High-speed Rotor Type Patents (Class 310/262)
  • Patent number: 9812917
    Abstract: A generator rotor system having various features is disclosed. The generator rotor system has at least one main stage generator rotor with winding-pole sets spaced annularly about the rotor. The tendency of the windings to distort and or displace under the centrifugal force of the spinning rotor is ameliorated by a winding retention member disposed axially outboard of the winding-pole sets. The winding retention member may also have a one or more cooling oil routing hole to enhance the flow of cooling oil among the windings.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: November 7, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Richard A. Himmelmann
  • Patent number: 9712012
    Abstract: An armature winding includes a plurality of distributed winding bodies that are each produced by winding a single conductor wire that is insulated, jointless, and continuous, and that has a constant cross-sectional area perpendicular to a longitudinal direction, the conductor wires include first through third coil end portions that link first through fourth rectilinear portions and first through fourth rectilinear portions, and are formed such that radial widths w? of the first through fourth rectilinear portions are wider than radial widths w of the first through third coil end portions, and first gaps are formed between radially adjacent coil end portions to allow a cooling medium to pass through the first gaps.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: July 18, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hirohisa Yokota, Atsushi Sakaue, Hironori Tsuiki, Tatsuro Hino, Shinkichi Sawa, Masashi Nakamura, Shogo Okamoto
  • Patent number: 9548640
    Abstract: A rotor is disclosed, which includes a plurality of axially extending slots disposed about the rotor; a plurality of conductors radially stacked within each of the axial slots; and an axially extending subslot at a radially inward end of each of the slots. In each slot, a cooling path is provided, extending radially outward from the subslot. The cooling path includes at least one manifold, each manifold including at least one ingress passage, at least one egress passage axially distanced from the ingress passage, and a plurality of axially extending passages in fluid connection at a first end with one of the at least one ingress passages, and at a second end with one of the at least one egress passages. Each of the plurality of axially extending passages is disposed at a different radial depth in the slot from each other axially extending passage.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: January 17, 2017
    Assignee: General Electric Company
    Inventors: Anil Kumar Tolpadi, Christopher Anthony Kaminski, Gustavo Adolfo Ledezma, Rebinth Jose Robin
  • Patent number: 9260978
    Abstract: A system for heating a stator segment includes a first frame member, a plurality of arms extending radially from the first frame member, and a heater releasably connected to each arm. The system further includes a biasing element for biasing each heater away from the first frame member.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: February 16, 2016
    Assignee: General Electric Company
    Inventors: James Bradford Holmes, Charles Van Buchan, Jason Matthew Clark
  • Patent number: 9190879
    Abstract: A laminated rotor for an electric machine is disclosed. In an embodiment, the rotor comprises a plurality of stacked laminations. Each lamination includes a plurality of radially extending slots arranged about a circumference thereof, and a first chamfer on a surface of each of the slots, wherein the surface mates with a wedge. The first chamfer connects the surface and a first face of the lamination. A stud member passes longitudinally through a hole in the lamination stack, a first end flange member on a first end of the lamination stack, and a second end flange member on a second end of the lamination stack. A first fastener is affixed to a first end of each of the at least one stud member; and a second fastener affixed to a second end of each of the at least one stud member.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: November 17, 2015
    Assignee: General Electric Company
    Inventors: Dmitry Yurevich Semenov, Anthony Salvatore Arrao, Richard Nils Dawson, Evgeny Victorovich Kazmin, Timothy Gerald Schmehl, Yury Danilovich Vinitsky
  • Patent number: 9154007
    Abstract: A laminated rotor for an electric machine is disclosed. In an embodiment, the rotor comprises a plurality of stacked laminations. Each lamination includes a plurality of radially extending slots arranged about a circumference thereof, and a first chamfer on a surface of each of the slots, wherein the surface mates with a wedge. The first chamfer connects the surface and a first face of the lamination. A stud member passes longitudinally through a hole in the lamination stack, a first end flange member on a first end of the lamination stack, and a second end flange member on a second end of the lamination stack. A first fastener is affixed to a first end of each of the at least one stud member; and a second fastener affixed to a second end of each of the at least one stud member.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: October 6, 2015
    Assignee: General Electric Company
    Inventors: Dmitry Yurevich Semenov, Anthony Salvatore Arrao, Richard Nils Dawson, Evgeny Victorovich Kazmin, Timothy Gerald Schmehl, Yury Danilovich Vinitsky
  • Patent number: 9059613
    Abstract: An amortisseur assembly comprises an end winding amortisseur. The end winding amortisseur comprises a body, at least one finger element, and a stop block. The body comprises a first edge. The finger element extends from the first edge of the body, and comprises a first surface. The stop block can attached to the first surface. The amortisseur assembly can further comprise a slot amortisseur so that the stop block abuts an end of the slot amortisseur. The amortisseur assembly can be assembled on a radial-flow cooled rotor. A method of forming an amortisseur assembly for a rotor comprises providing one or more slot amortisseurs and one or more of the end winding amortisseurs. The slot amortisseurs can be provided by shortening existing slot amortisseurs. The slot springs can replace existing slot springs, and the one or more slot springs can be longer than the existing slot springs.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: June 16, 2015
    Assignee: AGT Services, Inc.
    Inventors: Vincent Rigosu, Jr., Michael Bresney, Kurt Carlone
  • Patent number: 9000628
    Abstract: Described herein is a ball joints universal rotary motor, a manufacturing method and a working mechanism thereof. The ball joints universal rotary motor comprises a housing, a spherical-cap shaped stator body, and a rotor body configured to be secured within the stator body. The stator body is made from a permanent magnet. The rotor body comprises multiple layers of armatures and multiple spacer layers. The multiple layers of armatures are symmetrically distributed along the axis of the rotor body. A spacer layer is provided between two adjacent layers of armatures. The multiple layers of armatures and multiple spacer layers are securely connected by a bolt. The bolt and the rotor body are axially connected. The rotor body is of a spherical shape. Each layer of the armatures is wound with two layers of coils: a first layer and a second layer. The motor as provided is configured to realize movement in multiple directions.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: April 7, 2015
    Inventor: Kuokwa Ho
  • Patent number: 8698367
    Abstract: An electric machine is provided including a rotor having a plurality of magnets retained on the rotor. The plurality of magnets are retained via a sleeve. The sleeve is retained via a band. The band includes a stacked plurality of washer laminations. Each of the plurality of washer laminations is electrically insulated from an adjacent washer lamination.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: April 15, 2014
    Assignee: Synchrony, Inc.
    Inventors: Christopher Sortore, Victor Iannello, Robert Jett Field
  • Patent number: 8468681
    Abstract: A method for establishing a wind turbine generator with one or more Permanent Magnet (PM) rotors. The method comprises the steps of: manufacturing a generator prepared for taking one or more PM rotors, manufacturing one or more rotors comprising a plurality of holding means prepared for retaining PM material, mounting substantially non-magnetized PM material prepared for magnetization in said holding means before or after said one or more rotors are mounted in said generator, connecting a magnetization system for magnetizing said PM material in the generator, and magnetizing said PM material with said magnetization system. The invention also relates to a wind turbine nacelle, a wind turbine comprising said wind turbine nacelle and use of a wind turbine.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: June 25, 2013
    Assignee: Vestas Wind Systems A/S
    Inventors: Lars Helle, Philip Richard Jacobsen Carne Kjaer, Morten Lindholm, Flemming Buus Bendixen, Ion Boldea
  • Patent number: 8365391
    Abstract: A method for establishing a wind turbine generator with one or more Permanent Magnet (PM) rotors. The method comprises the steps of: manufacturing a generator prepared for taking one or more PM rotors, manufacturing one or more rotors comprising a plurality of holding means prepared for retaining PM material, mounting substantially non-magnetized PM material prepared for magnetization in said holding means before or after said one or more rotors are mounted in said generator, connecting a magnetization system for magnetizing said PM material in the generator, and magnetizing said PM material with said magnetization system. The invention also relates to a wind turbine nacelle, a wind turbine comprising said wind turbine nacelle and use of a wind turbine.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: February 5, 2013
    Assignee: Vestas Wind Systems A/S
    Inventors: Lars Helle, Philip Richard Jacobsen Carne Kjaer, Morten Lindholm, Flemming Buus Bendixen, Ion Boldea
  • Patent number: 8350432
    Abstract: An electric machine system includes an electric machine and a companion device. The electric machine has a stationary member and a movable member that, by interaction of magnetic fields, at least one of moves relative to the stationary member or generates electricity when moved relative to the stationary member. One of the stationary member and the movable member includes a permanent magnet. The companion device is coupled to the electric machine to communicate mechanical movement with the movable member. In certain instances, the electric machine system has adaptations for operation of the electric machine system subsea and/or in a corrosive environment.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: January 8, 2013
    Assignee: Direct Drive Systems, Inc.
    Inventors: Paulo Guedes-Pinto, Daniel M. Saban, John Stout, Venkateshwaran Krishnan, Dennis Strouse, Alex Ivaschenko
  • Patent number: 8232702
    Abstract: A high-speed sleeveless rotor for an electric machine is provided. The rotor includes a shaft rotatable about a longitudinal axis, and a rotor core circumscribing at least a portion of the shaft wherein the rotor core includes an axially oriented slot. The slot includes a radially outer slot opening, a radially inner slot floor, and a slot sidewall extending therebetween. The slot floor includes a topstick attachment member extending radially outward from the slot floor and configured to engage a topstick positioned in the slot opening and the slot sidewall includes a shoulder configured to engage the topstick, preventing radially outward movement of the topstick.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 31, 2012
    Assignee: GE Aviation Systems, LLC
    Inventors: Jan Zywot, Xiaochuan Jia, Norman K. Austin
  • Patent number: 8051710
    Abstract: A midlength balanced rotor comprises a rotor assembly for rotation about an axis of rotation defining at least one of an axially extended, radially concentric, centerline borehole; an array of radially or tangentially distributed, axially extended pockets; and a series of radially or tangentially distributed, axially extended slots. At least one balance weight is positioned within at least one of the axially extended, radially concentric, centerline borehole, the array of radially or tangentially distributed, axially extended pockets, or the radially or tangentially distributed, axially extended slots to balance the rotor assembly. Alternatively, at least one balance correcting mass is removed from at least one of the axially extended, radially concentric, centerline borehole, the array of radially or tangentially distributed, axially extended pockets, or the radially or tangentially distributed, axially extended slots to balance the rotor assembly.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: November 8, 2011
    Assignee: General Electric Company
    Inventors: Jeremy Daniel Van Dam, Christopher Anthony Kaminski, Blake Weldon Wilson
  • Patent number: 7919898
    Abstract: A rotor core assembly for an electric motor includes a stack of laminations and first and second end plates disposed at opposite ends of the stack of laminations. A plurality of concentric fastener holes extend through the laminations and the end plates for receiving stainless steel pins. Each pin has a head against one of the end plates, and each pin has spaced apart grooves thereon extending from the other end plate. A stainless steel collar engages each of the pins and contacts one of the end plates. Each collar has a deformed portion in at least one of the grooves of the pin.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: April 5, 2011
    Assignee: Nidec Motor Corporation
    Inventors: Weirong Wang, Thomas E. Kirkley, Jr.
  • Patent number: 7791233
    Abstract: A high-torque electric motor having a rotor supported by an elongated torque arm comprising a pair of frustoconical-shaped support members. The rotor has a spherical-shaped outer surface and a complementarily shaped stator cavity. The spherical magnetic elements and the conical support members cooperate to brace the rotor against deflection along its rotational axis.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: September 7, 2010
    Inventor: Michael T. Attard
  • Publication number: 20090140601
    Abstract: In a rotary electric machine, for ensuring a cooling air flow between a rotor iron core and a stator iron core without enlarging a rotor, a separation preventing device is provided at a position between adjacent slots so as to correspond to each other at a shrink-fitting position where a retaining ring is shrink-fitted to a rotor iron core. Since a separation preventing position of the retaining ring is located at the shrink-fitting position, it is possible to reduce a length of the retaining ring itself so as not to be adjacent to the end portion of the stator iron core. Accordingly, a gap between the rotor iron core and the stator iron core does not reduce. As a result, it is possible to ensure a cooling air flow between the rotor iron core and the stator iron core without enlarging the rotor.
    Type: Application
    Filed: November 28, 2008
    Publication date: June 4, 2009
    Inventors: Takayasu Tanaka, Hirohide Murayama, Kenichi Hattori, Kazuhiko Takahashi
  • Publication number: 20090108703
    Abstract: A rotary apparatus, in which a rotor can rotate stably when it rotates at a high speed, can rotate at a relatively high speed by the torque of a highly reliable induction motor. The rotary apparatus comprises a rotor shaft and an induction motor. The induction motor includes a motor rotor core fixed to the rotor shaft, conductors disposed in the motor rotor core and a motor end ring for assembling and connecting the conductors, and can rotate the rotor shaft at a high speed by the torque. The rotor shaft is provided with a member that covers the motor end ring.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 30, 2009
    Applicant: EBARA CORPORATION
    Inventors: Hiroyuki KAWASAKI, Matsutaro MIYAMOTO
  • Publication number: 20080315715
    Abstract: A rotor core assembly for an electric motor includes a stack of laminations and first and second end plates disposed at opposite ends of the stack of laminations. A plurality of concentric fastener holes extend through the laminations and the end plates for receiving stainless steel pins. Each pin has a head against one of the end plates, and each pin has spaced apart grooves thereon extending from the other end plate. A stainless steel collar engages each of the pins and contacts one of the end plates. Each collar has a deformed portion in at least one of the grooves of the pin.
    Type: Application
    Filed: June 21, 2007
    Publication date: December 25, 2008
    Applicant: EMERSON ELECTRIC CO.
    Inventors: Weirong Wang, Thomas E. Kirkley, Jr.
  • Publication number: 20080122311
    Abstract: A rotor assembly for a high speed electric machine and associated methods are provided. The rotor assembly includes a shaft, a plurality of laminations positioned along an axial extent of the shaft forming a lamination stack, a pair of end plates each positioned on one of the respective ends of the lamination stack, and an internal clamping tube substantially surrounding major portions of the axial extent of the shaft, positioned between the shaft and inner portions of the lamination stack, and contacting the pair of endplates to provide clamping of the lamination stack.
    Type: Application
    Filed: June 13, 2007
    Publication date: May 29, 2008
    Applicant: The Board of Regents, The University of Texas System
    Inventors: Michael D. Werst, Michael C. Lewis, Jon Kitzmiller, Stephen Manifold
  • Patent number: 7365465
    Abstract: A rotor structure for an electric motor includes a cylindrical rotor core assembly and a plurality of permanent magnets disposed on an outer circumference of the rotor core assembly. Wrapped around the rotor core assembly is a bandage to secure the permanent magnets in place, wherein the bandage has a bandage edge arranged in proximity of an end surface of the rotor core assembly. In order to securely fix the bandage edge in place, a securing ring is disposed radially over the bandage edge of the bandage to hold the bandage against the rotor core assembly.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: April 29, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventor: Felix Ludwig
  • Patent number: 7122931
    Abstract: An improved generator rotor (30) and a method of repairing an existing generator rotor (12) are disclosed. Methods consistent with the present invention provide techniques for repairing existing stress-damaged rotors (12) to remove stress-induced cracks (29), without requiring new retaining rings (16), to significantly extend the useful life of a generator without the cost and complexity of conventional repair techniques. Improved generator rotors (30) consistent with the present invention provide a tooth-top design that is more resistant to stress-induced cracking than conventional designs, resulting in new generators with longer useful lives.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: October 17, 2006
    Assignee: Siemens Power Generation, Inc.
    Inventors: Jiping Zhang, Kevin Light, William Cannon Gardner, Randy Edward Whitener
  • Patent number: 7122932
    Abstract: According to one embodiment, the present invention provides a rotor assembly. The exemplary rotor assembly includes a plurality of rotor laminations, which cooperate to form a rotor core, capped at each end by end members. Extending through the rotor core and the end members, a plurality of rotor channels is configured to receive electrically conductive members therethrough. Each of the electrically conductive members has external portions, which extend beyond the rotor channel, and an interior portion that is housed within the rotor channel. By flexing the external portions, a compression force that secures the laminations and the end members with respect to one another may be provided. Advantageously, the external portions may be fused to one another and/or to the end members. As one example, the external portions may be fused through the introduction of a molten metal into the end member.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: October 17, 2006
    Assignee: Reliance Electric Technologies, LLC
    Inventors: Rajmohan Narayanan, Boris A. Shoykhet, David I. Driscoll
  • Patent number: 7098569
    Abstract: A rotor assembly for use in an electric motor or generator where the mass of the rotor assembly is reduced with respect to conventional rotor assemblies. In addition, the rotor assembly is configured to be scalable to different sized electric motors. Within the rotor assembly, the rotor hub, the shaft, and the permanent magnets can independently or collectively be modified to have a reduced mass. In one aspect, a portion of the rotor hub adjacent to the shaft is configured with passages and spokes. In another aspect, an intermediate hub with lightening holes is provided between the shaft and the rotor hub. In yet another aspect, a large diameter hollow shaft replaces a portion of the rotor hub. In yet another aspect, the permanent magnets are configured to have an arc-shape, which permits the thickness of the magnets to be reduced without reducing the efficiency of the magnets.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: August 29, 2006
    Assignee: Ballard Power Systems Corporation
    Inventors: Raymond Ong, Timothy J. Allen, Roy I. Davis, Tod R. Tesch
  • Patent number: 7095821
    Abstract: An rotor assembly (30) for an imaging X-ray tube (32) is provided. The imaging X-ray tube rotor assembly (30) includes at least partially a magnetic non-corrosive material. A method of producing the imaging tube X-ray rotor assembly (30) is also provided including forming a rotor core (52) at least partially from a magnetic non-corrosive material.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: August 22, 2006
    Assignee: General Electric Company
    Inventors: Gregory A. Steinlage, Alexander M. Blok, Mohamed Osama
  • Patent number: 7030535
    Abstract: A rotor core and winding assembly including: separable rotor core sections assembled to form the rotor core, where the core sections each have a substantially circular perimeter and are axially aligned when assembled as the core, and the winding assembly includes a pre-assembled superconducting field winding and a winding support, wherein the winding support extends between adjacent core sections in the assembled rotor core.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: April 18, 2006
    Assignee: General Electric Company
    Inventor: Yu Wang
  • Patent number: 6984910
    Abstract: A coil retention system for a rotor of an electrical generator, such as an aircraft generator, that includes one or more components made of a high strength, lightweight composite material. By making one or more of the coil retention system components of a high strength, lightweight composite material, the generator can rotate at relatively high speeds, and can be built with a relatively small space between the generator rotor and stator. This allows the generator to supply greater output power without increasing the generator's size and/or weight.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: January 10, 2006
    Assignee: Honeywell International, Inc.
    Inventors: Edward M. Down, Kieran Doherty, David E. Stout
  • Patent number: 6979929
    Abstract: A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each coil includes a respective outer face including two end portions and two side portions, and a respective inward-facing edge including two end sections and two side sections. The rotor further includes a first outer wedge positioned between neighboring side portions of the first and second coils, and a first inner wedge positioned between neighboring side sections of the first and second coils. The first inner wedge is coupled to the first outer wedge so that the first outer wedge is at least partly retained from moving radially outward away from the shaft.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: December 27, 2005
    Assignee: Honeywell International, Inc.
    Inventors: Gerald E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P. J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J. S. McDowall
  • Patent number: 6979928
    Abstract: A magnetic shield assembly for confining rotor windings in a generator includes a substantially cylindrical tubular shield of two or more part-annular segments adapted to enclose the rotor windings; a plurality of axially spaced rings located on the tubular shield; and a plurality of annular spacers radially between the tubular shield and the plurality of rings and axially between adjacent rings to thereby present physical barriers to axial migration of the plurality of rings.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: December 27, 2005
    Assignee: General Electric Company
    Inventor: Ronald Ralph Cairo
  • Patent number: 6977459
    Abstract: Locking strips secure winding modules to a rotor. The locking strips have paired deep and shallow recesses along a long edge and are disposed in a groove along the rotor. Upon assembly of the winding module, the deep recesses of the locking strips are aligned, enabling the winding supports of the winding module to engage in the deep recesses. The strips are then axially displaced in opposite directions relative to one another to engage portions of the strips within grooves of the winding supports and edges of the shallow recesses to straddle the winding supports. Pins are received in aligned holes of the locking strips in the locked configuration. Consequently, the modular winding is retained against axial and peripheral movement and outward displacement along a parallel face of the rotor shaft.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: December 20, 2005
    Assignee: General Electric Company
    Inventors: Christopher Anthony Kaminski, Robert John Nygard, James Pellegrino Alexander, Yu Wang
  • Patent number: 6977460
    Abstract: Grooves are formed in the pole faces of a multi-pole rotor body. Spacers are provided for insertion into the grooves and have radial outward projections for engaging between shield segments and enclosure rings. By providing spacers with variable width projections, the axial gap between adjacent enclosure rings and shield segments is adjusted to adjust the ventilation flow from within the rotor body.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: December 20, 2005
    Assignee: General Electric Company
    Inventors: Christopher Anthony Kaminski, Robert John Nygard, Nancy Lee Nichols, Anand Shankar Tanavde
  • Patent number: 6975057
    Abstract: The invention relates to a rotary electric machine including a stator, powered by a polyphase current, having a magnetic circuit with teeth forming intervening slots for receiving electrical conductors. The magnetic circuit is made up of an assembly of sectors defining air-gaps intersecting the teeth at half-width.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: December 13, 2005
    Assignee: Moteurs Leroy-Somer
    Inventors: Pascal Gauthier, Eric Coupart, Jacques Saint-Michel, Christophe Gilles
  • Patent number: 6940196
    Abstract: A high-speed rotor, in particular a permanent-magnet rotor (1) for dynamoelectric machines of high power density, and also its production are proposed. The permanent-magnet rotor (1) comprises a spindle (2) and armouring (4) coaxial with the spindle (2), a number of ceramic permanent magnets (3a-3d) that are distributed between the spindle (2) and the cylindrical sheath (4), and also a gap-filling filling compound. Said filling compound made of filled polymers seals the gaps in the permanent-magnet rotor (1) by injection moulding. Due to the remanent pretension, the permanent magnets (3a-3d) remain permanently rigidly joined even against high centrifugal forces.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: September 6, 2005
    Assignee: MS-Technologies GmbH
    Inventor: Hansjürg Gysin
  • Patent number: 6885120
    Abstract: A rotor configuration for an electric machine includes a rotor shaft and a multi-pole rotor core secured to the rotor shaft. A plurality of field winding modules are respectively disposed over each pole of the multi-pole rotor core. An enclosure is disposed over the field winding modules for containing the field winding modules over the rotor core. A magnetic shield is disposed over the field winding modules between the field winding modules and the enclosure. The simplified construction reduces manufacturing time and costs.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: April 26, 2005
    Assignee: General Electric Company
    Inventors: Christopher Anthony Kaminski, Yu Wang
  • Patent number: 6844655
    Abstract: A winding module for an electric machine is provided wherein the winding module comprises a flat field winding that is angled at an end turn and wherein a vertex of the flat field winding is aligned with an axis of rotation. The vertex provides a predetermined axial offset so as to compensate for a radial expansion of the flat field winding when it is disposed to a centrifugal force.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: January 18, 2005
    Assignee: General Electric Company
    Inventors: Christopher Anthony Kaminski, Robert John Nygard, Yu Wang
  • Publication number: 20040232795
    Abstract: A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each coil includes a respective outer face including two end portions and two side portions, and a respective inward-facing edge including two end sections and two side sections. The rotor further includes a first outer wedge positioned between neighboring side portions of the first and second coils, and a first inner wedge positioned between neighboring side sections of the first and second coils. The first inner wedge is coupled to the first outer wedge so that the first outer wedge is at least partly retained from moving radially outward away from the shaft.
    Type: Application
    Filed: June 15, 2004
    Publication date: November 25, 2004
    Inventors: G. E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P.J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J.S. McDowall
  • Publication number: 20040217662
    Abstract: An interconnecting assembly for a rotor assembly of a dynamoelectric machine is provided. The interconnecting assembly may be part of a conductive path generally extending from a radially inward section of the rotor assembly to a winding located at a radially outward section of the rotor assembly. The interconnecting assembly may be made up of a flexible member (44) comprising a bend (50). The interconnecting assembly may be further made up of a connector (70) connected to the flexible member to pass axial and radial forces that develop during operation of the machine. The positioning of the connector relative to the flexible member may be arranged so that an effect of an axial force on a radius of curvature of the bend and an effect of a radial force on that radius of curvature are opposed to one another. This leads to lower peaks of mechanical stress at the flexible member (44) (e.g.
    Type: Application
    Filed: December 30, 2003
    Publication date: November 4, 2004
    Inventors: Jiping Zhang, Robert R. Messel, Randy E. Whitener, Peter J. Clayton, Larry Zeller
  • Publication number: 20040212258
    Abstract: An electrical motor/generator is provided with at least one of a superconducting rotor, a stator including dovetailed winding dividers, and a stator cooling arrangement with at least one cooling tube per winding slot positioned such that each armature winding is thermally coupled to at least one cooling tube.
    Type: Application
    Filed: April 28, 2003
    Publication date: October 28, 2004
    Applicant: General Electric Company
    Inventors: Evangelos Trifon Laskaris, James Pelligrino Alexander, Kiruba Sivasubramaniam
  • Patent number: 6791230
    Abstract: A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each coil includes a respective outer face including two end portions and two side portions, and a respective inward-facing edge including two end sections and two side sections. The rotor further includes a first outer wedge positioned between neighboring side portions of the first and second coils, and a first inner wedge positioned between neighboring side sections of the first and second coils. The first inner wedge is coupled to the first outer wedge so that the first outer wedge is at least partly retained from moving radially outward away from the shaft.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: September 14, 2004
    Assignee: Honeywell International, Inc.
    Inventors: Gerald E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P. J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J. S. McDowall
  • Publication number: 20040135463
    Abstract: A superconducting rotor assembly includes an axial shaft and a winding support structure. A torque tube is connected to this winding support structure. An interconnection assembly mechanically couples the torque tube to the axial shaft. This interconnection assembly is configured to convert a torsional torque load experienced by the torque tube to a tangential torque load which is provided to the axial shaft.
    Type: Application
    Filed: January 6, 2004
    Publication date: July 15, 2004
    Applicant: American Superconductor Corporation, a Delaware corporation
    Inventors: James F. Maguire, Peter M. Winn
  • Patent number: 6759771
    Abstract: A coil support wedge for a high speed generator is integrally constructed and includes a plurality of flow passageways. Because it is integrally formed, the support wedge is substantially fluid tight. Thus, it is less susceptible to cooling fluid leakage from the flow passageways, which increases the overall reliability of the generator into which the wedge is installed.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: July 6, 2004
    Assignee: Honeywell International, Inc.
    Inventors: Kieran P. J. Doherty, Edward W. Down, William M. Scherzinger, David E. Stout, Simon L. Waddell
  • Patent number: 6751842
    Abstract: A method of constructing a rotor for use in a high speed controlled-pole electric machine includes the steps of positioning an inner layer of remagnetizable permanent magnetic material over substantially an entire circumference of a rotor core exterior surface, and positioning a outer layer of remagnetizable permanent magnetic material positioned over substantially an entire circumference defined by said inner layer of remagnetizable permanent magnetic material. The inner layer of permanent magnetic material can have a first set of magnetic properties and the outer layer of permanent magnetic material can have a distinct second set of magnetic properties. The layers of remagnetizable permanent magnetic material can be formed from a plurality of magnetic blocks. The method can include the step of binding the layers of remagnetizable permanent magnetic material to the rotor using high strength wire.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: June 22, 2004
    Assignee: Precise Power Corporation
    Inventors: John F. Roesel, Jr., Ronnie J. Barber
  • Publication number: 20040104629
    Abstract: A rotor is disclosed for a super-conducting synchronous machine comprising: a rotor core; a super-conducting coil extending around at least a portion of the rotor core, said coil having coil side sections on opposite sides of said rotor core; a vacuum housing covering at least one of said coil side sections, and a conductive shield over said vacuum housing and coil side sections.
    Type: Application
    Filed: March 25, 2003
    Publication date: June 3, 2004
    Applicant: General Electric Company
    Inventors: Yu Wang, Konrad Roman Weeber, Kiruba Sivasubramaniam, Robert John Nygard, Xianrui Huang
  • Publication number: 20040075349
    Abstract: The engine (2) has a rotor (5) rotationally mounted about a rotational axis (A) and is provided with a superconductive winding (10) arranged in a winding support (9). In order to fix the winding support inside an external rotor housing (7), a rigid connecting device (8a) having a hollow cylindrical connecting element (12c) made of fiber reinforced plastic is provided on the torque transmitting side (AS). The connecting element (12c) is configured as a single piece and consists of end parts located on the front face and a central part located between the latter, wherein the end parts are corrugated in peripheral direction and are non-corrugated in the central part. The end parts of the connecting element (12c) are connected to and engage with one another in a non-positive fit manner in groovelike recesses of flangelike end pieces (12a, 12b) made of metal.
    Type: Application
    Filed: September 8, 2003
    Publication date: April 22, 2004
    Inventors: Markus Boss, Michael Frank, Adolf Khn, Peter Massek, Wolfgang Nick, Peter van Hasselt
  • Patent number: 6703733
    Abstract: A multi-pole electric machine rotor assembly includes a rotor forging including a rotor body having poles 13 with pole faces and a winding module including a plurality of field windings positioned adjacent the pole faces and winding insulators disposed between each successive pair of the field windings, respectively. A winding block, disposed in engagement with the winding module, is shaped to be shifted to a final position relative to the winding module when the rotor assembly rotates at about its rated speed to thereby compress the winding module. Either the winding block or the winding module can be displaced by centrifugal forces during rotation. In the final position, the winding block is locked by friction in a position to maintain compression in the winding module. The winding block serves to provide a pre-stress in the field windings to keep the field windings tight over the design range of spin speeds, thereby controlling winding position and reducing alternating radial movement.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: March 9, 2004
    Assignee: General Electric Company
    Inventors: Yu Wang, Christopher Anthony Kaminski, Robert John Nygard, James Pelligrino Alexander
  • Patent number: 6703744
    Abstract: A generator-motor for a vehicle includes a rotor having a rotor core and a plurality of permanent magnets and a stator having a stator core and an armature winding. The rotor core has a plurality of axially extending through-holes in a circumferential direction thereof to accommodate the permanent magnets and to increase circumferential magnetic reluctance thereof to form a plurality of auxiliary pole portions disposed between the through holes. The stator core has a plurality of teeth radially extending at equal intervals in a circumferential direction to face the rotor core. Each of auxiliary pole has a circumferential width that is 30%-55% of a circumferential width of each tooth. The minimum torque of the generator motor can be increased while torque ripple is reduced.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: March 9, 2004
    Assignee: Denso Corporation
    Inventors: Soichi Yoshinaga, Seiji Hayashi
  • Patent number: 6657330
    Abstract: In a turbo generator with a rotor with direct gas cooling, which rotor is provided with a rotor winding arranged around a central rotor body, said rotor winding being on the front sides covered by one each annular cap plate, and in which rotor cold cooling gas for cooling the rotor flows into ring gap segments between the cap plate and the rotor body, whereby the ring gap segments are bordered, when seen in circumferential direction, on the sides in each case by the section of an end spacer plate provided between the cap plate and the rotor winding, whereby this section is projecting into the ring gap, improved cooling is achieved in that separations of the cooling gas stream on flowing into the ring gap segments are avoided by designing the sections of the end spacer plates, whereby these sections adjoin the ring gap, in a manner that is advantageous with respect to the flow.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: December 2, 2003
    Assignee: Alstom (Switzerland) Ltd
    Inventors: Jürgen Baer, Josef Tommer
  • Patent number: 6630765
    Abstract: An electric machine having a rotor carrying a field coil has a fan and slip ring assembly. The slip ring assembly is axially remote from the fan portion, the slip ring assembly being electrically connected to the field coil. The point of connection between the slip ring assembly and the field coil is secured to the fan by a thermoplastic retaining member that is ultrasonically welded to the surface of the fan.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: October 7, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Jorge Esteban Silva, Randy G. Parker, Vern H. George
  • Patent number: 6495942
    Abstract: A non-metallic structural enclosure for a generator rotor replaces conventional containment components including rotor wedges, rotor teeth and retaining rings. The enclosure includes a non-metallic tube formed of a plurality of spaced rings or of a continuous tube including ventilation holes or slots. The simplified rotor assembly serves to restrain the winding against centrifugal forces with a more highly optimized use of space and materials. The arrangement allows more space for copper and ventilation, thereby benefiting both efficiency and the performance of the machine. The use of individual rings has the additional benefit of providing restraint against centrifugal forces without reducing the effectiveness of cross slots in the rotor body from correcting peripheral dissymmetries in rotor stiffness. The rings also provide openings for ventilation without introducing stress concentrations in the enclosure.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: December 17, 2002
    Assignee: General Electric Company
    Inventors: Christopher A. Kaminski, Richard J. Keck, Yu Wang
  • Patent number: 6492754
    Abstract: In the magnet retention channel arrangement for a high speed rotor described in the specification, a rotor has an array of radially projecting, angularly spaced pole pieces and a magnet retention channel arrangement inserted between each adjacent pair of pole pieces. Each magnet retention channel arrangement has ferromagnetic side walls and a nonmagnetic alloy cap and nonmagnetic alloy dovetail feet affixed to opposite edges of the ferromagnetic side walls by welding or by a hot isostatic pressed powder metallurgy technique. The channels contain permanent magnets and the ferromagnetic side walls couple the flux from the magnets to the pole pieces with substantially no magnetic discontinuities and the nonmagnetic alloy cap and nonmagnetic core avoids magnetic shorting.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: December 10, 2002
    Assignee: Electric Boat Corporation
    Inventors: John Weiglhofer, Stewart Peil