Plural Field Windings Patents (Class 310/184)
  • Patent number: 10938281
    Abstract: A terminal connection of a rotary electromagnetic device and a method of connecting a terminal to an aluminum stator wire of the rotary electromagnetic device without changing stator configuration is described. A de-insulated portion at one of ends of the stator wire is connected to a small connection wire made of copper by ultrasonic welding to form a mutually welded stator wire and connection wire portion. The mutually welded stator wire and connection wire portion are soldered to the terminal to, therefore, form an electric connection between the stator wire and the terminal.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: March 2, 2021
    Assignee: INDIA NIPPON ELECTRICALS LIMITED
    Inventors: Raman Umashankar, Sivasubramanian Ravi Kumar, Murugan Sundar
  • Patent number: 10923978
    Abstract: An electric machine includes a stator core defining slots and hairpins disposed in the slots and selectively joined at connections to form windings. A U-shaped jumper has spaced legs interconnected by a U-portion. The legs are attached to a pair of the hairpins at a location radially outboard of the slots such that the U-portion faces the core. A terminal lead of the windings radially extends between the legs.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: February 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Kyi Shin Shiah, Huifen Qiu
  • Patent number: 10892660
    Abstract: An electrical machine with a rotor and a stator. The rotor or the stator has at least one coil with a coil core and a coil winding, which surrounds the coil core. The coil winding has at least one turn that is formed from a flat conductor, which is bent a around a plurality of bending axes, which are spaced apart from one another and are parallel, and, as viewed in section, is S-shaped and/or has a meandering shape. The flat conductor has a plurality of layers that are insulated from one another, at least in regions, and/or a plurality of slot-shaped recesses.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: January 12, 2021
    Assignee: AUDI AG
    Inventors: Peter Juris, Korbinian Weber
  • Patent number: 10819175
    Abstract: A unit coil includes: first, second, third, and fourth turn portions extending in a bent manner from first, second, third, and fourth slot accommodation portions and each connecting the slot accommodation portions to each other; and first, second, third, and fourth leg portions. Recesses are formed in surfaces opposed to each other at bent parts of the turn portions or bent parts of the turn portion and the leg portion, that extend in a bent manner toward the same side in the circumferential direction from the slot accommodation portions adjacent to each other in the radial direction.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: October 27, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tatsuro Hino, Kohei Egashira, Tetsuya Yokogawa, Hiroyuki Akita, Akira Hashimoto, Masashi Nakamura
  • Patent number: 10784736
    Abstract: A multi-phase electric machine having plurality of windings are mounted on the stator core that define a plurality of phases wherein, for each phase, the windings include at least two parallel windings, each winding comprising a pair of continuous wires which are connected in series. For each pole, the parallel windings fill one or more central slots and two outer slots. Each winding fills each central slot twice the number of times that the winding fills each outer slot to thereby define a slot fill ratio of 2:1 between central slots and outer slots and wherein each wire of the wire pair forming a winding fills the slots in a ratio that differs from the slot fill ratio. Phase shift end loops shift the windings from one outer slot to the other outer slot. Position change end loops alter the relative positions of the parallel windings.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: September 22, 2020
    Assignee: BorgWarner Inc.
    Inventor: Kirk E. Neet
  • Patent number: 10770956
    Abstract: The invention relates to an electric asynchronous machine (1), in particular an induction machine, comprising: —a cylindrical stator (2) with stator teeth (22) on a stator yoke (21), wherein a ratio between a yoke height (hy1) of the stator yoke (21) in the radial direction and a groove height (hn1) of the stator grooves (23) in the radial direction ranges from 1.75 to 2.5; —a cylindrical rotor (4) with poles (42) on a rotor yoke which are defined by short-circuit windings in a rotor body (41), wherein a ratio between the yoke height of the rotor body (41) in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: September 8, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Marcus Alexander, Arndt Kelleter, Miguel Ruiz De Larramendi, Patrick Heuser, Mercedes Herranz Gracia
  • Patent number: 10763766
    Abstract: The present teaching relates to a magnetic sensor residing in a housing. The magnetic sensor includes an input port and an output port, both extending from the housing, wherein the input port is to be connected to an external alternating current (AC) power supply. The magnetic sensor also includes an electric circuit which comprises an output control circuit coupled with the output port and configured to be at least responsive to a magnetic induction signal and the external AC power supply to control the magnetic sensor to operate in a state in which a load current flows through the output port. The magnetic induction signal is indicative of at least one characteristic of an external magnetic field detected by the electrical circuit and the operating frequency of the magnetic sensor is positively proportional to the frequency of the external AC power supply.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: September 1, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Chi Ping Sun, Fei Xin, Ken Wong, Shing Hin Yeung, Hui Min Guo, Shu Zuo Lou, Xiao Ming Chen, Guang Jie Cai, Chun Fai Wong, Shu Juan Huang, Yun Long Jiang, Yue Li, Bao Ting Liu, En Hui Wang, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui
  • Patent number: 10727773
    Abstract: A field winding type rotating electric machine includes: a stator armature winding wound on a stator core; a rotor field winding wound on a rotor core; a rectifying element connected to both ends of the rotor field winding; a capacitor having one end connected to one end of the rectifying element and the other end connected between the two ends of the rotor field winding; and a control circuit configured to supply electric current, which includes a fundamental component for generating rotational torque and a harmonic component having a shorter period than the fundamental component and superimposed on the fundamental component, to the stator armature winding and thereby induce excitation current in the rotor field winding. Moreover, an inductance of the rotor field winding and a capacitance of the capacitor are in a resonant relationship with a frequency of the harmonic component.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: July 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masahiro Seguchi, Junichi Nakazono
  • Patent number: 10720820
    Abstract: A rotating electric machine includes: a stator core having a plurality of slots aligned along a circumferential direction; a stator having a stator coil with an enamel coating inserted into the slots of the stator core; and a rotor rotatably arranged over the stator core through a given gap. The stator coil includes: main coils of a plurality of phases in which a plurality of segment coils each having a rectangular cross-section wire formed into a substantially U-shaped wire in advance is connected to each other; a first sub-coil having a lead wire led from the slots and attached with an AC terminal, and connected to one end of the respective main coils; and a second sub-coil having a neutral wire led from the slots, and connected to the other end of the respective main coils. The lead wire and the neutral wire are each formed of a wire with a bend structure having a plurality of straights and bends.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: July 21, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kenichi Nakayama, Yoshimi Mori, Takahiro Omori, Tomoaki Kaimori, Tsuyoshi Gotou, Hiromitsu Okamoto, Naoki Nishikawa, Takashi Genmoto
  • Patent number: 10679789
    Abstract: A method of manufacturing a high-density coil formed by press working a coil to cope with the manufacture of high-density coils having various cross-sectional shapes. The method includes: a step of setting the coil at a predetermined press working position in a press working machine; and a step of sequential press working the coil, which is set at the predetermined press working position, in a plurality of directions sequentially with a time lag.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: June 9, 2020
    Assignee: SELCO CO., LTD.
    Inventor: Hiroshi Sakurai
  • Patent number: 10680477
    Abstract: A brushless electric motorsystem having integrated power stages, said electric motor system comprising a rotor, a stator, a plurality of power stages, and a cooling system comprising a substantially flat hollow main cool body arranged to support the flowing of a cooling medium inside said hollow main cool body for cooling said main cool body, a base cooling plate connected to a first flat surface of said hollow main cool body and to said plurality of power stages for transferring heat between said plurality of power stages and said base cool plate, heat resistance inserts connected to said base cooling plate and said plurality of electrically excitable coils for transferring heat between said plurality of coils and said base cooling plate wherein said heat resistance inserts provide for a thermal conductivity, thereby creating a thermal buffer such that said electrically excitable coils are cooled less compared to said power stages, by said cooling system.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: June 9, 2020
    Assignee: Saluqi Holding B.V.
    Inventor: Martinus Henricus Renier Klomp
  • Patent number: 10644558
    Abstract: A stator for an electric machine includes a generally cylindrical stator core having a plurality of circumferentially-spaced and axially-extending core teeth that define a plurality of circumferentially-spaced and axially-extending core slots in a surface thereof, a main winding having a plurality of coils, each of the coils including a plurality of turns occupying the plurality of slots in the stator core, and a tertiary excitation winding having a plurality of coils, each of the coils including a single turn occupying at least a subset of the plurality of slots in the stator core. The coils of the main winding are unevenly arranged in the plurality of slots.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: May 5, 2020
    Assignee: Transportation IP Holdings, LLC
    Inventor: Rihong Mo
  • Patent number: 10637315
    Abstract: A stator includes a stator core having slots, a stator coil comprised of three phase windings, phase busbars each electrically connecting a corresponding one of the phase windings to an inverter, and a neutral busbar star-connecting the phase windings to define a neutral point therebetween. In each of the slots of the stator core, there are arranged K in-slot portions of the phase windings of the stator coil in K layers so as to be radially aligned with each other, where K is an even number. The phase and neutral busbars are electrically connected with those in-slot portions of the phase windings of the stator coil which are arranged at the radially outermost layer or the radially innermost layer in the respective slots of the stator core so as to be circumferentially spaced from one another by M slot-pitches or more, where M is a slot multiplier number.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: April 28, 2020
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 10637374
    Abstract: A magnetic sensor integrated circuit, a motor component and an application apparatus are provided. The integrated circuit includes: an input port, an output port, a magnetic field detection circuit and an output control circuit. The magnetic field detection circuit detects an external magnetic field and outputs magnetic field detection information. The output control circuit enables, at least based on the magnetic field detection information, the integrated circuit to switch at least between a first state, in which a current flows from the output port to an outside of the integrated circuit, and a second state, in which a current flows from the outside of the integrated circuit to the output port.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: April 28, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Chi Ping Sun, Fei Xin, Ken Wong, Shing Hin Yeung, Shu Juan Huang, Yun Long Jiang, Yue Li, Bao Ting Liu, En Hui Wang, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui
  • Patent number: 10637316
    Abstract: The present disclosure provides a stator of a drive motor including: a stator coil having three phases (U, V, W) and four parallels (U1˜U4, V1˜V4, W1˜W4); a stator core having eight poles and 48 slots, where the stator coil is inserted into a slot configured by four pitches along a clockwise direction in the stator core; a first slot being set as a slot that U1 phase is inserted into; a sixth slot being set as a draw out slot of U phase; a ninth slot being set as a draw out slot of V phase; a twelfth slot being set as a draw out slot of W phase; U1, U3, V1, V4, W1 and W4 phases, a winding draw out direction of which is a clockwise direction; and U2, U4, V2, V3, W2 and W3 phases, a winding draw out direction of which is a counter-anticlockwise direction.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: April 28, 2020
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Dongyeon Han, Yo Sub Sim, Jungwoo Lee, Hyoungjun Cho
  • Patent number: 10601285
    Abstract: An object of the present invention is to obtain a wiring board that achieves both of high mounting position accuracy and high solder strength in a circumferential direction. On the wiring board, an electronic component including a plurality of pins is mounted. The wiring board includes a base substrate, a plurality of wires provided on the base substrate, a resist covering the wires, and a plurality of footprints connected to the wires and having entire surfaces exposed in openings of the resist. The pins are soldered to the footprints by reflow. In the openings of the resist, directions in which the pins are led out are parallel to directions in which the wires are led out.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: March 24, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Junichiro Oya, Tomoaki Oikawa, Mineo Yamamoto, Hiroyuki Ishii, Hiroki Aso, Yuto Urabe
  • Patent number: 10601265
    Abstract: A stator is provided for a multiphase electric motor. The stator has a stator core having a multiplicity of stator teeth situated along a circumference of the stator core, coils wound on the stator teeth, and a multiplicity of connecting terminals for contacting the electric motor in a delta connection, with a parallel circuit of the coils per phase. Here, a respective winding wire of the coils is connected directly to the connecting terminal at each connecting terminal. In addition, a multiplicity of coils is connected in parallel to at least one of the connecting terminals, and the connecting terminals are provided for at least one of the phases in each case as a terminal pair made up of a main terminal and a secondary terminal connected to the main terminal by an electrically conductive connecting piece. In addition, an associated winding method is described.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: March 24, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Michael Palsule Desai
  • Patent number: 10581302
    Abstract: A stator for an electric motor may have a substantially annular shape centered around a central axis and may include a stator core having a plurality of teeth consecutively arranged in a circumferential direction, and a plurality of coils wound around respective teeth of the plurality of teeth. The plurality of coils may be grouped into a plurality of phase groups. The stator may include in association with the respective phase groups: at least one loop wire connecting at least two coils of the respective phase group in series with each other with the at least one loop wire being positioned at a radially inner portion of the stator, and at least two end wires respectively connected to two end coils of the respective phase group. The at least two end wires may be configured to be connected to a power source to energize the coils of the respective phase group.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: March 3, 2020
    Assignee: NIDEC CORPORATION
    Inventor: Juergen Schmid
  • Patent number: 10560008
    Abstract: A brushless direct current electric motor includes a first sub-motor and a second sub-motor. The first sub-motor and the second sub-motor share a common rotor, and each comprises an independent stator. The stators of each sub-motor comprises a plurality of teeth and a plurality of windings. The teeth of the first sub-motor and the teeth of the second sub-motor are interleavingly arranged in a circumferential direction or arranged side by side in an axial direction. The first sub-motor and the second sub-motor are configured to cooperatively work as a single electric motor to output a normal power. When one of the sub-motors breaks down, the other sub-motor can be operated independently to enhance reliability and safety of the brushless direct current electric motor.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: February 11, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Rui Feng Qin, Chuang Yu, Ning Sun, Kai Wu
  • Patent number: 10559999
    Abstract: A submersed electric motor includes a stator assembly arranged within an annular insulation chamber, and a stator with stator windings and a capacitive electric starter which is connected electrically thereto. The insulation chamber is formed between an outer tubular jacket, an inner tubular jacket, which is coaxial to the outer tubular jacket, with two annular end covers adapted to close the annular interspace between the outer jacket and the inner jacket. The submersed electric motor further includes a rotor arranged inside the inner tubular jacket. The capacitive electric starter includes at least two capacitors, which are mutually complementary, and have a transverse cross-section with an arc-like profile and are connected in parallel to each other.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: February 11, 2020
    Assignee: DAB PUMPS S.P.A.
    Inventors: Francesco Sinico, Giuliano Moretto
  • Patent number: 10547230
    Abstract: Electric motor systems and methods may provide highly efficient operation. The electric motor systems and methods discussed herein provide an oil filled motor that is low speed and utilizes permanent magnets. The electric motor may utilize a large number of poles and fractional slot design. Further, in some embodiments, the electric motor systems and methods may be suitable for use downhole.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: January 28, 2020
    Assignee: HENRY RESEARCH AND DEVELOPMENT, LLC
    Inventors: Trevor Hardway, Michael Salerno, Ronald David Wallin
  • Patent number: 10536056
    Abstract: An electric power tool 1 has a motor 3, a housing 2, a power cord 9, and a power supply control circuit portion 8. The housing 2 has a body portion 21 for accommodating the motor, a substrate accommodating portion 23 for accommodating a substrate on which a control substrate for operating the motor 3 is mounted, a handle portion 22 having one end connected to the body portion 21 and another end connected to the substrate accommodating portion 23. The power cord 9 extends from the substrate accommodating portion 23 and is connected to an AC power supply. The power supply circuit portion 8 has a choke coil 86 and a film capacitor 88 for filtering noise, and converts AC power supplied through the power cord 9 to DC power. The choke coil 86 and a film capacitor 88 are accommodated in the substrate accommodating portion 23. Accordingly, the handle portion can be formed shorter, and assemblability of the electric power tool can be improved.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: January 14, 2020
    Assignee: Koki Holdings Co., Ltd.
    Inventor: Toshiaki Koizumi
  • Patent number: 10530201
    Abstract: A stator includes a stator core having slots arranged in a circumferential direction and a stator coil formed by wave-winding continuous coil wires on the stator core. Each of the continuous coil wires has in-slot portions received in the slots and turn portions each of which connects, on the outside of the slots, one pair of the in-slot portions. The stator coil is formed, by spirally rolling a band-shaped coil wire bundle that is formed by bundling the continuous coil wires, into a cylindrical shape. In the coil wire bundle, the continuous coil wires are transposed at a plurality of locations. Moreover, in a range where the continuous coil wires extend in the circumferential direction of the stator core by one complete turn, at least one interval between adjacent transposition locations in the coil wire bundle is greater than or equal to the circumferential length of one turn portion.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 7, 2020
    Assignee: DENSO CORPORATION
    Inventors: Akito Akimoto, Masayuki Takiguchi, Atsuo Ishizuka
  • Patent number: 10516310
    Abstract: A stator includes a stator core having slots, a stator coil comprised of three phase windings, phase busbars each electrically connecting a corresponding one of the phase windings to an inverter, and a neutral busbar star-connecting the phase windings to define a neutral point therebetween. In each of the slots of the stator core, there are arranged K in-slot portions of the phase windings of the stator coil in K layers so as to be radially aligned with each other, where K is an even number. The phase and neutral busbars are electrically connected with those in-slot portions of the phase windings of the stator coil which are arranged at the radially outermost layer or the radially innermost layer in the respective slots of the stator core so as to be circumferentially spaced from one another by M slot-pitches or more, where M is a slot multiplier number.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: December 24, 2019
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 10511201
    Abstract: Provided is a stacking-type stator using a multilayer printed circuit board (PCB) in which torque generation can be maximized in an opposite rotor, and a single-phase motor and a cooling fan both using the same. The stacking-type stator includes: a multilayer printed circuit board (PCB) that is stacked and integrated with a penetration opening; and a coil pattern patterned on each layer of the multilayer PCB, wherein throughholes are formed to penetrate the multilayer PCB and connect the coil patterns, wherein the coil pattern comprises: inner and outer rotating direction pattern portions which are arranged in a circumferential direction at intervals along an inner circumference and an outer circumference concentrically with the penetration opening; and a radial pattern portion that interconnects the inner rotating direction pattern portion and the outer rotating direction pattern portion that are adjacent to each other and is disposed along the radial direction.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: December 17, 2019
    Assignee: AMOTECH CO., LTD.
    Inventors: Byung Soo Kim, Jin Gwan Kim
  • Patent number: 10491070
    Abstract: A stator includes a stator core having slots, a stator coil comprised of three phase windings, phase busbars each electrically connecting a corresponding one of the phase windings to an inverter, and a neutral busbar star-connecting the phase windings to define a neutral point therebetween. In each of the slots of the stator core, there are arranged K in-slot portions of the phase windings of the stator coil in K layers so as to be radially aligned with each other, where K is an even number. The phase and neutral busbars are electrically connected with those in-slot portions of the phase windings of the stator coil which are arranged at the radially outermost layer or the radially innermost layer in the respective slots of the stator core so as to be circumferentially spaced from one another by M slot-pitches or more, where M is a slot multiplier number.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 26, 2019
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 10483830
    Abstract: A magnetic sensor integrated circuit and a motor component are provided. The integrated circuit includes a housing, a semiconductor substrate arranged inside the housing, input ports and an output port which extend out from the housing, and an electronic circuit arranged on the semiconductor substrate. The electronic circuit includes a magnetic field detection circuit configured to detect and output a magnetic field inductive signal corresponding to an external magnetic field, and a voltage detection circuit configured to detect a specific voltage and output, in a case that the specific voltage reaches a predetermined value, a control signal for controlling the magnetic sensor integrated circuit to perform a preset action. The voltage detection circuit and the magnetic field detection circuit operate simultaneously.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: November 19, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Hui Min Guo, Shu Zuo Lou, Xiao Ming Chen, Guang Jie Cai, Chun Fai Wong
  • Patent number: 10461612
    Abstract: The invention relates to a planar positioning apparatus, comprising a stator, which comprises a coil arrangement comprising flat coils, a rotor which is arranged opposite the stator in the operating position of the positioning apparatus and has a planar magnet arrangement comprising a plurality of rows of magnets, wherein the plane which is spanned by the planar magnet arrangement is arranged parallel to the plane of the coil arrangement, a position detecting device for detecting the position of the rotor relative to the stator, and an evaluation and control device for evaluating position signals of the position detecting device and for controlling a current supply to the coil arrangement for controlling the position of the rotor with respect to the stator, wherein the coil arrangement comprises in each case n×3 (n?1) elongate flat coils which are interleaved with one another, in a first and second orientation of the coil arrangement which, over the majority of their extent, are designed as conductor runs of
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: October 29, 2019
    Assignee: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
    Inventor: Rainer Glöss
  • Patent number: 10439529
    Abstract: A sensor integrated circuit includes a rectifier, a power supply module, an output control circuit and a detecting circuit. The rectifier is configured to convert an external power supply into a first direct current power supply. The power supply module includes a voltage regulator configured to generate a second direct current power supply different from the first direct current power supply. The detecting circuit is powered by the second direct current power supply and configured to detect an inputted signal and correspondingly generate a control signal. The output control circuit is configured to control, in response to at least the control signal, the sensor integrated circuit to operate in at least one of a first state in which a current flows out from an output port and a second state in which a current flows in from the output port.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: October 8, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Chi Ping Sun, Fei Xin, Ken Wong, Shing Hin Yeung, Hui Min Guo, Shu Zuo Lou, Xiao Ming Chen, Guang Jie Cai, Chun Fai Wong, Shu Juan Huang, Yun Long Jiang, Yue Li, Bao Ting Liu, En Hui Wang, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui
  • Patent number: 10418873
    Abstract: A brushless motor includes: a stator including an annular stator core and first through twelfth teeth provided circumferentially on an inner circumference of the stator core in a sequential order; first through twelfth coils wound around the first through twelfth teeth, respectively, and forming a delta connection; and a rotor provided at a center of the stator. The first through twelfth coils are configured such that: the twelfth, first, six, and seventh coils in series connection form a W-phase; the eighth, ninth, second, and third coils in series connection form a U-phase, the fourth, fifth, tenth, and eleventh coils in series connection form a V-phase, coils of different phases adjacent to each other in an arrangement on the teeth are wound in the same direction, and coils of the same phase adjacent to each other are wound in opposite directions.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: September 17, 2019
    Assignee: MABUCHI MOTOR CO., LTD.
    Inventor: Yuya Iwasaki
  • Patent number: 10411540
    Abstract: Stator (1) of an electric motor, in particular an electric motor for refrigerant compressors, the stator (1) comprising a coil, the coil comprising windings (3), where at least one of the windings (3) comprises two wires (4, 5) of different materials that are electrically connected in parallel, where the windings (3) are disposed at least in sections in mounting slots (2) of the stator (1).
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: September 10, 2019
    Assignee: SECOP AUSTRIA GMBH
    Inventor: Hans-Peter Schögler
  • Patent number: 10411539
    Abstract: Winding bodies include: a first terminal wire that extends outward at a first axial end of a stator core from a radially innermost position inside slots; and a second terminal wire that extends outward at the first axial end of the stator core from a radially outermost position inside the slots, the first terminal wires are each led radially outward over coil ends of the stator winding, the second terminal wires are each led radially outward at positions that are nearer to the stator core than end portions of the first terminal wires that are led radially outward over the coil ends of the stator winding, and end portions of intraphase connecting second terminal wires are stacked in an axial direction with, placed in contact with, and connected to end portions of intraphase connecting first terminal wires that are subject to connection therewith.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: September 10, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masashi Nakamura, Kohei Egashira, Tatsuro Hino, Tetsuya Yokogawa, Shinkichi Sawa
  • Patent number: 10411635
    Abstract: A rotating electric machine includes a rotor and a stator. The stator includes a stator core and a stator coil. The stator coil includes three first windings, three second windings and three switch units. The first windings are ?-connected to define three nodes therebetween. The second windings are arranged so as to be respectively connectable between the nodes and three phase terminals of the stator coil. The switch units respectively switch the connections between the nodes and the phase terminals between a direct connection state and an indirect connection state. In the direct connection state, the nodes are respectively directly connected with the phase terminals. In the indirect connection state, the nodes are respectively connected with the phase terminals via the second windings. The first and second windings are mounted on the stator core so that the first windings are located closer than the second windings to the rotor.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: September 10, 2019
    Assignee: DENSO CORPORATION
    Inventor: Yuki Takahashi
  • Patent number: 10404125
    Abstract: A stator includes conductive wires wound around teeth, and slots between adjacent teeth in a circumferential direction. The conductive wires include conductive wires of three phases corresponding to a U-phase, a V-phase, and a W-phase, and the conductive wires are delta connected. Coils, in which any one of the conductive wires is wound around the teeth, are repeatedly disposed in order of the U-phase, the V-phase, and the W-phase in the circumferential direction. In each of the U-phase, the V-phase, and the W-phase, at least two coils are connected in series and adjacent in the circumferential direction. A direction in which the U-phase and W-phase conductive wires are wound around the teeth and a direction in which the V-phase conductive wire is wound around the tooth are opposite.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 3, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Yasuaki Nakahara, Takayuki Migita, Hisashi Fujihara, Tsuyoshi Nakamura
  • Patent number: 10348148
    Abstract: A stator includes an annular stator core and a multi-phase stator coil. The stator core has slots arranged in a circumferential direction thereof. The stator coil is comprised of phase windings that are mounted on the stator core so as to be received in the slots of the stator core. The stator coil has an annular coil end part protruding axially outward from an axial end face of the stator core. The stator coil includes, at least, two lead wires and a joint. Each of the lead wires is connected with one of the phase windings of the stator coil and led out from a radially inner periphery of the coil end part. At the joint, distal ends of the lead wires are joined to each other. Adjoining portions of the lead wires, which adjoin each other, are arranged radially inside a radially-inner peripheral surface of the coil end part.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventor: Toshihiro Takei
  • Patent number: 10340758
    Abstract: A permanent magnet motor has a number of permanent magnets forming permanent magnet poles. Each magnet has an outer surface that is an arc surface with a convex middle. An inner surface of the magnet is a curved surface with a concave middle. The curved surface has an arc surface section and two planar surface sections. The arc surface has a pole arc angle ? of 0.7 to 0.96, and the ratio of an arc angle ? of the arc surface section to the pole arc angle ? is 0.15 to 0.35. The shape of the inner surface of the magnet creates uneven air gaps between the rotor poles and the stator core poles. This reduces cogging torque, increases the motor efficiency, and reduces the motor noise.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 2, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Mao Xiong Jiang, Jian Zhao, Guo Wei Sun, Yong Li, Yong Wang, Hong Jiang Zhao, Yue Li
  • Patent number: 10340756
    Abstract: A rotating electric machine includes a stator core, a stator winding, and a rotor rotatably disposed via an air gap so as to be allowed to rotate relative to the stator core. A magnetic resistance-altering portion is provided on every other magnetic pole of magnetically-assisted salient pole members. A magnetic pole provided with the magnetic resistance-altering portion and a magnetic pole without the magnetic resistance-altering portion are alternately arranged.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: July 2, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano
  • Patent number: 10333365
    Abstract: An end winding support segment for a generator rotor includes a support segment body with a curved inner surface configured to be adjacent to a rotor shaft, a winding support arm extending radially outward from the support segment body, and an orifice extending from the curved inner surface of the support to an exterior surface of the support adjacent the winding support arm with the orifice configured to transfer lubricant from a surface of the rotor shaft to a winding located on the winding support arm.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: June 25, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Dhaval Patel, Glenn W. Hufstedler, Ted A. Martin, Eric A. Brust, Shaun Maconaghy, Kevin J. Koester, Doren C. Smith, Alan D. Hanson, William D. Sherman
  • Patent number: 10320220
    Abstract: A powertrain for a vehicle includes an electric machine and a controller. The electric machine has electrically isolated windings and is coupled with an inverter. The controller may be programmed to configure respective terminals of the windings to form a Y-connection, and responsive to an electrical connection between the vehicle and a 3-phase power grid, reconfigure the respective terminals such that each is coupled to a respective phase of the 3-phase power grid.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: June 11, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Baoming Ge, Lihua Chen, Shuitao Yang, Yan Zhou, Fan Xu, Mohammed Khorshed Alam
  • Patent number: 10312777
    Abstract: A method for welding a plurality of wire segment pairs is disclosed. Each wire segment pair has two adjacent wire segments, and each adjacent wire segment has a contact region where the wire segment is to be welded to the respective other wire segment. The wire segment pairs are successively guided between two elements of a pressing unit, and at a weld moment in which at least one of the wire segment pairs is located between the two elements. The pressing unit exerts a pressing force onto the wire segment pair such that the contact regions of the wire segments are pressed against each other. At each weld moment, laser radiation is irradiated onto the wire segment pair to which the pressing unit is exerting the pressing force, and the laser radiation is irradiated onto a region in which the contact regions are pressed against each other.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: June 4, 2019
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Holger Fröhlich, Ricus Müller
  • Patent number: 10291087
    Abstract: An electric motor has a wound stator and an outer rotor. A core of the stator has outer and inner annular portions. Tooth portions extend radially outwardly from the outer annular portion. Connecting arms interconnect the outer and inner annular portions. The width of the connecting arms is less than the width of the tooth portions. The ratio of tooth height L1 to distance between the roots of adjacent teeth L3 is in the range of 1.0 and 1.3. The ratio of tooth width T3 to L3 is in the range of 0.8 and 1.0. The ratio of tooth length T1 to L3 is in the range of 0.5 and 0.6. The ratio of T3 to outer diameter of the stator core D is in the range of 0.07 and 0.1.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: May 14, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Mao Xiong Jiang, Jian Zhao, Guo Wei Sun, Yong Li, Yong Wang, Hong Jiang Zhao, Yue Li
  • Patent number: 10284036
    Abstract: An electric machine is provided that has a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles. The rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles. The multiple barrier layers are positioned adjacent one another between an inner periphery of the rotor core and an outer periphery of the rotor core and include a first barrier layer nearest the inner periphery. Permanent magnets are disposed in at least the first barrier layer. A stator assembly surrounds the rotor assembly. The electric machine is configured to function as a motor in a motoring mode and as a generator in a generating mode. The electric machine is configured with predetermined operating parameters selected for optimizing operation in the motoring mode and/or the generating mode.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 7, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Lei Hao, Chandra S. Namuduri, Thomas W. Nehl
  • Patent number: 10277069
    Abstract: A wireless power transmitter includes a case including a base plate and a structure disposed on the base plate; and a transmitting coil having a three-dimensional spiral shape disposed on a side surface of the structure and configured to generate a magnetic field in a direction perpendicular to the side surface of the structure.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: April 30, 2019
    Assignee: Samsung EIectro-Mechanics Co., Ltd.
    Inventors: Ki Won Chang, Si Hyung Kim, Hee Sun Han, Ji Hoon Kim, Sung Uk Lee, Chang Mok Han, Duk Won Seo, Eun Young Shin, Hyun Keun Lim, Isaac Nam
  • Patent number: 10256690
    Abstract: The disclosure relates to printed circuit board motors and specifically to printed circuit boards used in motors and generators. Windings formed from copper on printed circuit boards have been used for purposes of forming antennas, inductors, transformers, and stators that can be incorporated in permanent magnet brushless DC (permanent magnet synchronous) machines. For energy conversion devices using modern permanent magnet materials and PCB stators, the magnetic field is not strongly confined by magnetically susceptible materials. Thus, the interaction between fields from adjacent turns in a winding, and/or windings on adjacent layers (for a multilayer configuration) may be significant. The structures disclosed hereinafter reduce the effective resistance in the windings, and therefore reduce the associated losses to achieve a reduced current density in portions of the rotating energy conversion devices.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: April 9, 2019
    Assignee: E-Circuit Motors, Inc.
    Inventor: Steven Robert Shaw
  • Patent number: 10250094
    Abstract: The present invention relates to a wound stator of an alternator, which comprises: a stator and a group of wires wound thereon. The group of wires comprises a plurality of abreast wires sequentially embedded in corresponding grooves of the stator, and the abreast wires in the grooves are oriented in a radial direction of the stator.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: April 2, 2019
    Assignee: Victory Industrial Corporation
    Inventors: Chun-Yuan Wang, Ming-Laang Liou
  • Patent number: 10250175
    Abstract: A field winding synchronous machine drive system includes a field winding synchronous machine having a stator and a rotor and a drive apparatus configured to drive the field winding synchronous machine. The stator has N m-phase stator coils wound on a stator core to create a rotating magnetic field, where N is an integer not less than 2 and m is an integer not less than 3. The rotor has at least one main field winding wound on a rotor core to create field magnetic flux. The drive apparatus includes N inverters each of which supplies m-phase alternating current to a corresponding one of the N m-phase stator coils. Specifically, each of the inverters supplies the corresponding m-phase stator coil with the m-phase alternating current which includes a fundamental-wave current and a time-harmonic current superimposed on the fundamental-wave current; the time-harmonic current has a shorter period than the fundamental-wave current.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: April 2, 2019
    Assignee: DENSO CORPORATION
    Inventor: Masahiro Seguchi
  • Patent number: 10243418
    Abstract: A three-phase alternating-current winding is configured by connecting first conductor terminals and second conductor terminals that are disposed in a circular arc-shaped region using connecting units, electric power supplying terminals of the three-phase alternating-current winding are constituted by the first conductor terminals and the second conductor terminals that are disposed in the circular arc-shaped region, a number of parallel phase windings in the three-phase alternating-current winding is n, where n is a natural number that is greater than or equal to one, an angular range of the circular arc-shaped region is less than or equal to (180×n) electrical degrees, and the second conductor terminals that constitute the electric power supplying terminals are positioned between adjacent first conductor terminals when viewed from a radially outer side.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: March 26, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masashi Nakamura, Kohei Egashira, Tatsuro Hino, Tetsuya Yokogawa, Shinkichi Sawa
  • Patent number: 10218240
    Abstract: The fitting of a stator (13) body (14) equipped with a winding (12) in an inner support surface (250) for a skirt (155) of a bearing (15) of a rotary electrical machine, such as an alternator or an alternator-starter of a motor vehicle, characterized in that the skirt (155) is heated locally by induction before fitting of the body (14) equipped with its winding (12) in the skirt (155). The invention also relates to a rotary electrical machine comprising a fitting of this type.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: February 26, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Matthieu Bonnici, Frederic Palleschi, Delphine Pentecote
  • Patent number: 10211694
    Abstract: A stator for a motor or generator including a planar composite structure (PCS) having at least one dielectric layer and a plurality of conductive layers is provided. The stator includes first conductive elements extending radially to a distance r1 from a center of, and disposed angularly on, the PCS. Each first conductive element includes a preferred termination structure to connect with at least one of a plurality of second conductive elements extending radially from a radius r2 from the center of, and disposed angularly on, the PCS.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: February 19, 2019
    Assignee: E-Circuit Motors, Inc.
    Inventor: Steven Robert Shaw
  • Patent number: 10184986
    Abstract: It is proposed a system for condition monitoring electric machine and the method thereof. The system includes a portable unit, being adapted for free movement around said electric machine; a magnetic field sensor, being adapted for measuring magnetic field intensity at at least one of a plurality points of a path of said free movement; a processing unit, being adapted for receiving at least one corresponding magnetic field intensity signal from said magnetic field sensor, comparing at least one magnetic field intensity value to at least one corresponding expected value, and determining, based on the comparison, if a fault is present in the electric machine; wherein: said magnetic field sensor and said processing unit are integrated into said portable unit.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: January 22, 2019
    Assignee: ABB Schweiz AG
    Inventors: Cajetan Pinto, Maciej Orman, Prasad Mulay