Plural Windings Patents (Class 310/198)
  • Patent number: 10931220
    Abstract: Solar Motor Controller is an electronic device with DC power input terminals that may connect directly to solar PV panels, and output terminals that may connect directly to single or multiphase phase AC electric motors without requiring an energy storage subsystem. The Controller runs electric motors of many frequencies and is capable of interfacing to multiple voltages of solar PV panels with or without maximum power point tracking. The Controller may drive motors in water pumping, HVAC, refrigeration, compressors operation, blowers, machine tools, and many other applications; some controller applications may operate at motor speeds adjusted to conform to power available from attached solar panels.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: February 23, 2021
    Assignee: PREMIER ENERGY HOLDINGS, INC.
    Inventors: Yusuf Gurkaynak, Nikola Milivojevic, Gerhard Hautmann, John LoPorto
  • Patent number: 10826359
    Abstract: A two-pole brush-commutated DC electric motor with a stator and a rotor with a hollow-cylindrical ironless winding having n coil segments and a commutator having n commutator segments. Each coil segment being electrically connected to two adjacent commutator segments. An axis of gravity intersects the rotor axis perpendicularly and passes through the center of gravity of a coil segment or a center line of the coil segment that passes through the center of gravity and the rotor axis spanning a coil plane that defines the angular position of the associated coil segment. Two brush contact surfaces of the commutator segments are electrically connected to this coil segment have a distance bisector intersecting the rotor axis perpendicularly. The distance bisector and the rotor axis span a commutator plane which defines the angular position of the associated commutator segments.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: November 3, 2020
    Assignee: LAKEVIEW INNOVATION LTD.
    Inventor: Jens Schulze
  • Patent number: 10770945
    Abstract: According to one embodiment, there is provided a rotating electrical machine coil with a conductor and an insulation layer that is provided around the conductor to cover the conductor, the rotating electrical machine coil including a linear part of the coil and a coil end that is separable from and electrically connectable to the linear part of the coil.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: September 8, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Hidehito Matsuzaki, Tetsushi Okamoto, Fumio Sawa, Miki Nakamura, Atsushi Yamamoto, Yo Sasaki, Masafumi Fujita, Yoshihiro Taniyama, Takashi Harakawa, Norio Takahashi, Takaaki Hirose, Hiroaki Ishizuka
  • Patent number: 10756598
    Abstract: A method and apparatus for cooling a rotor assembly includes a rotor core having a rotatable shaft and defining at least one rotor post, a winding wound around the post, and at least one coolant conduit supported by the rotor core and in a thermally conductive relationship with a portion of the winding.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: August 25, 2020
    Assignee: GE Aviation Systems LLC
    Inventors: Mohammad Khaja Mohiddin Shaik, David Raju Yamarthi, Balamurugan Sridharan, Anirban Chatterjee, Prateek Jalan
  • Patent number: 10749399
    Abstract: Stators for an electrical machine which are fitted with a polyphase winding which is in the form of a plug-type winding and the winding sections of which run through slots of the stator and comprise a plurality of different conductor elements are already known. At least some of the said conductor elements have in each case two conductor limbs and in each case one connecting conductor which connects the two conductor limbs, wherein an even number of n conductor limbs is arranged one above the other in the radial direction with respect to a stator axis in each slot. Each conductor limb of one of the conductor elements is provided in its slot in a specific position with respect to a slot base of the slot. These polyphase windings comprise a comparatively large number of different conductor elements, in particular so-called special conductors which differ from the standard conductor elements. These special conductors increase the manufacturing costs.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: August 18, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Johannes Riedl, Alexander Kudlek, Patrick Fruehauf
  • Patent number: 10702835
    Abstract: A stator operable to generate a rotating magnetic field for an electrical rotating machine, the stator comprising at least one circuit board with electrically conductive portions formed thereon, the electrically conductive portions connected with a multiphase configuration, wherein a phase comprises: on a first face of the circuit board(s) electrically conductive portions arranged as a plurality of elements, an element comprising a radially extending radial portion having: connected at a proximal end thereof a proximal portion, the proximal portion extending therefrom with a directional component in a first angular direction; and connected at a distal end thereof a distal portion, the distal portion extending therefrom with a directional component in a second opposed angular direction, whereby proximal and distal are defined relative the centre of rotation of the magnetic field and said angular direction is defined about said centre of rotation; and on a second face of the circuit board(s) electrically conduc
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: July 7, 2020
    Assignee: Societe des Produits Nestle S.A.
    Inventors: Luan Vu Tran, Xuan Mai Tu, Alexa Perrin
  • Patent number: 10707713
    Abstract: An electric machine includes a stator core defining slots having radial layers that each include adjacent first and second pin positions. Pins are disposed in corresponding ones of the slots and are interconnected to form a winding path. The path occupies the first and second positions of each layer, and, for each of the corresponding slots, the pins are in a same layer.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: July 7, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Feng Liang, Franco Leonardi, Becky Sue Morris, Michael W. Degner
  • Patent number: 10673293
    Abstract: An electric machine including a rotor operably coupled with a stator having a plurality of stator windings. Each stator winding defines has a plurality of axially extending segments disposed within the stator slots and a plurality of end turn segments. At least one first axially extending segment defining a first cross sectional area and at least two second axially extending segments defining a smaller second cross sectional area are disposed in each of the stator slots. At least one of the plurality of end turn segments conductively couples a single first axially extending segment in a first one of the plurality of slots to at least two second axially extending segments in a second one of the plurality of slots. In some embodiments, the larger first axially extending segments are all disposed radially outwardly of the smaller second axially extending segments. The windings may be formed using hairpin conductors.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: June 2, 2020
    Assignee: BorgWarner Inc.
    Inventor: Seong Taek Lee
  • Patent number: 10622876
    Abstract: An electric drive apparatus includes a DC motor for driving the electric device; a DC power source for outputting constant-voltage DC power to the DC motor; and a chopper for converting the constant-voltage DC power into variable-voltage DC power according to a driving signal and providing the variable-voltage DC power to the DC motor. The DC motor has 2j armature winding branches, each of which consists of m windings, 2j×m commutator segments connected to the windings, and two brush sets respectively connected to two power line sets of the DC motor and in contact with the commutator segments.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: April 14, 2020
    Assignee: University of Shanghai for Science and Technology
    Inventors: Aijuan Jin, Shaolong Li
  • Patent number: 10615655
    Abstract: An electric machine with a stator operably coupled with a rotor. The stator includes a stator core defining a plurality of slots. Each of the slots defines a plurality of layer positions located at different radial distances from a rotational axis of the electric machine. At least three windings are associated with each of the phases of the machine. In a first slot, a first winding is disposed in a first layer position. A second winding is disposed in a second layer position. A third winding is disposed in a third layer position. The first winding includes a first outside lead wire extending from the first slot. The second winding includes a second outside lead wire extending from a second slot. The third winding includes a third outside lead wire extending from a third slot. Each of the outside lead wires are in the first layer position.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: April 7, 2020
    Assignee: BORGWARNER INC.
    Inventor: Kirk E. Neet
  • Patent number: 10505424
    Abstract: Each of phase windings includes parallel windings for each phase connected together in parallel, and the parallel windings include power-wire partial windings connected to a power supply side, neutral-line partial windings connected to a neutral point, and at least one of a set of 5-pitch and 7-pitch jumper wires, the power-wire partial windings, the neutral-wire partial windings, and the jumper wires being included in the plurality of partial windings forming the parallel windings. For two of the three phases, each of the 5-pitch jumper wires and a corresponding one of the 7-pitch jumper wires overlap each other, and for the remaining single phase, two of the 5-pitch jumper wires are spaced from each other in the circumferential direction, and each of the power-wire partial windings is adjacent to another power-wire partial winding for an identical phase or to a corresponding one of the neutral-line partial windings for a different phase.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: December 10, 2019
    Assignee: DENSO CORPORATION
    Inventors: Akito Tamura, Akira Fukushima
  • Patent number: 10411530
    Abstract: A rotating electric machine of one embodiment includes a stator provided with a stator core having windings of each pole of each phase lap wound thereto; and a rotor provided rotatably with respect to the stator. The stator core is provided with slots each having two or more parallelly connected windings of equal turns count inserted therein.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: September 10, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS CORPORATION
    Inventors: Takahiro Toi, Minoru Awazu, Nobutaka Akiura
  • Patent number: 10348147
    Abstract: In a rotating armature, the numbers of teeth straddled by each of plural coil portions are all the same as each other, three. In plural windings that form the plural coil portions, three individual coil portions that, out of the plural coil portions, are disposed at uniform intervals around the circumferential direction of the armature core and are connected together in series are formed in each of the windings. In each of the windings including the three individual coil portions, one segment out of the plural segments is connected to another segment that has the same phase as the one segment out of the plural segments.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kazushi Sugishima, Tetsuji Yoshikawa
  • Patent number: 10312761
    Abstract: In a rotating armature, the numbers of teeth straddled by each of plural coil portions are all the same as each other, three. In plural windings that form the plural coil portions, three individual coil portions that, out of the plural coil portions, are disposed at uniform intervals around the circumferential direction of the armature core and are connected together in series are formed in each of the windings. In each of the windings including the three individual coil portions, one segment out of the plural segments is connected to another segment that has the same phase as the one segment out of the plural segments.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 4, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kazushi Sugishima, Tetsuji Yoshikawa
  • Patent number: 10305339
    Abstract: A rotating electrical machine includes a stator having a stator core, coil groups, and a rotor. The coil groups include a first coil group located at an outer circumference side of the stator core and a second coil group located at an inner circumference side of the stator core. The first and second coil groups are formed into an annular shape by inserting unit coils into stator core slots so that the coils adjacent in a circumferential direction overlap alternately in a radial direction and so that an inside and an outside of the overlap alternate with each other. The first coil group is disposed to surround an outside of the second coil group. The first and second coil groups are disposed in a concentric manner. The unit coils constituting the second coil group have shorter circumferential lengths than the unit coils constituting the first coil group.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 28, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS CORPORATION
    Inventors: Minoru Awazu, Kyouichi Okada, Isamu Nitta, Hisaaki Shimozu
  • Patent number: 10250113
    Abstract: An electric motor includes: a rotor having a rotor yoke and a magnet; and a stator formed by stacking, in a rotation axis direction of the rotor, a plurality of electromagnetic steel sheet layers in each of which a plurality of electromagnetic steel sheets each having two teeth is annularly arranged. A core of a coil provided in the stator is formed of the teeth stacked in the rotation axis direction, there are two types of phases for arrangement of a plurality of electromagnetic steel sheets in one electromagnetic steel sheet layer, and the stator includes the electromagnetic steel sheet layers having the two types of phases.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: April 2, 2019
    Assignee: NSK LTD.
    Inventors: Kazunori Koizumi, Hayao Watanabe
  • Patent number: 10250091
    Abstract: The invention relates to an electric machine, which comprises a stator (1) and a rotor (2) that can be moved in relation to the stator. The stator (1) has a first multi-strand winding (I) and at least a second multi-strand winding (II), which each comprise two sub-windings (A1, A2) mechanically shifted in relation to each other. In a slot (3) of the stator, a number of windings (Nw1) of the first sub-winding (A1) of a multi-strand winding is different from a number (Nw2) of windings of the second sub-winding (A2) of said multi-strand winding. The stator (1) has a number of slots (3) that is twice the number of slots minimally required for a given pole pair number p of the rotor (2) for one of the multi-strand windings.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: April 2, 2019
    Assignee: FEAAM GMBH
    Inventor: Gurakuq Dajaku
  • Patent number: 10228298
    Abstract: A torque sensor coil includes a non-magnetic bobbin that includes first inclined grooves inclined at a predetermined angle relative to an axial direction and second inclined grooves inclined at the predetermined angle relative to the axial direction in a direction opposite to the first inclined grooves, a first detection coil formed by winding an insulated wire around the bobbin along the first inclined grooves, and a second detection coil formed by winding an insulated wire around the bobbin along the second inclined grooves. The bobbin is divided into plural regions along the circumferential direction, side walls of the first and second inclined grooves in each region are all parallel to a mold draw direction set to be different for each region or are inclined with respect to the parallel direction in such a manner that the first and second inclined grooves are widened toward the outside in a radial direction.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: March 12, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Hiroki Shimizu, Teruyuki Nakamura
  • Patent number: 10193406
    Abstract: Rotating machinery includes a rotor of 2n poles, 84n slots, and three-phase stator windings, where n is an integer equal to or greater than 1. A top coil and a bottom coil accommodated at the diametrically inner and outer sides of the slot are connected to each other to form the stator winding. The stator windings have 2n phase belts per one phase, the phase belt including two parallel windings. In at least one of the phase belts, the one coils are disposed in the order of the second, first, first, second, first, second, first, second, second, first, second, first, second, and first parallel windings; the other coils connected to the one coils are disposed in the order of the first, second, second, first, second, first, second, first, second, first, first, second, first, and second parallel windings.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: January 29, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kiyoteru Tanaka, Kazuhiko Takahashi, Toru Muto
  • Patent number: 10186923
    Abstract: According to one embodiment, there is provided a 3-phase even-numbered-pole 2-layered armature winding housed in 45 slots per pole provided in a laminated iron core. The coil pieces corresponding to first, second, and third parallel circuits are placed in the first phase belt, and the coil pieces corresponding to fourth, fifth, and sixth parallel circuits are placed in the second phase belt. The upper coil pieces and the lower coil pieces of each parallel circuit are mutually placed in identical-numbered positions from a pole center.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: January 22, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Ueda, Masafumi Fujita, Tadashi Tokumasu, Kazuma Tsujikawa
  • Patent number: 10153674
    Abstract: An armature for an electric machine according to the present invention includes: an armature core in which a plurality of slots are arranged in a circumferential direction; and an armature winding that is mounted to the armature core, and includes a plurality of two-lane winding bodies that are each produced by stacking and winding two jointless continuous conductor wires that are coated with insulation such that the two conductor wires are stacked in a radial direction of the armature core, the two-lane winding bodies being arranged at a pitch of one slot in a circumferential direction so as to be mounted into a third slot, a first slot, and a second slot that line up consecutively in the circumferential direction at an angular spacing of six slots.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: December 11, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Atsushi Sakaue, Akira Hashimoto, Hiroyuki Akita, Masaya Inoue
  • Patent number: 10148146
    Abstract: A brush-commutated direct-current motor comprises a stator which includes a plurality of exciter poles, a rotor rotatable relative to the stator about an axis of rotation, a plurality of pole teeth arranged on the rotor, and grooves arranged between the pole teeth, wherein the pole teeth are separated from each other by the grooves along a circumferential direction around the axis of rotation. On the pole teeth coil windings are arranged. A commutator is arranged on the rotor and includes a plurality of lamellae, wherein each coil winding is connected with one of the lamellae via a first connecting arm and is connected with another one of the lamellae via a second connecting arm.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: December 4, 2018
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wuerzburg
    Inventors: Akram Ben Helal, Walter Roeder, Norbert Heim, Johannes Bartoschek
  • Patent number: 10128713
    Abstract: According to one embodiment, there is provided a 3-phase even-numbered-pole 2-layered armature winding housed in 45 slots per pole provided in a laminated iron core. In each coil piece group of each phase belt, the coil pieces of the second and fifth parallel circuits are placed in the second positions from the pole center among three positions of coil pieces in corresponding coil piece group. In six or four groups out of ten coil piece groups of each phase belt, coil pieces of the first or fourth parallel circuit are placed in the first position from the pole center. In first and second coil piece groups, coil pieces of the first or fourth parallel circuit are placed in different-numbered positions from the pole center.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: November 13, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masafumi Fujita, Takashi Ueda, Tadashi Tokumasu, Kazuma Tsujikawa, Masanori Arata
  • Patent number: 10090722
    Abstract: Rotating machinery of the invention includes a 2n-pole rotor, 72n slots, and three-phase armature windings (n?1). Each of the slots houses a top coil on an inner radius side of the slots and a bottom coil on an outer radius side thereof. Each of the armature windings is formed by connecting the top and bottom coils and has 2n phase belts per phase. Each of the phase belts includes a first parallel winding and a second parallel winding. The top and bottom coils are formed by arranging the first and second parallel windings in a predefined order when a circumferential mean position of all top coils and bottom coils in each of the phase belts is defined as a phase belt center and an arrangement of the first and second parallel windings in at least one phase belt is viewed in an order of proximity to the phase belt center.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: October 2, 2018
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Jun Yoshida, Kazuhiko Takahashi, Norihito Yanagita, Shigeki Tounosu
  • Patent number: 10033237
    Abstract: A rotating electrical machine includes a rotor core, a rotor shaft, a coil, a bind, a lead-out wire of which one end is connected to the coil and the other end is connected to a neutral ring. A filling is filled between the coil and the neutral ring. The neutral ring is formed with a plurality of members that are connected with one another to have flexibility.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: July 24, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Yasushi Hayasaka, Masanori Matsumoto, Yasunori Otsuki, Tetsuo Fujigaki, Yoshihiro Yasui, Motonobu Iizuka, Masaaki Endou, Atsushi Fukunaga, Takeshi Nakayama
  • Patent number: 9983075
    Abstract: A torque sensor includes a bobbin that includes a plurality of first inclined guide paths inclined at a predetermined angle relative to an axial direction and a second inclined guide paths inclined at a predetermined angle relative to the axial direction in a direction opposite, first and fourth detection coils formed by winding insulated wires around the bobbin along the first inclined guide paths, and second and third detection coils formed by winding insulated wires around the bobbin along the second inclined guide paths. The first to fourth detection coils each form a plurality of layers laminated on the outer surface of the bobbin. The layers of the second and third detection coils are interposed between the plurality of layers of the first and fourth detection coils. The layers of the first and fourth detection coils are interposed between the plurality of layers of the second and third detection coil.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: May 29, 2018
    Assignee: HITACHI METALS, LTD
    Inventor: Teruyuki Nakamura
  • Patent number: 9979261
    Abstract: In a brush holder accommodating part 26d of a gear housing 26, paired flat surface parts 26c and paired curved parts 26b are alternately disposed so as to be formed into an elliptical shape, one of the paired flat surface parts is formed with first heat sinks 26i, and two brushes 20 and 20 mounted on a brush holder unit 19 accommodated in the brush holder accommodating part 26d are disposed near the first heat sinks 26i.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: May 22, 2018
    Assignee: Mitsuba Corporation
    Inventors: Hiroto Tanaka, Takeshi Kanai, Masaaki Kimura, Koji Tsuchiya
  • Patent number: 9935534
    Abstract: An electric machine includes an outer stator having a plurality of windings, an inner stator having a plurality of permanent magnets and arranged within the outer stator in concentric relationship to the outer stator, and a rotor arranged between the outer stator and the inner stator in concentric relationship to the outer and inner stators and movable relative to the outer and inner stators. The rotor includes a mounting element which is made from a non-magnetic material and has a plurality of recesses, with a magnetically soft segment being arranged in each of the recesses. A first cooling device cools the permanent magnets of the inner stator.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 3, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Rolf Vollmer
  • Patent number: 9917485
    Abstract: An electric machine has grooves and windings, divided into strands, of electrical conductors. At least one strand has a number s of coils connected in series and arranged in the grooves. Each coil has sub-conductors connected in parallel and arranged in bundles. Each bundle is arranged in a groove at a bundle position relative to a deepest possible bundle position in the groove. The positions of all bundles in all coils define a number b of possible bundle positions of the strand. The bundles are interchanged between the coils such that each bundle is arranged in the grooves at least n times and at most n? times at each possible bundle position, wherein n is the integer quotient in regard to the quotient of the number s and the number b, wherein n?=n if s is divisible by b and n?=n+1 if s is not divisible by b.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: March 13, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Matthias Centner, Patrick Gels, Rüdiger Schäfer, Jörg Waschek
  • Patent number: 9882518
    Abstract: An auxiliary winding for use in an engine-driven generator system is disclosed. The auxiliary winding is separate from but resides with the main winding in the stator slots of an alternator in the generator system. The auxiliary winding is configured to utilize the fundamental component of the flux in the airgap of the alternator along with selected spatial harmonic components to provide power to an automatic voltage regulator during all operating conditions.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 30, 2018
    Assignee: Generac Power Systems, Inc.
    Inventor: Graham W. McLean
  • Patent number: 9825498
    Abstract: An armature including a core that includes plural teeth extending in a radial shape, and that has a slot formed between each of the plural teeth; a plurality of first winding coil sections formed by winding coil wire plural times spanning different respective sets of least two of the teeth, while shifting by one slot each time toward one side in the circumferential direction of the core; and a plurality of second winding coil sections formed by winding coil wire plural times spanning different respective sets of least two of the teeth, while shifting by one slot each time toward the other side in the circumferential direction of the core.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: November 21, 2017
    Assignee: ASMO Co., Ltd.
    Inventors: Koji Odani, Akihiko Seki
  • Patent number: 9742306
    Abstract: A converter device includes: a converter circuit unit converting alternating-current voltages from a ? connection and a Y connection of a twelve-phase rectification transformer, into a direct-current voltage; a current detection unit detecting a current of a direct-current bus connected to the converter circuit unit; an open-phase detection unit connected to a side of the ? or Y connection to detect whether open phase is caused in the connection connected thereto; and an output unit outputting, when detected that there is open phase caused in the ? or Y connection based on a detection signal of the open-phase detection unit and a current value of the direct-current bus detected by the current detection unit, an indication that open phase is caused in the ? or Y connection. When open phase is caused, it is possible to output an indication of whether the open phase is caused on the ? or Y connection side.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: August 22, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masahiro Otsubo
  • Patent number: 9725258
    Abstract: An image forming device includes: a conveyance unit; an image forming section; a plurality of storage units; and a sheet feeding roller, wherein provided are: one drive source; a first drive transmission system including a first one-way clutch; a second drive transmission system including: a second one-way clutch; and a first transmission interrupting unit; a third drive transmission system including: a third one-way clutch; and a second transmission interrupting unit; and a control unit, and the control unit is configured to: rotationally drive the drive source in the first direction at the time of the sending operation by the first sheet feeding roller; rotationally drive the drive source in the second direction at the time of the sending operation by the second sheet feeding roller; and rotationally drive the drive source in the second direction at the time of the sending operation by the third sheet feeding roller.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 8, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Katuhisa Ichikawa, Yoshiki Matsui
  • Patent number: 9577485
    Abstract: According to one embodiment, there is provided a 3-phase 2-pole 2-layer armature winding, housed in 72 slots provided in a laminated iron core, a winding of each phase including six parallel circuits separated into two phase belts. Upper coil pieces of first and fourth parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, and lower coil pieces of the first and fourth parallel circuits are placed at 1st, 6th, 9th, and 10th positions, upper and lower coil pieces of second and fifth parallel circuits are placed at 2nd, 5th, 8th, and 11th positions, and upper coil pieces of third and six parallel circuits are placed at 1st, 6th, 9th, and 10th positions, and lower coil pieces of the third and six parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, from the center of a pole.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: February 21, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi Tokumasu, Masafumi Fujita, Takashi Ueda, Mikio Kakiuchi
  • Patent number: 9525324
    Abstract: An axial flux electrical machine comprises a substantially sealed housing (10) defining a fluid flow path (20), a heat exchanger (22) for transferring heat energy from a fluid flowing in the fluid flow path to another fluid, a stator (16) located within the housing (10), a rotatable shaft (12), a rotor (18) located within the housing (10) on the shaft (12) adjacent the stator (16) and rotatable with respect to the stator (16), wherein the fluid flow path extends between the stator (16) and the rotor (18).
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: December 20, 2016
    Inventor: Michael Lamperth
  • Patent number: 9509184
    Abstract: A magnet element (37) and a method of its manufacture for assembly into a rotor (38), the magnet element (37) having magnetic domains aligned anisotropically to form a domain alignment pattern (42), wherein the magnetic domain alignment pattern (42) in the magnet element (37) has an orientation that varies substantially continuously across at least part of the magnet element (37) between its lateral edges from at least partially radial to at least partially tangential.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: November 29, 2016
    Assignee: FISHER & PAYKEL APPLIANCES LIMITED
    Inventors: Gerald David Duncan, Christian John Wade Gianni, John Julian Aubrey Williams, Kerrin Edmund Burnnand, Gregory Paul Hill
  • Patent number: 9461512
    Abstract: The present invention relates to an electric machine, in particular a brushless permanent magnet motor, provided with a rotor and a stator which has a plurality of teeth with winding phases provided thereon, wherein each winding phase has at least four windings, wherein, of the at least four windings of a winding phase, in each case two windings are connected in series with one another, and wherein these windings which are connected in series are connected in parallel. The present invention also relates to a steering device.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: October 4, 2016
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg
    Inventors: Grzegorz Ombach, Jacek Junak
  • Patent number: 9425663
    Abstract: A distributed winding arrangement for an electric motor is provided that reduces brush arcing while reducing the size of the commutator. The electric motor is comprised generally of an armature having a plurality of spaced apart posts defining a plurality of spaced apart winding slots; a stator disposed coaxially with the armature; and a commutator having a plurality of commutator bars, where the number of commutator bars is an integer greater than the number of winding slots but less than twice the number of winding slots provided by the armature.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: August 23, 2016
    Assignee: BLACK & DECKER INC.
    Inventors: Wei Chen, Jin Fujun, Steven Swaddle, Timothy W. French, Jr.
  • Patent number: 9419488
    Abstract: According to one embodiment, there is provided a 3-phase 2-pole 2-layer armature winding, housed in 72 slots provided in a laminated iron core, a winding of each phase including six parallel circuits separated into two phase belts. Upper coil pieces of first and fourth parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, and lower coil pieces of the first and fourth parallel circuits are placed at 1st, 6th, 9th, and 10th positions, upper and lower coil pieces of second and fifth parallel circuits are placed at 2nd, 5th, 8th, and 11th positions, and upper coil pieces of third and six parallel circuits are placed at 1st, 6th, 9th, and 10th positions, and lower coil pieces of the third and six parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, from the center of a pole.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: August 16, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi Tokumasu, Masafumi Fujita, Takashi Ueda, Mikio Kakiuchi
  • Patent number: 9379593
    Abstract: A vehicle drive device that has a stator and a rotor disposed on the inside of the vehicle wheel and drives the wheel, wherein the whole stator can be intensively cooled without causing an increase in production costs. The vehicle drive device comprises: the stator that has a stator core (20) and a hollow stator coil (30), is arranged on the inside of the rotating vehicle wheel (10), and electrically generates magnetic force; the rotor that has permanent magnets (11) connected to the wheel (10), and applies rotational force to the wheel (10) using the magnetic force of the stator; a cooling medium that flows through the hollow section of the stator coil (20); and a first radiator unit (50) that releases heat from the cooling medium.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: June 28, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kenji Sugihara, Satoru Itani
  • Patent number: 9362793
    Abstract: A stator for an electric rotary machine includes: a stator core having a plurality of slots; and segmented coils of a plurality of phases (for example, coils 50 in the embodiment), wherein: the segmented coils of a plurality of phases have pluralities of coil bars which are inserted individually in the plurality of slots in the stator core and which extend substantially in a straight line and pluralities of connection coils which connect together the coil bars of the same phase to thereby make up extending portions; the connection coils each comprise an inner connection coil and an outer connection coil which are disposed in different axial positions; and the inner connection coil faces an outer connection coil of a different phase in an axial direction and the outer connection coil faces the inner connection coil of a different phase in the axial direction.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: June 7, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tomotaka Iki, Takeki Kishi
  • Patent number: 9362809
    Abstract: One embodiment provides a stator for an electric rotary machine, the stator including: a stator core having plural slots; segmented coils of plural phases; and a pair of base plates provided at both ends of the stator core, wherein the segmented coils have plural substantially-straight coil bars which are respectively inserted in the slots in the stator core and plural connection coils which are disposed on the base plates so as to connect together the coil bars of the same phase, and wherein the stator core and the coil bars make up a stator core assembly and the base plates and the connection coils make up base plate assemblies, so that the stator is made up of the stator core assembly and the base plate assemblies.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: June 7, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takeki Kishi, Tomotaka Iki
  • Patent number: 9318990
    Abstract: Redundant winding connections for multiphase electric machines are disclosed. According to one aspect, a multiphase machine having redundant winding connections includes: a first set of N coils operating as a first winding group, wherein each coil in the first winding group operates at a different phase from the other coils in the first winding group and wherein N is an integer greater than three; a second set of N coils separate from the first set and operating as a second winding group, wherein each coil in the second winding group operates at a different phase from the other coils in the second winding group and wherein the failure of one of the coils in the first winding group does not affect the function of the second winding group.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: April 19, 2016
    Assignee: ABB RESEARCH LTD.
    Inventor: Nicolas W. Frank
  • Patent number: 9293952
    Abstract: A wound field flux switching machine with a sinusoidal back electromotive force features a rotor with teeth and a stator with groups of teeth wherein each group has a field winding and each tooth has a phase winding.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: March 22, 2016
    Assignee: Foster-Miller, Inc.
    Inventor: David C. Meeker
  • Patent number: 9225215
    Abstract: A rotating electric machine includes a hollow cylindrical stator core and a stator coil mounted on the stator core. The stator core has a plurality of slots that are arranged in a circumferential direction of the stator core. The stator coil is formed of a plurality of substantially U-shaped electric conductor segments to include at least one ?-Y connection. The ?-Y connection includes a ?-connected first three-phase winding and a Y-connected second three-phase winding. The first three-phase winding includes three phase windings that are ?-connected to define three terminals of the first three-phase winding therebetween. The second three-phase winding includes three phase windings that are respectively connected to the three terminals of the first three-phase winding. Further, the number of turns of the first three-phase winding and the number of turns of the second three-phase winding are respectively set to two different odd numbers.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: December 29, 2015
    Assignee: DENSO CORPORATION
    Inventor: Nobuhiro Asano
  • Patent number: 9178395
    Abstract: A traction motor for an electric vehicle, comprises a stator and a rotor rotatably mounted to the stator. The rotor comprises a rotor core and magnets fixed to the rotor core. The rotor core has 2P rotor poles formed by the magnets, P being an integer greater than one. The stator comprises a stator core having S teeth and field windings wound on the teeth, S being equal to 3·m·P where m is the number of phases. Field windings of each phase comprises P winding units. Each the winding unit comprises a first coil and a second coil connected in series. The first coils have a larger coil pitch and a greater number of turns compared to the second coils.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: November 3, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Rui Feng Qin, Chang Jin Zhou, Ling Yang
  • Patent number: 9172280
    Abstract: A conductor for a coil of a rotating electrical machine that includes a conductor wire bundle formed by gathering a plurality of conductor wires and a flexible insulating covering material that covers a periphery of the conductor wire bundle. The conductor has an intra-covering gap formed inward of the insulating covering material in a radial direction so that the conductor wires can move relative to each other in the intra-covering gap, and a cross-sectional shape of the insulating covering material along a perpendicular plane that is perpendicular to an extending direction in which the conductor wire bundle extends can be deformed.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: October 27, 2015
    Assignee: AISIN AW CO., LTD.
    Inventor: Kiyotaka Koga
  • Patent number: 9106168
    Abstract: A method for re-powering a star-connected stator having a plurality of parallel stator slots, wherein a plurality of stator winding bars having external winding connections are disposed in stator slots includes bridging the external winding connections so as to connect the stator winding bars in series and to form a polygonal stator capable of producing a polyphase alternating current.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: August 11, 2015
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventor: Alain Lacaze
  • Patent number: 9033117
    Abstract: A motor for actuating brake members of an electric parking (EPB) system, includes a stator and a rotor rotatably mounted to the stator. The rotor has a shaft, a commutator, a rotor core fixed to the shaft, and rotor windings wound about teeth of the rotor core and electrically connected to segments of the commutator. The rotor windings have a plurality of winding units and each of the winding units have at least two coils. The coils of each winding unit are wound about the same teeth and are connected to a same pair of segments.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: May 19, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Hang Cheong Ma, Hing Shing Chung, Hai Ning Liao
  • Patent number: 9035526
    Abstract: In one possible implementation, a method for forming a motor winding is provided which includes compressing a Litz wire to form a compacted Litz wire and forming the winding with the compacted Litz wire. In one possible embodiment, a motor winding is provided that has a high density multi-conductor wire bundle comprises of compacted Litz wire.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: May 19, 2015
    Assignee: AeroVironment, Inc.
    Inventors: Wally Ewald Rippel, Zaher Abdallah Daboussi, Bradford M. Hori, Scott Garret Berman, Bart Dean Hibbs, Sr.