Windings And Core Structure Patents (Class 310/179)
  • Patent number: 11368066
    Abstract: An electric machine includes a stator core defining slots and a winding disposed in the core and having three phases. Each of the phases has at least two parallel paths including hairpins interconnected to form at least two continuous circuits between a terminal and a neutral. The hairpins of each path include: a first type of hairpins (first hairpins) each having first and second legs spaced apart by a span of five slots; a second type of hairpins (second hairpins) each having first and second legs spaced apart by a span of seven slots; and a third type of hairpins (first hairpins) each having first and second legs spaced apart by a span of five or seven slots.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: June 21, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Adeeb Ahmed, Jacob Krizan
  • Patent number: 11349363
    Abstract: A lamination for use in an integrated drive generator is formed from a plurality of plates having a body including a pair of opposed cylindrical surfaces. Non-cylindrical ditches are defined circumferentially intermediate the pair of cylindrical surfaces. A plurality of passages are formed in an outer periphery of the cylindrical surfaces including relatively large holes extending through a slot to the outer periphery. Grooves are formed intermediate the relatively large holes.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: May 31, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Derek R. Hochstetler, Ted A. Martin, Duane C. Johnson, Glenn C. Lemmers, Jr.
  • Patent number: 11316395
    Abstract: A method of manufacturing an armature coil includes steps of arranging a plurality of coil conductors of the armature coil between an end metal die and a back portion metal die on a lower metal die; pressing, with the upper metal die in a pressing direction, the plurality of the coil conductors arranged between the end metal die and the back portion metal die on the lower metal die; and removing coil conductors that become formed in a convex shape and a concave shape from the lower metal die. The upper metal die may be provided with an inclined portion on a lower metal die side of the upper metal die, and the upper metal die may be configured to be pressed such that a space is formed by the dies, the space having a width that gets gradually narrower.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: April 26, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Tamura, Shuichi Tamura, Akihiro Yamamura, Issei Doi, Hiroyuki Matsuo, Yasukazu Nishimura, Sachiko Kawasaki, Akihiko Mori
  • Patent number: 11289966
    Abstract: A prefabricated coil for placement on a tooth for a direct drive is orthocyclically wound from a wire of circular cross section. The coil includes two straight portions having an inner surface facing an interior of the coil and an outer surface opposite and parallel to the inner surface. A distance between the inner surface and the outer surface defines a thickness of the coil. Two coil overhangs connect the straight portions. A distance between the coil overhangs defines a height of the straight portions. The inner and outer surfaces of the straight portions have the height of the straight portions and a width of the straight portions. A sheet-like insulator covers the straight portions. The wire and the sheet-like insulator are bonded together such that the coil is self-supporting under the application of pressure and temperature. The sheet-like insulator has a joint region at the outer surface.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: March 29, 2022
    Assignee: ETEL S.A.
    Inventors: Johann Pourchet, Jeremy Anstett
  • Patent number: 11283317
    Abstract: A coil substrate for a motor includes a flexible substrate, and multiple coils formed on a surface of the flexible substrate. Each of the coils has a wiring having first wiring portions and second wiring portions extending from the first wirings respectively and is formed such that the first wiring portions extend parallel with respect to each other and that the second wiring portions extend not parallel to the first wirings, and the flexible substrate is formed to be formed around a magnet of a motor such that the first wiring portions form an angle that is substantially perpendicular to a rotation direction of the motor.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: March 22, 2022
    Assignee: IBIDEN CO., LTD.
    Inventors: Haruhiko Morita, Hitoshi Miwa, Shinobu Kato, Toshihiko Yokomaku, Hisashi Kato, Takahisa Hirasawa, Tetsuya Muraki, Takayuki Furuno
  • Patent number: 11283320
    Abstract: A stator includes a stator core, and a coil mounted on the stator core and having an insulating film, at least a part of the insulating film being coated with a protective paint, wherein a concave section is formed in a surface of the insulating film, and the protective paint is present in the concave section. The insulating film has hollow capsules formed therein.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: March 22, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Ryotaro Kaneko, Keisuke Azusawa, Tadao Nishiyama, Yasushi Noguchi
  • Patent number: 11277051
    Abstract: A motor includes a shaft, a bearing supporting the shaft, an armature disposed radially outward of the bearing, a bracket to which the bearing and the armature are fixed, a covered cylindrical rotor connected to the shaft, and a bus bar unit. The armature includes a core back, teeth extending radially outward from the core back, an insulator covering surfaces of the, and a defined by a wire wound from above the insulator around the teeth. The bus bar unit includes bus bars to which the coils are connected, a bus bar holder holding the bus bars, and a bus bar cover covering portion of the bus bars.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: March 15, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Satoshi Kajikawa, Yusuke Makino
  • Patent number: 11271448
    Abstract: A stator includes a stator core, an insulator attached to the stator core, and coil wires. The insulator includes base portions respectively surrounding outer peripheral surfaces of teeth and an outer wall portion located immediately above the core back and extending in a circumferential direction. Each of the coil wires includes coils into which each of the coil wires is wound around more than one of the teeth by concentrated winding, a connecting wire connecting the coils, and a pair of lead wires located at two ends of each of the coil wires and extending from the coils. The connecting wire of each of the coil wires includes at least one outside-passing portion extending along an outer surface of the outer wall portion on a radially outer side of the outer wall portion.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: March 8, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Hideaki Uchise, Takayuki Migita, Hiroshi Kitagaki, Tatsuya Ito, Akihiro Okita
  • Patent number: 11271447
    Abstract: This object is to secure a creepage insulation distance and improve insulation reliability. A stator core is formed as a housing, and is configured such that storage spaces for storing a plurality of segment coils are formed on an inner circumferential side of the housing in an axial direction of the housing and a plurality of the storage spaces is formed at intervals on the inner circumferential side of the housing. A plurality of coil support members is formed as annular members, and supports the plurality of segment coils. The coil support members each include a plurality of through-holes for inserting the segment coils, which is openings connected to the storage spaces, are separately disposed at both ends of the stator core in the axial direction, and each cover the inner circumferential side of the end portion of the stator core in the axial direction.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: March 8, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Tomohiro Fukuda, Shinji Yamazaki
  • Patent number: 11245299
    Abstract: Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: February 8, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yuji Kano, Takayuki Koizumi, Yasuyuki Saito, Seigo Misaki, Hisaya Shimizu
  • Patent number: 11228222
    Abstract: A rotor for an electrical machine includes a rotor core having a plurality of circumferentially spaced apart rotor poles. Windings are seated in gaps between circumferentially adjacent pairs of the rotor poles. A wedge secures the windings in each gap. The wedge includes a first member made of a first material and at least one second member made of a second material. The second material has a higher electrical conductivity than the first material. The wedge is configured to supply Q-axis damping. A pair of end plates is connected electrically to the at least one second member at opposing longitudinal ends thereof thereby completing a Q-axis winding circuit for each wedge.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: January 18, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Dhaval Patel, Andreas C. Koenig, Andrew R. Wilkinson
  • Patent number: 11217217
    Abstract: The present disclosure relates to devices, systems, and methods for controlling and/or augmenting acoustic sounds emitted from flight vehicles, such as unmanned aerial vehicles (UAVs). For example, while in flight, a UAV may emit a characteristic sound or tone (or a plurality of such tones), which may be a result of propeller and/or motor noise. To mitigate such noise from UAVs, disclosed embodiments may include acoustic resonators that may provide additional tones to complement the sounds or tones emitted from the UAV. Namely, the acoustic resonators may be shaped, adjusted, or otherwise controlled to emit additional tones that form pleasing intervals in combination with the characteristic tone(s) from the UAV.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: January 4, 2022
    Assignee: WING AVIATION LLC
    Inventor: Daniel Ratner
  • Patent number: 11201528
    Abstract: An induction motor may include a stator assembly and a rotor assembly that revolves or rotates around the state assembly. Additionally, a pole pitch of the induction motor may be less than two inches. The stator assembly may also optionally include a fractional slot winding.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: December 14, 2021
    Assignee: SUPERIOR ESSEX INC.
    Inventor: Christopher Paul Richardson
  • Patent number: 11183906
    Abstract: The invention relates to a stator (10) for an electric machine comprising a stator package (12); a stator winding, which comprises a plurality of rod-shaped conductors (16a, 16b), which are inserted through the stator package (12) in an axial direction (A); wherein at least one first conductor (16b) and an adjacent second conductor (16b) of the plurality of conductors are electrically connected to each other on an end face (20) of the stator package (12) by means of a bridge (34) formed by laser welding; wherein the bridge (34) formed by laser welding extends at an angle to the axial direction (A) between the conductor ends (18a, 18b) of the first conductor (16a) and the second conductor (16b).
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: November 23, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Jeihad Zeadan, Steffen Jacob, Tobias Hein
  • Patent number: 11177728
    Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: November 16, 2021
    Assignee: ResMed Motor Technologies Inc.
    Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
  • Patent number: 11171536
    Abstract: One embodiment relates to a cover assembly and a motor including the same, the cover assembly comprising: a cover body; and a plurality of grooves formed on the upper surface of the cover body so as to guide coils, wherein a hole is formed at one side of the groove so as to penetrate the cover body. Therefore, the motor guides the coils to the outside by using the hole formed in the cover assembly such that assemblability is improved.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: November 9, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Kyung Sang Park, Ju Hwan Ku, Jin Ho Kim, Tae Yoon Kim, Byeong Jong Yoo
  • Patent number: 11171531
    Abstract: An end winding arrangement of a stator of an electro-mechanical device is provided. The end winding arrangement includes at least two stator bars, wherein each stator bar has a linear member and a cell bend member. Each of the at least two stator bars is configured to have a unitary involute member extending from each cell bend member such that the involute member is configured as a single involute section without a lead bend section for reducing vibrations in the electro-mechanical device.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: November 9, 2021
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Mukesh Kumar Jaluthariya, Sonam Tewari, Narendra Singh, Neelima Tailor
  • Patent number: 11165310
    Abstract: A stator for an electrical rotating machine includes a laminated core having coil bars and a winding head board resting on an end side of the laminated core and having a main body including a first dielectric material. Conductor tracks are connected to the coil bars and integrated into the winding head board. The winding head board has a region with a second dielectric material and/or a region with a third dielectric material, with the second dielectric material having a higher thermal conductivity than the first dielectric material. The region with the second dielectric material is arranged between a conductor track and the laminated core such that heat is transmittable between conductor track and laminated core via the second dielectric material. The third dielectric material has a higher dielectric strength than the first dielectric material, with the region with the third dielectric material arranged between at least two conductor tracks.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: November 2, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventor: Benjamin Sewiolo
  • Patent number: 11159069
    Abstract: A rotor for an electrical machine includes a core including a plurality of rotor poles circumferentially spaced apart from one another about a hub. A winding is wound about the rotor poles. The winding passes longitudinally through a respective winding gap between each circumferentially adjacent pair of rotor poles. A cooling tube extends through at least one of the respective winding gaps.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: October 26, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Patent number: 11156209
    Abstract: A generator rotor for a wind power plant, wherein the generator rotor has at least one dividing plane for dividing the generator rotor into at least two segments. The dividing planes extend in the generator rotor along asymmetrical section lines of the generator rotor. A generator stator for a wind power plant, a generator of a wind power plant, and a wind power plant and a method for transporting a generator.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: October 26, 2021
    Assignee: Wobben Properties GmbH
    Inventors: Jan Carsten Ziems, Wojciech Giengiel, Mats Volles, Michael Freese, Wilko Gudewer, Jan-Phillip Köhler
  • Patent number: 11152828
    Abstract: A rotating electric machine includes a rotor, a stator, and a case, wherein each of the sub stator cores has a first insulated bobbin, a stator iron core, a second insulated bobbin, and a coil, and the coil is disposed in teeth parts of the first insulated bobbin, the stator iron core, and the second insulated bobbin, all of which are stacked in layers, and the first insulated bobbin has three ring holding parts which are formed in a core back part and extend to a circumferential direction, and the bus rings are separately inserted into the ring holding parts formed in the first insulated bobbin, and the first insulated bobbin, the stator iron core, and the second insulated bobbin each has a convex part formed at one side face of the core back part and a concave part formed at the other side face of the core back part.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: October 19, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshiki Kuwahara, Ryuji Kitamura, Yoshiaki Kitta, Fumitaka Totsuka, Koichi Ojima, Masaya Inoue
  • Patent number: 11101706
    Abstract: The invention relates to a rotor (3) for an electric rotating machine (1), in particular a synchronous machine (20), comprising a shaft (5) and at least one pole shoe (7). In order to keep overhead and costs low while achieving high reliability, according to the invention, a metal sheet (8) is placed between the shaft (5) and the pole shoe (7); said metal sheet (8) has a first contact area (12) that is in contact with a contact area (14) on the pole shoe (7), the metal sheet (8) and the pole shoe (7) being made of different materials.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 24, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Stefan Schmidt, Benjamin Gottfried Ulbrich, Martin Wieschalla
  • Patent number: 11095178
    Abstract: A motor includes a stator that has pole cores and a stator coil comprised of unit coils each being concentratedly wound around a corresponding one of the pole cores. Each of the unit coils is comprised of first and second sub-coils that are stacked in two layers in a stacking direction. Each of the first and second sub-coils is spirally wound so that coil sides of the sub-coil overlap each other in an overlapping direction perpendicular to the stacking direction. Each of the unit coils also has, at a single place, a connecting portion that connects the first and second sub-coils of the unit coil. The connecting portion is provided in a coil end of the unit coil. For each of the first and second sub-coils of the unit coil, the connecting portion is located at an innermost periphery of the sub-coil in the overlapping direction of the sub-coil.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: August 17, 2021
    Assignee: DENSO CORPORATION
    Inventor: Takashi Hirabayashi
  • Patent number: 11081946
    Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly 3002 may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: August 3, 2021
    Assignee: ResMed Motor Technologies Inc.
    Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
  • Patent number: 11075556
    Abstract: A coil assembly of a stator is configured in such a manner that an air core region of each magnet coil houses effective coil parts of different magnet coils. The outer shape of each magnet coil in a section perpendicular to a center axis of a rotor is a divided ring-like shape defined by dividing a circular ring into equal N parts. Two sides of the divided ring-like shape form an angle set to be 360°/N or less. Each magnet coil is made of a coil conductive wire including a conductive wire bundle as a bundle of multiple non-insulated conductive wires each being a non-insulated wire, and an insulating coating layer covering the periphery of the conductive wire bundle.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: July 27, 2021
    Inventor: Kesatoshi Takeuchi
  • Patent number: 11070159
    Abstract: A motor apparatus comprises a permanent magnet synchronous motor circuit having a plurality of lanes, each lane comprising a plurality of unbalanced phases. A current demand circuit which receives a torque demand signal having a value equal to the torque that is to be generated by the motor apparatus and generates a respective current demand signal for each lane indicative of the current to be applied to each phase of the lane to achieve the demanded torque. A first drive circuit and a second drive circuit each comprise a plurality of switches which selectively connect the phases of a respective one of the plurality of lanes to a supply such that PWM modulated currents flow in each of the phases that correspond to the demanded current. The current demand circuit is adapted to modify one or both of the current demand signals such that one or both lanes additionally generate a set of radial forces that are applied to the rotor of the motor that do not net to zero.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: July 20, 2021
    Inventor: Connel Brett Williams
  • Patent number: 11025117
    Abstract: An electric machine includes a stator core having a plurality of slots formed therein and a winding positioned in the slots of the stator core. The winding includes eight parallel paths distributed in layers of the stator core. The eight parallel paths include four pairs of adjacent paths. A first pair of adjacent paths crisscrosses a second pair of adjacent paths in the layers of the stator core. A third pair of adjacent paths crisscrosses a fourth pair of adjacent paths in the layers of the stator core. Neither the first pair nor the second pair of adjacent paths crisscrosses one or both of the third pair and the fourth pair of adjacent paths in the layers of the stator core.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: June 1, 2021
    Assignee: BorgWarner Inc.
    Inventor: Kirk Neet
  • Patent number: 11025119
    Abstract: A rotary electric machine includes a stator. A plurality of slots are formed in a stator core of the stator, and a coil and an insulating sheet layer are inserted into the slots. A first coil side surface and a second coil side surface of the coil inserted into the slots serve as adhesive regions, which are adhered to a slot inner circumferential surface via the insulating sheet layer. In addition, a first coil end surface and a second coil end surface of the coil inserted into the slots serve as non-adhesive regions, which are maintained in a non-contact manner with respect to the slot inner circumferential surface.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: June 1, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masashi Inoue, Tadashi Yamaguchi
  • Patent number: 11011958
    Abstract: An energy harvester article configured to associate with a ferromagnetic flywheel having gear teeth is provided and includes a magnet, a first pole piece, wherein the first pole piece includes a first pole piece first end and a first pole piece second end, a second pole piece, wherein the second pole piece includes a first portion and a second portion configured into an “L” shape, and wherein the second portion is arranged to be substantially parallel with the first pole piece and separated from the first pole piece by a distance L, and a coil, wherein the coil is configured to be wrapped around the first pole piece proximate the first pole piece second end.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: May 18, 2021
    Assignee: HARCO SEMCO, LLC
    Inventor: Robert A. Croce, Jr.
  • Patent number: 10998841
    Abstract: A power conversion device includes a first inverter connected to first ends of m (m is an integer equal to two or more) coil groups, a second inverter connected to second ends of the m coil groups, m?1 separation relay circuits connected between two adjacent coil groups of the m coil groups, m?1 first neutral point relay circuits provided between two adjacent coil groups of the first inverter side of each of the m?1 separation relay circuits, and m?1 second neutral point relay circuits provided between two adjacent coils of the second inverter side of each of the m?1 separation relay circuits.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: May 4, 2021
    Assignee: NIDEC CORPORATION
    Inventor: Hiromitsu Ohashi
  • Patent number: 10985625
    Abstract: A motor stator structure includes a core and plural hairpin wires. The core has slots, an insertion side, and an extension side. Each slot has an innermost layer, a second inner layer, a second outer layer and an outermost layer configured in a radial direction of the core. The hairpin leg protruding from the innermost layer extends for a first span distance, the hairpin leg protruding from the second inner layer extends for a second span distance, the hairpin leg protruding from the second outer layer extends for a third span distance, and the hairpin leg protruding from the outermost layer extends for a fourth span distance. The first span distance is different from the second span distance. The third span distance is different from the fourth span distance. The first and fourth span distances are substantially the same. The second and third span distances are substantially the same.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: April 20, 2021
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Hong-Cheng Sheu, Hsing-Cheng Lin, Chia-Hsing Chien, Yi-No Chen
  • Patent number: 10985638
    Abstract: A rotary electrical machine includes a stator, a field core, a rotor, and first and second air gaps. The stator includes an AC coil that generates a rotating magnetic field with an alternating current. The field core includes a field coil excited by a direct current. The rotor is disposed on an outer circumference of a starting apparatus and held rotatably about a rotational axis relative to the stator and the field coil. The first air gap is formed between the stator and the rotor, and allows a magnetic flux to flow therebetween. The second air gap is formed between the field core and the rotor, and allows a magnetic flux to flow therebetween. The second air gap defines an interval extending along a direction that intersects an axial direction of the rotational axis on one end surface of the rotor in the axial direction of the rotational axis.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: April 20, 2021
    Assignee: EXEDY CORPORATION
    Inventors: Hitoshi Katsura, Kohsuke Murata, Taichi Kitamura
  • Patent number: 10971964
    Abstract: A stator for a multiphase electric motor includes a plurality of laminates stacked to form a cylindrical stator core having a plurality of longitudinal slots; a plurality of electrical conductors grouped into a plurality of discrete electrical circuits, each of the plurality of the electrical conductors forming a plurality of coils in the slots spaced about the stator core, and each of the coils having a pair of leads; a plurality of bus cables, each of the plurality of bus cables having a mechanical connection to the pluralities of coils at ends of the slots; and wherein one of the leads from each of the coils is electrically connected to one of the plurality of bus cables.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: April 6, 2021
    Assignee: DAYTON-PHOENIX GROUP, INC.
    Inventors: Joseph A. Zahora, William R. Compton
  • Patent number: 10958117
    Abstract: A vehicle alternating-current power generator includes a stator formed by winding an armature winding on a stator core and a rotor arranged on the radial inside of the stator. The rotor includes a field core having a boss part and a plurality of claw-shaped magnetic pole parts, a field winding that is wound on the outer peripheral side of the boss part, and a permanent magnet that is arranged between the circumferentially adjacent claw-shaped magnetic pole parts. A d-axis magnetic circuit formed by magnetomotive force of the field winding and at least part of first and second magnet magnetic circuits formed by magnetic force of the permanent magnet are shared. When an electrical load is connected to the rotor, the relationship between a permeance Prt of the d-axis magnetic circuit and a permeance Pst of a q-axis magnetic circuit is set to satisfy Pst>Prt.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: March 23, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yuki Takahashi, Tomokazu Hisada
  • Patent number: 10916985
    Abstract: A method of forming a stator assembly, including providing a stator with a plurality of slots and a plurality of conductors configured to be inserted into the plurality of slots. The method includes obtaining a respective first shape for the plurality of conductors such that the plurality of conductors in the respective first shape forms concentric arcs sharing a common center. Obtaining the respective first shape includes forming a respective first portion, a respective second portion and a respective turn portion between the respective first portion and respective second portion. The method includes obtaining a respective second shape for the plurality of conductors, including: bending the respective first portion at a respective first bend to obtain a respective first leg and a respective first arm, and bending the respective second portion at a respective second bend to obtain a respective second leg and a respective second arm.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: February 9, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Scott Vaubel, John D. Campbell
  • Patent number: 10903711
    Abstract: A motor includes a rotor that has a shaft with a central axis extending in a vertical direction as a center, a stator disposed so as to face the rotor in a radial direction, a bearing that supports the shaft, a wire support member disposed above the stator, and a bearing holder disposed above the wire support member to hold the bearing. The stator includes a plurality of teeth, and a plurality of coils provided on the plurality of teeth. The wire support member includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires drawn out from the coil, a conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and the conducting member.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: January 26, 2021
    Assignee: Nidec Corporation
    Inventors: Kosuke Ogawa, Takashi Hattori, Shunsuke Murakami, Takao Atarashi, Hidehiro Haga, Yoshiaki Yamashita, Takahiro Kizu, Toshiya Okamoto
  • Patent number: 10892656
    Abstract: A stator, wherein the coil unit includes a coil end portion projecting from an axial end face of the stator core; the coil end portion includes a plurality of peak portions projecting axially outward and arranged in a circumferential direction, and a plurality of lead wire portions for supplying electric power to the coils; and each of the lead wire portions includes an extension portion extending at least in an axial direction, and a bent portion that is bent at least from the axial direction to a radial direction, at least a part of the bent portion being disposed on a stator core side with respect to the peak portions in the axial direction, in a space between the peak portions that are closest to the extension portion in the radial direction and that are adjacent in the circumferential direction.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: January 12, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Kiyotaka Koga
  • Patent number: 10855127
    Abstract: A stator for an electromagnetic machine having a plurality of electromagnets. Some or all of the electromagnets include a stack of laminations defining a tooth and a yoke segment, and an insulating bobbin surrounding a portion of the tooth of each lamination such that each lamination is held against adjacent laminations by the bobbin. The electromagnets also include electrically conductive windings surrounding a portion of the bobbin and a stator encapsulant fully encapsulating the bobbin and windings of the electromagnets.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: December 1, 2020
    Assignee: Zero E Technologoes, LLC
    Inventors: Thomas H. Hopkins, Felipe J. Castillo, Scott T. Graham, Keith W. Klontz
  • Patent number: 10848016
    Abstract: A direct-current electric motor (an electrically powered machine) is a 3-pole brush-equipped direct-current electric motor which is provided with an armature (a rotor), a field element (a stator), a shaft, a commutator, a brush, a bracket, and an end plate. Of these, the armature (an armature) is provided with a dust core configured with a compressed powder compact formed of magnetic powder, and a coil buried in the dust core. On the other hand, the field element is provided with a field magnet which generates a magnetic flux, and a yoke housing which supports the field magnet and also functions as a housing.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: November 24, 2020
    Inventors: Yukihiko Shiohara, Hidefumi Nakamura, Isamu Otsuka
  • Patent number: 10833543
    Abstract: A stator core and method of forming a stator assembly for an electric machine, including a cylindrical stator core, a set of posts extending radially inward from the stator core defining a set of slots between adjacent posts, and a set of windings formed by conductive wire wound in a fewer than all of the set the slots, defining a first subset of wound slots and a second subset of empty slots.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: November 10, 2020
    Assignee: GE Aviation Systems LLC
    Inventors: Michael Francis Michalski, Todd Eric Rook
  • Patent number: 10826364
    Abstract: Certain aspects relate to a continuous winding formed from a conductor of rectangular cross-section, the winding having a compound bend in the crowns connecting successive linear segments where the compound bend does not stress the conductor insulation to its failure point. The compound bend can be formed by applying force to the conductor in a first direction, thereby shaping a first bend in the conductor to form a u-shaped conductor having a crown and two linear segments, where the crown includes a v-shaped bend and two straight segments on either side of the v-shaped bend that each connect to one of the linear segments. A second bend can be formed by applying force to the conductor in a second direction perpendicular to the first direction. The shape of the second bend can depend on the desired radius of the winding when circularly wound and positioned in a stator.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: November 3, 2020
    Assignee: Faraday & Future Inc.
    Inventors: Erik Hatch, Dang Dinh Dang
  • Patent number: 10819182
    Abstract: A stator support 40 for an electric machine 10 includes a radial cut 70 in a support ring 46 that releases hoop stress in the support ring 46 and enables more radial displacement during heating and cold soak cycles in the stator 12, 16, thereby allowing a larger range of thermal conditions for the electric machine 10.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: October 27, 2020
    Assignee: GE Aviation Systems LLC
    Inventors: Michael Francis Michalski, Todd Eric Rook, Paul James Wirsch, Jr.
  • Patent number: 10819177
    Abstract: Various embodiments include a stator for an AC electric machine with a number of magnetic poles comprising: a central axis; and a stator winding with a plurality of conductor turns. The individual conductor turns are grouped into a total of n electrical strands. The individual conductor turns of a respective electrical strand define a first conductor branch and a second conductor branch. The first conductor branch and the second conductor branch are arranged helically around the central axis over at least half of their respective lengths. The helically arranged conductor branches each have a pitch greater than a product of an axial length of the helical conductor branches and the number of magnetic poles.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: October 27, 2020
    Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
    Inventors: Michael Frank, Jörn Grundmann, Wolfgang Nick, Mercedes Herranz Gracia
  • Patent number: 10804763
    Abstract: The present invention is a coreless coil characterized in that a plurality of ?-winding coils are formed by a first coil layer and a second coil layer that has a same shape and a same width as the first coil, each coil layer having a center opening, being laminated together. Each outer peripheral portion in a connection direction of the plurality of ?-winding coils has a connection stepped portion that is point-symmetric in relation to a center axis line of a Z-axis (the Z-axis being an axis that, in relation to an X-axis that is a center of both connected end portions of the ?-winding coil and passes through a lamination boundary line of the first coil layer and the second coil layer, is a center of both unconnected end portions of the ?-winding coil and passes through the lamination boundary surface such as to be orthogonal to the X-axis) of the respective center opening.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: October 13, 2020
    Assignee: NIDEC COPAL ELECTRONICS CORPORATION
    Inventors: Yusuke Saito, Kazuhiko Horie, Masatoshi Obayashi
  • Patent number: 10797541
    Abstract: Provided is a magnetic plate laminate comprising a laminate formed by stacking a plurality of thin strips, and fastening members provided in apertures in the laminate. Also provided is a method for manufacturing a magnetic laminate wherein the thin strips are amorphous thin strips and the magnetic body laminate is subjected to heat treatment, thereby forming nano-crystalline grains in the thin strips. Also provided is a motor equipped with a stator formed by stacking a plurality of the magnetic plate laminates, a securing plate for securing the stator, and a rotor arranged in an opening in the middle of the stator.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: October 6, 2020
    Assignee: PANASONIC CORPORATION
    Inventors: Yukio Nishikawa, Mituhiro Ikeda, Naoki Nojiri
  • Patent number: 10763730
    Abstract: An insulating resin coating method for coating with an insulating resin a weld of a stator having a plurality of the welds formed by welding ends of coil wires together, the method including the steps of: sandwiching and covering the weld of the coil wires by a pair of resin-molding molds; and injecting the resin into the resin-molding molds by a resin injector.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: September 1, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Kento Takase
  • Patent number: 10756588
    Abstract: A stator coil is formed by: combining a first division coil which is a coil with two or more turns and disposed in slots and in which a first terminal end portion and a second terminal end portion are formed, a second division coil which is a coil with a number of winding turns decreased from that of the first division coil by 0.5 turns and disposed in the slots and in which a first terminal end portion is formed, and a joint coil which is a coil with one turn and disposed in the slots and in which a first terminal end portion and a second terminal end portion are formed so as to be extended to the outside; and selectively joining the terminal end portions of these coils.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: August 25, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Kawamura, Naohiro Motoishi, Takatoshi Masuda
  • Patent number: 10749418
    Abstract: Methods and apparatuses for forming a woven coil assembly (100), the coil assembly having adjacent superimposed linear portions (L1-L6, AL7-AL12) extending parallel to each other in a first area (A1) of the coil assembly, and adjacent superimposed linear portions (L7-L12, AL13-AL18) extending parallel to each other in a second area (A2) of the coil assembly, wherein a plurality of head portions (T) connect the linear portions of the first area (A1) to the linear portions of the second area (A2).
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: August 18, 2020
    Assignee: ATOP S.P.A.
    Inventors: Massimo Ponzio, Rubino Corbinelli
  • Patent number: 10742102
    Abstract: A stator assembly has coils in a distributed winding configuration. A poly-phase switched reluctance motor assembly 3002 may include a stator assembly with multiple coils in a distributed winding configuration. The stator assembly may have a central bore into which a rotor assembly having multiple poles is received and configured to rotate. A method of controlling a switched reluctance motor may include at least three phases wherein during each conduction period a first phase is energized with negative direction current, a second phase is energized with positive current and there is at least one non-energized phase. During each commutation period either the first phase or second phase switches off to a non-energized state and one of the non-energized phases switches on to an energized state with the same direction current as the first or second phase that was switched off. The switched reluctance motor may include a distributed winding configuration.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: August 11, 2020
    Assignee: ResMed Motor Technologies Inc.
    Inventors: Aleksandr S. Nagorny, Siavash Sadeghi, David James Fleming, Michael Bruce Moir
  • Patent number: 10714069
    Abstract: The present disclosure relates to devices, systems, and methods for controlling and/or augmenting acoustic sounds emitted from flight vehicles, such as unmanned aerial vehicles (UAVs). For example, while in flight, a UAV may emit a characteristic sound or tone (or a plurality of such tones), which may be a result of propeller and/or motor noise. To mitigate such noise from UAVs, disclosed embodiments may include acoustic resonators that may provide additional tones to complement the sounds or tones emitted from the UAV. Namely, the acoustic resonators may be shaped, adjusted, or otherwise controlled to emit additional tones that form pleasing intervals in combination with the characteristic tone(s) from the UAV.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: July 14, 2020
    Assignee: Wing Aviation LLC
    Inventor: Daniel Ratner