux repels the source flux. Only a small part of the rotating source flux is hence received by all the core-end parts, thereby greatly reducing their temperatures. A second flux-shield comprises an electrically conductive tape wrapped over the ground-insulation of stator bars protruding from the core. Alternating flux generated by the stator bars induces eddy currents in the second flux-shield whose flux repels the source flux. Only a small fraction of the source flux is hence received by all core-end parts, thereby greatly reducing their temperatures.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: June 19, 2012
    Inventor: Dantam K. Rao
  • Patent number: 8203250
    Abstract: A submersible electric pump motor comprises an unvarnished stator structure having stator windings formed of conductors. The stator windings form end coils at each end of the stator for each phase. The end coils are tied to three arc-shaped, metal segments, each having an opening and positioned circumferentially within a circumferential groove. The metal segments are welded to the interior of the housing to provide a rigid surface. High temperature strings are wound through the openings in each metal segment and around the end coils for each phase to tie each end coil of that phase to that metal segment. This prevents the end coils of each phase from twisting during startup, sliding into the slots, and moving inwards towards a rotating rotor.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: June 19, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Larry J. Parmeter, Van J. McVicker, Brett D. Leamy
  • Patent number: 8193674
    Abstract: An arrangement having at least two generator bars for a stator of an electrical generator which are electrically connected to one another via a respective bar end is characterized, according to the invention, by the fact that the respective bar ends, which are electrically connected to one another, of the at least two generator bars are braced with respect to one another by means of a tape.
    Type: Grant
    Filed: November 23, 2006
    Date of Patent: June 5, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Waldemar Kowalski, Christoph Lehmann, Claus-Georg Richter, Karlheinz Spiess
  • Patent number: 8174160
    Abstract: A group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine are provided. The first winding head segments of the three stator windings differ in form such that the first winding head segments of at least two of the three stator windings are differently tilted in radial direction of the electric machine and the length of the three stator windings is substantially the same.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: May 8, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventor: Henrik Stiesdal
  • Publication number: 20120098385
    Abstract: Embodiments of the invention relate generally to lead path configurations in generator rotors and, more particularly, to a support apparatus for a main lead and generator rotors incorporating such a support apparatus. In one embodiment, the invention provides a support apparatus for a main lead of a generator rotor, the support apparatus comprising: a cross-sectionally L-shaped body having: a first portion; and a second portion substantially perpendicular to the first portion, wherein the first portion includes an arcuate first surface for interfacing with a centering ring of the generator rotor and an arcuate second surface adapted to be substantially parallel to a rotor shaft of the generator rotor; a main lead passage extending along the arcuate first surface of the first portion and through the second portion.
    Type: Application
    Filed: October 25, 2010
    Publication date: April 26, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sanjeev Kumar Jha, Richa Awasthi, James Jonathan Grant, Madhu Bharadwaj Sridharan
  • Publication number: 20120098384
    Abstract: An example end cap of a stator segment is provided for use in locating wires in a segmented stator assembly in desired positions. The end cap generally includes a body and an inboard wall. An identifier is defined by the inboard wall of the end cap for use in determining wire sizes to be used with the end cap. Terminal pockets are provided in the body for receiving the wires and making desired electrical connections, and steps located in the terminal pockets help secure the connectors in the terminal pockets. Plateaus, and troughs defined in the plateaus, are located outside the terminal pockets for use in trimming wires received in the terminal pockets as desired. And, retaining structures are located around the end cap to help with locating the wires in the desired positions.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Applicant: EMERSON ELECTRIC CO.
    Inventors: William Wang, Paul G. Michaels, J. Scott Rose, Donald R. Shaw, Jason J. Jurkowski
  • Publication number: 20120098380
    Abstract: An example end cap of a stator segment is provided for use in locating wires in a segmented stator assembly in desired positions. The end cap generally includes a body and an inboard wall. An identifier is defined by the inboard wall of the end cap for use in determining wire sizes to be used with the end cap. Terminal pockets are provided in the body for receiving the wires and making desired electrical connections, and steps located in the terminal pockets help secure the connectors in the terminal pockets. Plateaus, and troughs defined in the plateaus, are located outside the terminal pockets for use in trimming wires received in the terminal pockets as desired. And, retaining structures are located around the end cap to help with locating the wires in the desired positions.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Applicant: EMERSON ELECTRIC CO.
    Inventors: William Wang, Paul G. Michaels, Brian P. Fogarty, J. Scott Rose, Donald R. Shaw, Jason J. Jurkowski
  • Publication number: 20120091853
    Abstract: A support system is provided for a dynamoelectric machine having a stator and stator bars connected to a connection ring assembly. The support system includes at least one stator bar support bracket and one or more support rings connected to the stator bars. A connection ring support bracket supports the connection ring assembly. A mount is connected to the connection ring support bracket. The mount permits axial movement of the stator bars, the stator bar support bracket, the support rings, and the connection ring assembly due to thermal expansion experienced during operation of the dynamoelectric machine.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 19, 2012
    Inventor: David Norwood Dorsey
  • Patent number: 8138640
    Abstract: Heat discharging property of the stator coil end is improved effectively in a rotating electric machine. A motor as the rotating electric machine includes a stator and a rotor. The stator includes a stator core and resin mold coil ends provided on both axial ends thereof. Column-shaped projections projecting in the axial direction are provided on axial side surfaces of resin mold coil ends at a plurality of positions. Cooling oil supplied from above the resin mold coil ends effectively cools the resin mold coil ends.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: March 20, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Soken, Inc.
    Inventors: Hiroaki Urano, Eiji Yamada, Kazutaka Tatematsu, Yasuji Taketsuna, Atomi Arakawa, Akihiro Tanaka, Sadahisa Onimaru, Hirohito Matsui, Ryotaro Okamoto
  • Patent number: 8138644
    Abstract: A motor includes a plurality of bus wires of a common phase which are put together before being guided in a common passage to minimize the space arranged to guide the bus wires. Also, the bus wires of a common phase are easily insulated from those of different phases, and an axial height of the motor is reduced. Further, a radial width necessary to guide the bus wires is reduced, and an axial height of the motor including a sensor portion which detects a rotary position of the motor is reduced. Also, the bus wires are easily extended from the armature, and an amount of work required to connect the bus wires and the terminals is reduced. Furthermore, the connection terminal portion does not interfere with the bus wires when they are being guided.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: March 20, 2012
    Assignee: Nidec Corporation
    Inventors: Nakaba Kataoka, Motofumi Otsuji, Yoshiaki Yamashita
  • Patent number: 8134274
    Abstract: Dynamoelectric device and stator bar therefor, where the stator bar includes a linear portion for positioning in a slot of a stator core, the slot extending in a radial direction relative to an axis of the stator, and an end arm portion having an involute-on-cone bend relative to the linear portion and an elongated cross-section that is substantially aligned with the radial direction of the slot.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 13, 2012
    Assignee: General Electric Company
    Inventor: James Oldham Lambert
  • Patent number: 8125118
    Abstract: The invention concerns a winding head isolation element (1) with a body (2, 3) having a first longitudinal side (5), a second longitudinal side (6), a first transversal side (7) and a second transversal side (8), and a tongue portion (9) projecting from the first longitudinal side (5), the body (2, 3) and the tongue portion (9) being made of a flat material. It is endeavored to keep the efforts and costs for the mounting of the isolation element on a winding head small. For this purpose, the body (2, 3) is deformable around an axis (4) extending transversely to the tongue portion (9) and has at least one opening (21, 22) extending transversely to the tongue portion (9), said tongue portion (9) being adapted for insertion through the opening.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: February 28, 2012
    Assignee: Secop GmbH
    Inventor: Iwer Nissen
  • Publication number: 20120043834
    Abstract: The invention relates to a DC motor 1 comprising a cylindrical coil carrier 7; 17 comprising wire guide element 9; 10, 12 for guiding a first winding wire 80; 180 and a second winding wire 81; 181 of an air-gap winding on both side end sections, wherein the first winding wire 80; 180 and the second winding wire 81; 181 each comprise rectangular winding segments 20; 120, wherein the rectangular winding segments 20; 120 of the second winding wire 81; 181 are disposed overlapping on the cylindrical coil carrier 7; 17 and the wire guide elements 9; 10, 12 are designed for guiding the first winding wire 80; 180 and the second winding wire 81; 181 past each other.
    Type: Application
    Filed: December 14, 2009
    Publication date: February 23, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Wolfgang Krauth, Tilo Koenig
  • Publication number: 20120038241
    Abstract: An apparatus axial stresses a stator winding of an electrical machine, the winding including a plurality of winding bars, the ends of the winding bars passing axially out of a core of a stator and forming a widened end winding at least one axial end face of the core. A plurality of winding supports is distributed circumferentially and substantially at a right angle with respect to the end winding on the at least one axial end face of the core. At least one axially acting compression spring device is configured to support the plurality of winding supports on the at least one axial end face of the core and to axially stress the plurality of winding supports. A readjusting device communicates with at least one of the plurality of winding supports and has an axially adjustable contact surface, the at least one axially acting compression spring device being axially supported on the core and on the axially adjustable contact surface of the readjusting device.
    Type: Application
    Filed: September 12, 2011
    Publication date: February 16, 2012
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: Hossein Safari Zadeh
  • Patent number: 8115352
    Abstract: A dynamoelectric machine includes a rotor having a plurality of adjacent coils; a spaceblock disposed between adjacent coils so as to define first and second cavities adjacent the spaceblock and between mutually adjacent coils; and the spaceblock includes a channel disposed in a coil facing surface of the spaceblock for intercepting and redirecting a circulating coolant flow to the first cavity.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: February 14, 2012
    Assignee: General Electric Company
    Inventors: Shriniwas Ananda Neje, Rebinth Jose Robin, Samir Armando Salamah, Vidyapati Tiwari
  • Patent number: 8093777
    Abstract: In one aspect, a stator is provided having a first cylindrical surface with a plurality circumferentially spaced winding slots, each winding slot extending along an axial length of the first cylindrical surface and formed to embed a segment of a single stator winding, Each stator winding is pre-formed as a closed loop and two substantially parallel segments of each stator winding formed to be embedded in a first and a second winding slot of the stator, with the second winding slot being the third adjacent winding slot to the first winding slot. Each of the three stator windings has a first winding head segment leaving the winding slots in axial direction of the stator, the first winding head segment of a first winding of the three stator windings describing in space in parts a combination of a rotation about an axis and a translation along that axis.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: January 10, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventor: Henrik Stiesdal