Bar Windings Patents (Class 310/201)
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Patent number: 12231013Abstract: A winding for an active portion of a rotary electric machine has at least one phase system including a plurality of phases each including a first energizing pin and a second energizing pin each forming a phase input or output. Each energizing pin includes an energizing end that extends out of the slot and each energizing end that forms a phase output being electrically connected to an energizing end that forms a phase input of a different phase, in order to achieve a delta configuration. The winding includes a first set including at least one energizing end forming a phase input and at least one other energizing end forming a phase output, and a second set including at least one energizing end forming a phase input and at least one other energizing end forming a phase output.Type: GrantFiled: June 23, 2020Date of Patent: February 18, 2025Assignee: VALEO EQUIPEMENTS ELECTRIQUES MOTEURInventors: Maxime Grospeaud, Alexandre Schmitt, Clement Bernard, Jean-Francois Gautru, Wojciech Mandok, Stephane De Clercq, Cyril Picard
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Patent number: 12231012Abstract: A stator (10) for an axial flux electrical machine (100), an axial flux machine (100) that includes the stator (10), and a method (500) of manufacturing a stator (10) are provided. The conductive coils (12) which form the stator (10) provide a structure which includes spaces (131a, 131b, 131c, 132a, 132b) for flux guides (30), which improves ease of stator manufacture. It also allows for a high number of slots per pole per phase, which provides a more sinusoidal back-EMF.Type: GrantFiled: January 29, 2020Date of Patent: February 18, 2025Assignee: Exedy Clutch Europe LimitedInventor: Christopher Roger Lines
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Patent number: 12231011Abstract: Stator (2) for a rotary electric machine (1), comprising a stator mass (25) comprising slots (21), electrical conductors (22) accommodated in the slots (21) forming a multiphase winding having at least a first phase (a) and a second phase (b), an input electrical conductor (A) of the first phase (a) being located in a first slot (slot number 1), one or more electrical conductors of the second phase (b) being located in a second slot (slot number 2), the second slot immediately following the first slot when going circumferentially around the axis of rotation of the machine, in the direction of flow of the electric current around the axis of rotation of the machine.Type: GrantFiled: July 21, 2020Date of Patent: February 18, 2025Assignee: NIDEC PSA EMOTORSInventor: Cyril Moya
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Patent number: 12224636Abstract: The present invention provides a stator of a disc-type motor and a winding method thereof. A circle of coil units (20) filled into coil slots (1) are arranged on a disc-shaped stator disc (12); jumper wire slots (10), fly wire slots (3) and jumper wire joint holes (7) are formed in the radial outer sides of the coil slots (1); and the coils are wound, overlapped and filled into the coil slots in a disc shape and are connected with one another in series by connecting wires embedded into the stator disc (12) in the same current direction.Type: GrantFiled: November 28, 2022Date of Patent: February 11, 2025Inventor: Renwei Yu
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Patent number: 12218556Abstract: A rotating electric machine includes: a field system including a magnet section having a plurality of magnetic poles whose polarities alternate in a circumferential direction; and an armature arranged to face the field system and including a multi-phase armature coil. Either of the field system and the armature is configured as a rotor. The field system also includes a soft-magnetic core having at least one magnet-receiving hole in which the magnet section is received and held. The armature coil has electrical conductor sections arranged at positions facing the field system and at predetermined intervals in the circumferential direction. In the armature, inter-conductor members are provided between the electrical conductor sections in the circumferential direction. The inter-conductor members in each part of the armature corresponding to one magnetic pole are magnetically saturated by magnetic flux from one magnetic pole of the magnet section when the electrical conductor sections are not energized.Type: GrantFiled: February 28, 2022Date of Patent: February 4, 2025Assignee: DENSO CORPORATIONInventor: Yuki Takahashi
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Patent number: 12212199Abstract: A stator for an electric machine having a plurality of pins, which are arranged on concentric circles at different distances from a stator center point in slots in the stator, and each concentric circle forms a layer, where four pins in different layers are connected to one another in series and form a winding. A first pin of the winding is located in a first slot in the 4n-3 layer, wherein n is a natural number, a second pin of the winding is located in a second slot in the 4n-2 layer, wherein the second slot is at a first radial distance from the first slot in a first circumferential direction of the stator, a third pin of the winding is located in the first slot in the 4n layer, and a fourth pin of the winding is located in the second slot in the 4n-3 layer.Type: GrantFiled: September 8, 2020Date of Patent: January 28, 2025Assignee: Valeo Siemens eAutomotive Germany GmbHInventors: Stephane De-Clercq, Wojciech Mandok, Christian Finger-Albert, Boris Dotz
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Patent number: 12212200Abstract: In a motor, a stator includes: a stator core having slots arranged in a circumferential direction; and conductor connection bodies with conductors connected in series and inserted into the slots. A conductor connection body includes: a first portion wave-wound toward one side in the circumferential direction from a first end to a second end; a second portion wave-wound toward the one side in the circumferential direction from a third end to a fourth end; and a folded portion connecting the first and second portions. The first and third ends protrude in an axial direction from different slots in the circumferential direction, and the second and fourth ends protrude in the axial direction from different slots in the circumferential direction. The conductors include a folded conductor that forms a folded portion connecting the second end of the first portion and the fourth end of the second portion.Type: GrantFiled: May 23, 2022Date of Patent: January 28, 2025Assignee: NIDEC CORPORATIONInventors: Yuki Ishikawa, Hiroyuki Abe, Hironobu Kumagai
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Patent number: 12191729Abstract: A stator (1) for an electric machine (101), wherein the stator (1) has N?3 phases (U, V, W), P?2 pole pairs, and q?1 holes, the stator (1) comprises a stator core (3) having at least 2NPq slots (4) and a number of 2NPqL shaped conductors (5) arranged in an even number of L?4 layers (6a-h) radially layered in the slots (4), the shaped conductors (5) form 2q paths (7a-d) per phase and are arranged in 2P winding zones (8), which each extend radially over L layers (6a-h) and in the circumferential direction over at least q directly adjacent slots (4), the shaped conductors (5) of each path are connected in a series circuit, which is provided by connectors (9a-e, 10a-f, 11a-g) arranged at both end faces (2a, 2b) of the stator core, each path comprises L/2 groups (12a-d) of shaped conductors (5) successively connected in series, each group (12a-d) is formed by at least one arrangement (13a, 13b) of at least four shaped conductors (5) which are arranged alternately in two immediately adjacent layers (6a-g) and arType: GrantFiled: March 26, 2021Date of Patent: January 7, 2025Assignee: Valeo Siemens eAutomotive Germany GmbHInventors: Boris Dotz, Christian Finger-Albert
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Patent number: 12191731Abstract: A stator for interacting with magnets carried by a rotor of an electric machine, the stator comprising: an active region arranged to be aligned with the magnets carried by the rotor; a first inactive region and a second inactive region, wherein the first and second inactive regions are separated by the active region; and a slotless phase winding comprising a plurality of conductive elements, wherein each conductive element comprises a conductor provided in an insulating housing, and wherein the slotless phase winding is arranged in a serpentine structure comprising: a first active segment in which the conductive elements extend across the active region from the first inactive region to the second inactive region; a second active segment in which the conductive elements extend across the active region from the second inactive region to the first inactive region; and an inactive segment coupling the first active segment to the second active segment, wherein the inactive segment comprises a turn provided in theType: GrantFiled: June 23, 2022Date of Patent: January 7, 2025Assignee: ETA Green Power LimitedInventors: Liam Bowman, Henry Collings
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Patent number: 12184120Abstract: A stator module is applicable to a motor. The motor comprises z slots, 2p poles, and m phases, where z, p, and m are integers. The stator module includes a stator core and a stator winding. The stator core has multiple stator slots, and the stator slots are distributed in a circumferential direction of the stator core. The stator winding includes a first-class conductor segment, a second-class conductor segment, and a third-class conductor segment. A pitch between a first in-slot portion and a second in-slot portion of the first-class conductor segment is (y?1) stator slots, a pitch between a first in-slot portion and a second in-slot portion of the second-class conductor segment is y stator slots, and a pitch between a first in-slot portion and a second in-slot portion of the third-class conductor segment is (y+1) stator slots, where y is an integer and y=z/2p.Type: GrantFiled: January 10, 2024Date of Patent: December 31, 2024Assignee: BYD COMPANY LIMITEDInventors: Shenglang Shu, Bin You
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Patent number: 12176755Abstract: Systems are provided for an electric motor. In one example, a system may include a plurality of segmented slots positioned around an inner surface of a stator, wherein each of the plurality of segmented slots comprises a first section comprising a first width and a second section comprising a second width, the second width different than the first.Type: GrantFiled: June 29, 2022Date of Patent: December 24, 2024Assignee: DANA TM4 INC.Inventor: Benoit Blanchard St-Jacques
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Patent number: 12176775Abstract: A stator winding structure (100) for a motor. The motor is a three-phase alternating current motor having eight poles. Each phase comprises four shunt wound branches. The stator winding consists of multiple U-shaped flat copper wires (10). A connection portion of each U-shaped flat copper wire (10) disposed in the motor is located on the same side with respect to the motor. The technical solution also provides a motor comprising the stator winding structure (100) and a vehicle comprising the motor.Type: GrantFiled: December 31, 2019Date of Patent: December 24, 2024Assignee: SAIC MOTOR CORPORATION LIMITEDInventors: Jun Zhu, Jian Wang, ShaoRui Huang, JieBao Li, HaoChun Li, YuanLiang Min
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Patent number: 12170466Abstract: Systems and methods to form concentrated motor windings may include bending wires into a U-shape, inserting the wires onto a stator pole, bending ends of the wires around the stator pole, and welding respective pairs of the ends of the bent wires. In some example embodiments, the U-shape may include a twist along a central portion thereof. In other example embodiments, a twist may be introduced along the respective pairs of bent ends of the wires that are then welded. In addition, the wires may be stacked and laterally inserted onto the stator pole. Further, the wire bending, twisting, insertion, welding, and other forming processes may be performed by automated or robotic machinery or equipment.Type: GrantFiled: June 7, 2022Date of Patent: December 17, 2024Assignee: Amazon Technologies, Inc.Inventors: Tausif Husain, Rick Roller, Sung Ho An
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Patent number: 12095319Abstract: The present disclosure describes a motor stator, in which a flux winding is bent into a wave shape, and may be divided into a plurality of first parts, a plurality of second parts, and a plurality of third parts based on winding positions on a stator core. In a process of embedding flux windings into stator slots on the stator core, the flux windings may be directly sunk into the stator slots one by one, so that the second part is embedded into the stator slot, the first part is located on an outer surface of the stator core, and the third part is located on an inner surface of the stator core.Type: GrantFiled: August 1, 2022Date of Patent: September 17, 2024Assignee: Huawei Digital Power Technologies Co., Ltd.Inventors: Chaojie Shi, Chaoqiang Wu, Jinhua Chen
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Patent number: 12081075Abstract: Improved electric machines with tuned coils, integrated power electronics, and stator and rotor cooling assemblies.Type: GrantFiled: August 30, 2021Date of Patent: September 3, 2024Assignees: OHIO STATE INNOVATION FOUNDATIONInventors: Codrin Cantemir, Olivia Bruj
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Patent number: 12075222Abstract: The present invention provides a process of fabricating a capacitive microphone such as a MEMS microphone with two capacitors. The two capacitors may be so fabricated that the signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone are significantly improved.Type: GrantFiled: July 9, 2021Date of Patent: August 27, 2024Assignee: GMEMS TECH SHENZHEN LIMITEDInventors: Guanghua Wu, Xingshuo Lan, Zhixiong Xiao
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Patent number: 12075223Abstract: The present invention provides a process of fabricating a capacitive microphone such as a MEMS microphone with two capacitors. The two capacitors may be so fabricated that the signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone are significantly improved.Type: GrantFiled: July 9, 2021Date of Patent: August 27, 2024Assignee: GMEMS TECH SHENZHEN LIMITEDInventors: Guanghua Wu, Xingshuo Lan, Zhixiong Xiao
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Patent number: 12068647Abstract: The present invention relates to a coil module for an electric machine, comprising: a first coil disc having at least one winding of an electrically conductive material; a second coil disc having at least one winding of an electrically conductive material; wherein the first coil disc and/or the second coil disc comprise/comprises a substantially annular recess; wherein the first coil disc and the second coil disc are attached to each other such that a substantially annular cooling channel for a coolant is formed between the first coil disc and the second coil disc by the substantially annular recesses/recess.Type: GrantFiled: May 23, 2022Date of Patent: August 20, 2024Assignee: Vaionic Technologies GmbHInventors: Yannick Dominik, Jörg Berthelmann, Georg Franz
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Patent number: 12069455Abstract: The present invention provides a process for fabricating a capacitive microphone such as a MEMS microphone. In the microphone, a movable or deflectable membrane/diaphragm may be so fabricated that it moves in a lateral manner relative to a fixed backplate, instead of moving toward/from the fixed backplate. The fixed backplate may be so fabricated that it includes an electrical insulator sandwiched between two sub-conductors to cancel systematic/background noise. The squeeze film damping is substantially avoided, and the performance, such as signal to noise ratio, of the fabricated microphone is significantly improved.Type: GrantFiled: June 19, 2021Date of Patent: August 20, 2024Assignee: GMEMS TECH SHENZHEN LIMITEDInventors: Guanghua Wu, Xingshuo Lan
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Patent number: 12062959Abstract: The present invention relates to a coil module for an electric machine, comprising at least one coil disc comprising a coil carrier made of an electrically insulating material and a plurality of individual windings made of an electrically conductive material and being circumferentially arranged on the coil disc around a center of the coil disc. Each of the windings comprises two active regions extending radially from the center and two passive regions extending tangentially at its radially outer and inner edges, wherein, in a top view of the coil disc, the active regions of different windings do not overlap each other, but each passive region of one of the windings partially overlaps the corresponding passive regions of the two directly adjacent windings. In the active regions, the respective winding in cross-section has a greater thickness in the axial direction than in the passive regions.Type: GrantFiled: May 23, 2022Date of Patent: August 13, 2024Assignee: Vaionic Technologies GmbHInventors: Yannick Dominik, Jörg Berthelmann, Georg Franz
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Patent number: 12046973Abstract: A stator includes a stator core, stator windings provided in the stator core, and a busbar connected to coil end portions of the stator windings. The busbar is composed of a flat conductor body and has a main body portion extended in a circumferential direction in parallel to a circumference of the stator core and multiple protruding portions extended radially from the main body portion. The protruding portions and the coil end portions are joined by laser welding. A thickness of each of the protruding portions in a laser beam emitting direction in which a welded portion is irradiated with a laser beam during the laser welding is greater than a plate thickness of the main body portion in the same direction.Type: GrantFiled: May 31, 2022Date of Patent: July 23, 2024Assignee: DENSO CORPORATIONInventor: Toshihiro Takei
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Patent number: 12046967Abstract: A stator for an electric machine, comprising a stator core and a stator winding, wherein the stator core has a plurality of slots, which are spaced apart in a circumferential direction and have a depth running in the radial direction, and allows the arrangement of slot sections of the stator winding in a plurality of radially spaced-apart radial positions, wherein the stator has a strip-like winding unit comprising a first and a second winding conductor, wherein the two winding conductors run in a first and a second layer of the winding unit and each comprises: a plurality of straight slot sections which run in a transverse direction of the winding unit and are arranged in parallel, a plurality of first bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a first longitudinal side of the winding unit, a plurality of second bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a second lType: GrantFiled: April 22, 2020Date of Patent: July 23, 2024Assignee: Schaeffler Technologies AG & Co. KGInventors: Richard Bernauer, Stefan Rieß, Johann Oswald, Michael Menhart
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Patent number: 12040673Abstract: In one aspect of the present invention, a motor includes a rotor that is rotatable about a center axis line and a stator that is disposed on a radial outside of the rotor. The stator includes a winding portion including a plurality of conductor connection bodies in which a plurality of conductors are connected in series and a stator core in which a plurality of slots through which the conductor connection body passes are provided. The winding portion includes a neutral point portion located on one side in the axial direction of the stator core, ends of the three conductor connection bodies being electrically connected to the neutral point portion. The neutral point portion includes two connection portions to which two of different combinations of the ends of the three conductor connection bodies are connected.Type: GrantFiled: March 23, 2022Date of Patent: July 16, 2024Assignee: NIDEC CORPORATIONInventor: Xiaoli Han
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Patent number: 11967873Abstract: A fractional slot electric motor includes a stator core having a first side, a second side, and stator slots extending between the first and second sides. The fractional slot electric motor also includes a coil having a plurality of coil elements, where each coil element extends through at least one of the stator slots. Each coil element is coupled to at least one other coil element along the first side of the stator core. A first subset of the coil elements includes coil elements coupled to each other along the second side of the stator core. A second subset of the coil elements includes loop coil elements, where each loop coil element extends from one of the stator slots to another of the stator slots along the second side of the stator core without being connected to other coil elements along the second side of the stator core.Type: GrantFiled: May 5, 2023Date of Patent: April 23, 2024Assignee: Canoo Technologies Inc.Inventors: James Dameron, Evan Filter, Phillip Weicker, Charles Garmel
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Patent number: 11949303Abstract: An object of the present invention is to efficiently cool a rotor coil even in a rotor provided with a wire connection plate. A stator of a rotating electric machine includes a stator core, a plurality of segment coils protruding from slots of the stator core and arranged in a radial direction, a connection conductor that connects the segment coils, and an insulating member that holds the connection conductor. The insulating member includes a through hole through which the segment coil penetrates and is accommodated. An opening through which a coolant can flow into the through hole is provided on an inner peripheral side of the insulating member.Type: GrantFiled: May 29, 2020Date of Patent: April 2, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Kenichi Nakayama, Hiromitsu Okamoto, Satoshi Yamamura, Tomohiro Adachi
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Patent number: 11942824Abstract: An axial flux electrical machine, such as an electric motor, dynamo, pump, generator, or alternator has a casing with vents or openings enabling cooling or pumped media to flow into and out of the casing when the rotor of the electrical machine rotates. The stator is formed from conductive elements connected at their axial outer regions by interconnecting members. Conductive elements have a gap or space to direct cooling through the winding to the central region. A portion of the windings of the stator are spaced apart to allow media to flow between the windings to the central axis area and then is allowed flow outward between the rotor and the stator.Type: GrantFiled: May 21, 2019Date of Patent: March 26, 2024Inventor: John Robert Culleton, III
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Patent number: 11942822Abstract: Presented are electric machines with optimized stator tooth geometries and multi-gauge stator conductors, methods for making/using such electric machines, and motor vehicles equipped with such electric machines. An electric machine includes a housing, a rotor assembly rotatably attached to the housing, and a stator assembly coaxial with and separated by an airgap from the rotor assembly. The rotor assembly includes one or more magnets mounted to a rotor core. The stator assembly includes a stator core with multiple axially elongated, circumferentially spaced stator slots, multiple radially aligned stator teeth interleaved between and separating the slots, and multiple electromagnetic windings wound through the slots. Each stator tooth has an elongated tooth body with a tooth head at a radial end of a tooth root, which attaches to a cylindrical hub of the stator core. The tooth head has an axial cross-section with a trapezoidal crown integral with a rectangular tip.Type: GrantFiled: December 23, 2021Date of Patent: March 26, 2024Assignee: GM Global Technology Operations LLCInventors: Mohammad F. Momen, Edward L. Kaiser
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Patent number: 11936261Abstract: An electric machine comprising a stator with a plurality of open slots accommodating double-layer distributed winding with conductors transposed in the end-winding area. The conductors are litz wire conductors and the end-winding portions of the conductor are not twisted or turned around the axis of the conductor.Type: GrantFiled: February 6, 2020Date of Patent: March 19, 2024Assignee: Kongsberg Maritime ASInventors: Jon Ivar Koa, Roar Furuhaug, Stev Erlend Skaar, Njål Rotevatn
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Patent number: 11909261Abstract: A stator module (10) and a motor are provided. The stator module (10) includes a stator core (1) and a stator winding (2). The stator core (1) includes a plurality of stator slots (11), and the plurality of stator slots (11) are distributed in a circumferential direction of the stator core (1). A first winding coil (21) of each phase of the stator winding (2) includes a first winding part (211) and a second winding part (212) connected end to end, the first winding part (211) includes a first crossing segment (2111) to a sixth crossing segment (2116), and the second winding part (212) includes a seventh crossing segment (2121) to a twelfth crossing segment (2126). A second winding coil (22) of each phase of the stator winding (2) includes a third winding part (221) and a fourth winding part (222) connected end to end.Type: GrantFiled: May 30, 2019Date of Patent: February 20, 2024Assignee: BYD COMPANY LIMITEDInventors: Shenglang Shu, Bin You
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Patent number: 11888349Abstract: A stator assembly of a hairpin winding motor including hairpin coils continuously connected along a circumferential direction to form a coil winding; and a stator core configured to fix the hairpin coils. Outer circumferential surfaces of the hairpin coils formed in the circumferential direction contact an inner circumferential surface of the stator core.Type: GrantFiled: December 1, 2020Date of Patent: January 30, 2024Assignee: Hyundai Mobis Co., Ltd.Inventors: Yong Ho Kim, Min Mo Koo, Joon Hyung Kim
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Patent number: 11867119Abstract: An electric generator equipped in a multi-shaft gas turbine engine for aircraft, includes: a rotor attached to the rear end portion of a low-pressure shaft rotatably supported by a bearing in the gas turbine engine; a stator provided around the rotor; wherein the electric generator has no structure to support the low-pressure shaft and the rotor.Type: GrantFiled: February 10, 2022Date of Patent: January 9, 2024Assignee: IHI CorporationInventor: Naoki Seki
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Patent number: 11863108Abstract: Device for determining the angular position of a rotor of a rotary electric machine on the basis of signals delivered by a plurality of position sensors, including a circuit producing a control loop for estimating position of the rotor, delivering at output a signal representative of the position, and a circuit for dynamic normalization by the amplitude of the first harmonic of each signal originating from a position sensor. The circuit receives as input each signal originating from a position sensor, and at least one image of the signal representative of the position of the rotor and is configured to demodulate each signal by the image of the signal, determine, at the end of this demodulation, amplitude of the first harmonic of this signal originating from a position sensor, and normalize each signal by dividing it by the amplitude of the first harmonic of the previously determined signal.Type: GrantFiled: November 9, 2020Date of Patent: January 2, 2024Assignee: VALEO EQUIPEMENTS ELECTRIQUES MOTEURInventor: Laurent Labiste
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Patent number: 11791700Abstract: An apparatus for bending ends, arranged in annular layers, of bar conductors for an electrical machine are arranged in a stator main body having multiple coaxially arranged coupling elements with coupling recesses, by which the ends of the bar conductors can be taken layer by layer and plastically deformed. Each coupling element has a driving platform, which can be moved in the axial direction together with the coupling element. The coupling element belonging to a driving platform can be rotated on the driving platform. All of the driving platforms move axially on a common climbing linkage. Each driving platform has a dedicated first driving device for axially moving the driving platform and a dedicated second driving device for rotating the coupling element on the driving platform, wherein the two driving devices are moved axially, together with the driving platform. The apparatus is of a simple construction requiring little installation space.Type: GrantFiled: September 10, 2021Date of Patent: October 17, 2023Assignee: FELSOMAT GmbH & Co. KGInventors: Juergen Peschina, Peter Haberstroh
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Patent number: 11777355Abstract: A stator to be provided in an electric rotating machine includes a stator core and a distributed winding coil. The stator core has a plurality of slots. The distributed winding coil includes a plurality of segment coils coupled to each other. Each of the segment coils is accommodated across a pair of slots out of the plurality of slots. The distributed winding coil has a coil structure including a plurality of parallel coils coupled to each other in series. Each of the parallel coils includes two or more of the segment coils. The two or more segment coils are coupled to each other in parallel and are accommodated across the same pair of slots out of the plurality of slots. The two or more segment coils included in each of the parallel coils are disposed adjacent to each other in a radial direction in the same pair of slots.Type: GrantFiled: June 23, 2020Date of Patent: October 3, 2023Assignee: SUBARU CORPORATIONInventors: Masatoshi Hanaoka, Nobuhiko Tanaka
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Patent number: 11765534Abstract: The present invention provides a capacitive microphone such as a MEMS microphone with two capacitors. The signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone is significantly improved.Type: GrantFiled: December 13, 2020Date of Patent: September 19, 2023Assignee: GMEMS TECH SHENZHEN LIMITEDInventors: Guanghua Wu, Xingshuo Lan, Zhixiong Xiao
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Patent number: 11765533Abstract: The present invention provides a capacitive microphone such as a MEMS microphone with two capacitors. The signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone is significantly improved.Type: GrantFiled: December 13, 2020Date of Patent: September 19, 2023Assignee: GMEMS TECH SHENZHEN LIMITEDInventors: Guanghua Wu, Xingshuo Lan, Zhixiong Xiao
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Patent number: 11764628Abstract: A stator for an electric machine includes a plurality of pins arranged on concentric circles at different distances to a stator center in slots in the stator, and each concentric circle forms a layer. In each case, six pins in different layers are serially connected to one another and form a winding. A first pin of the winding is located in a first slot in the 6n-1 layer, wherein n is an integer. A second pin of the winding is located in a second slot in the 6n layer. A third pin of the winding is located in the first slot in the 6n-2 layer. A fourth pin of the winding is located in the second slot in the 6n-3 layer. A fifth pin is located in the first slot in the 6n-5 layer. A sixth pin of the winding is located in the second slot in the 6n-4 layer.Type: GrantFiled: December 16, 2020Date of Patent: September 19, 2023Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBHInventors: Boris Dotz, Christian Finger-Albert
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Patent number: 11757322Abstract: The disclosure relates to winding arrangements for electrical machine stators. Example embodiments include a coil for a tooth element of an electrical machine stator, the coil formed from a plurality of hairpin wires having pairs of legs passing through first and second slots on opposing radial faces of the tooth element, the coil having n full turns passing around the tooth element, the first and second slots each having 2n+2 slot positions having a depth d? for accommodating a single hairpin wire, the slots each having a first slot position at a first common end and a 2n+2th slot position at a second opposing end, the coil having first and second terminal connections connected to hairpin wires extending through the first and second slots at respective first and second slot positions.Type: GrantFiled: November 20, 2020Date of Patent: September 12, 2023Assignee: ROLLS-ROYCE plcInventor: Vladimir A. Shirokov
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Patent number: 11735968Abstract: A rotary electric machine includes a rotor, a stator, and stator windings. The stator winding has a plurality of slot conductor groups having a plurality of slot conductors of the same phase. A plurality of slot conductors of the slot conductor group are inserted into a predetermined number (Ns) of slots continuously arranged in a circumferential direction of the stator core such that the slot and the layer are adjacent to each other. The predetermined number (Ns) is set to “Ns=NSPP+1,” where “NSPP” denotes the number of slots per pole per phase.Type: GrantFiled: August 27, 2020Date of Patent: August 22, 2023Assignee: Hitachi Astemo, Ltd.Inventors: Yasuyuki Saito, Yuji Kanoh, Toshio Ishikawa
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Patent number: 11705790Abstract: The invention relates to a method for producing an arrangement for a plug-in coil of an electrical machine, comprising the steps of: providing a core with slots; providing coil elements which are rod-shaped and have a proximal end and a distal end; inserting the coil elements into the slots from an end side of the core with the distal end at the front in such a way that the proximal end is arranged in the region of the end side and the distal end is arranged in the region of an opposite end side of the core or adjacent to it; and producing a respective jointed connection for the distal ends or the proximal ends of a first coil element and of a second coil element with an associated first connecting element on the opposite end side or the end side of the core, wherein, here, before joining between the respective joining partners, specifically the distal end or the proximal end of the first coil element and a first joining section of the first connecting element and also the distal end or the proximal end of thType: GrantFiled: December 6, 2018Date of Patent: July 18, 2023Assignee: Aumann AGInventors: Ludger Martinschledde, Florian Sell-Le Blanc, Timo Schmit
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Patent number: 11682995Abstract: The present embodiment is a high rotor pole switched reluctance machine (HRSRM) which provides a plurality of combinations of the number of rotor poles Rn and number of stator poles Sn utilizing a numerical relationship defined by a mathematical formula, Rn=2Sn?Fp, when Sn=m×Fp, wherein Fp is the maximum number of independent flux paths in the stator when stator and rotor poles are fully aligned, and m is the number of phases. The mathematical formulation provides an improved noise performance and design flexibility to the machine. The mathematical formulation further provides a specific number of stator and rotor poles for a chosen m and Fp. The HRSRM can be designed with varying number of phases. The HRSRM provides a smoother torque profile due to a high number of strokes per revolution.Type: GrantFiled: March 7, 2022Date of Patent: June 20, 2023Assignee: Turntide Technologies, Inc.Inventors: Mahesh Krishnamurthy, Trevor Creary, Piyush Desai, Mark Johnston
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Patent number: 11677287Abstract: A stator includes a stator core and a stator winding. The stator core has a cylindrical shape and a plurality of slots. The stator winding includes a plurality of phase windings each including a plurality of segment conductors inserted into the slots and coupled to each other in series. Each of the segment conductors has a pair of straight parts and a bend. The pair of straight parts is accommodated in two of the plurality of slots. The bend protrudes from an end face of the stator core and couples the pair of straight parts to each other. In each of the plurality of slots, the number of the bends protruding from the end face of the stator core to extend in one of circumferential directions matches the number of the bends protruding from the end face of the stator core to extend in the other of the circumferential directions.Type: GrantFiled: November 19, 2020Date of Patent: June 13, 2023Assignee: SUBARU CORPORATIONInventors: Kenichi Fukunaga, Kimihiro Nagase
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Patent number: 11658532Abstract: A stator has a stator core composed of teeth and slots. Segment coils are inserted into the corresponding slots. The segment coil projecting from the slot has an exposed conductor part and a covered conductor part covered with an electrical insulation film. The exposed conductor part is arranged at the distal end side from the covered conductor part of the segment coil. The segment coils are connected together through the exposed conductor parts thereof projecting from the slots. The exposed conductor part has a thickness T2 thinner than a thickness T1 of the covered conductor part. A step part is formed at a position of the stator core side, adjacent to the exposed conductor part of the segment coil. The step part and the covered conductor part are covered with the electrical insulation film continuously from the stator core side of the covered conductor part.Type: GrantFiled: September 14, 2020Date of Patent: May 23, 2023Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryosuke Maruyama, Hiroaki Takeda, Yasuhiro Makido, Toshiro Nakamura, Ken Shirai
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Patent number: 11632006Abstract: In one embodiment, a stator coil that includes a first turn with two or more strands is provided. The first turn includes first and second opposite sides, a coil termination at a first end of the first turn and an inversion region disposed at a second end, opposite the coil termination. The stator coil also includes at least one additional turn with two or more strands. The at least one additional turn includes first and second opposite sides, and an inversion region located adjacent to the inversion region of the first turn. The first and second sides of the first turn are inverted relative to the first and second sides of the at least one additional turn outside their respective inversion regions.Type: GrantFiled: April 27, 2020Date of Patent: April 18, 2023Assignee: Honeywell International Inc.Inventors: Cristian E Anghel, Tom Phielix, Yongbae Jung
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Patent number: 11621617Abstract: The invention relates to a stator (2) comprising an annular body (4) having a side face (6) from which a plurality of radial teeth (8) extend, said teeth being angularly spaced in such a way as to define slots (10), and a plurality of conductive needles (15A, 15B), each conductive needle comprising two conductive segments (16A, 16B, 16C, 16D) connected by an elbow connector (18), the conductive segments being stacked one above the other in the slots (10) so as to form N layers which are parallel or substantially parallel to the side face (6) of the annular body. Each conductive needle (15A, 15B) comprises a conductive segment present in two separate slots, with one conductive segment present in a slot E in such a way as to occupy a layer (Ci) and another conductive segment present in a slot E+P in such a way as to occupy a layer (Ci+2), P being a pitch that is predetermined in a first direction of orientation.Type: GrantFiled: December 19, 2018Date of Patent: April 4, 2023Assignee: Valeo Equipements Electriques MoteurInventors: Vincent Ramet, Jean Duquesne, Stéphane De Clercq, Julien Pauwels, Laurent Delassus, Humberto Menezes
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Patent number: 11601763Abstract: The present invention provides a capacitive microphone including a MEMS microphone. In the microphone, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to a fixed backplate, instead of moving toward/from the fixed backplate. The fixed backplate includes an electrical insulator sandwiched between two sub-conductors to cancel systematic/background noise. The squeeze film damping is substantially avoided, and the performance, such as signal to noise ratio, of the microphone is significantly improved.Type: GrantFiled: May 28, 2020Date of Patent: March 7, 2023Assignee: GMEMS TECH SHENZHEN LIMITEDInventors: Guanghua Wu, Xingshuo Lan
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Method and circuit arrangement for determining an incorrect operating state of an electrical machine
Patent number: 11594997Abstract: The disclosure relates to a method for determining an incorrect operating state of an electrical machine with the aid of an electronic circuit having at least one comparator. The electrical machine is controlled with a pulse width modulation signal. The pulse width modulation signal is demodulated. A first signal, which represents the demodulated pulse width modulation signal, is compared with a second signal. The second signal represents a rotational speed or a rotational angle of the electrical machine and/or a current intensity of the electrical machine. This comparison is carried out with the aid of the at least one comparator. An error signal is generated based on the comparison in order to determine the incorrect operating state of the electrical machine.Type: GrantFiled: September 24, 2020Date of Patent: February 28, 2023Assignee: Rolls-Royce Deutschland Ltd & Co KGInventor: Wolfram Siegfried Birkmayer -
Patent number: 11588383Abstract: A stator (1) for an electric motor, including; a plurality of pins (11, 12, 13, 14, 21, 22, 23, 24, 31, 32, 33, 34) which are arranged on at least two concentric circles; and an interface (10, 20, 30) with at least one contact face (19, 29, 39), which is connected to two electrically conductive legs (10a, 10b, 20a, 20b, 30a, 30b) and is supported by the legs, wherein the legs are connected to at least one pin on different concentric circles.Type: GrantFiled: February 27, 2020Date of Patent: February 21, 2023Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBHInventors: Mert Ciftcioglu, Dieter Sonnack
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Patent number: 11575289Abstract: Coil segments of the same phase are inserted into each group of circumferentially consecutive three slots. Assuming that the grouped three slots are A, B, and C, and six groups are U1 to U6, respectively, and that slot y of group Ux are slot Uxy, a coil starting from the slot U1A is wired to pass through one turn of a stator in the order of slots U1A?U2B?U3B?U4C?U5C?U6A, and connected to slot U1A of the next turn. In this turn, coil segments with a wide straddle width are used for the connections of U1A?U2B and U3B?U4C, and a coil segment with a narrow straddle width is used for the connection of U5C?U6A.Type: GrantFiled: June 26, 2020Date of Patent: February 7, 2023Assignee: ODAWARA ENGINEERING CO., LTD.Inventor: Noburo Miyawaki
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Patent number: 11569700Abstract: To obtain a rotating electric machine capable of downsizing the rotating electric machine in an axial direction and in a radial direction. A first inner-peripheral-side terminal includes a first conductor-exposed portion and a second inner-peripheral-side terminal includes a second conductor-exposed portion opposed to the first conductor-exposed portion. An opposing portion being a portion, at which the first conductor-exposed portion and the second conductor-exposed portion are opposed to each other, extends in a radial direction, and at least a part of the opposing portion of the first conductor-exposed portion and the second conductor-exposed portion is arranged on an inner side in the radial direction compared to the first outer-peripheral-side terminal and the second outer-peripheral-side terminal.Type: GrantFiled: October 28, 2020Date of Patent: January 31, 2023Assignee: Mitsubishi Electric CorporationInventors: Tatsuro Hino, Kohei Egashira, Shinya Matsunaga, Yasuhiro Hayasaka, Norihiro Murata, Kazuya Hasegawa, Katsuya Ito