公开(公告)号：US20170310263A1

公开(公告)日：2017-10-26

申请号：US15136479

申请日：2016-04-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： CHANDRA S. NAMUDURI ,  LEI HAO

IPC: H02P25/18 ,  H02P25/22 ,  H02P25/022

CPC classification number: H02P25/188 ,  H02P25/022 ,  H02P25/22

Abstract: An electric drive system for a three-phase PM electric machine. The drive system includes a split stator winding for each phase of the machine including a first winding section and a second winding section, and an inverter circuit including a pair of inverter switches for each phase, where the pair of inverter switches for each phase is electrically coupled to the first and second winding sections for that phase in the stator. The drive system also includes a switching system including a switch circuit, where the switch circuit includes a plurality of switch assemblies for switching between a full winding control mode and a half winding control mode, where each switch assembly includes a first AC switching device and a second AC switching device, and where each switch assembly is electrically coupled to the pair of inverter switches and the first and second winding sections for a particular phase.

公开(公告)号：US20160352204A1

公开(公告)日：2016-12-01

申请号：US15231479

申请日：2016-08-08

Applicant: Johnson Electric S.A.

Inventor： Yue LI ,  Chui You ZHOU ,  Ming CHEN ,  Yong Gang ZHANG ,  Xiao Ning ZHU ,  Yong WANG ,  Yong LI ,  Chi Ping SUN ,  Bao Ting LIU ,  En Hui WANG ,  Fei XIN ,  Shing Hin YEUNG ,  Xiu Wen YANG ,  Li Sheng LIU ,  Yan Yun CUI ,  Shu Juan HUANG

IPC: H02K21/14 ,  H02K11/04 ,  H02K11/33 ,  H02P25/022 ,  H02K1/14 ,  H02K1/27

CPC classification number: H02K21/14 ,  H02K1/146 ,  H02K1/2706 ,  H02K2213/12 ,  H02P6/26 ,  H02P25/022 ,  H02P25/024

Abstract: A refrigeration apparatus includes a fan and a motor for driving the fan. The motor is a single phase synchronous alternating current motor. In comparison with the traditional motor, the single phase synchronous alternating current motor has a reduced size and reduced cost, while ensuring the stable performance.

Abstract translation: 制冷装置包括风扇和用于驱动风扇的电动机。 电动机是单相同步交流电动机。 与传统的电动机相比，单相同步交流电动机的尺寸减小，成本降低，同时保证了性能的稳定。

公开(公告)号：US20240388234A1

公开(公告)日：2024-11-21

申请号：US18691740

申请日：2021-11-11

Applicant: Mitsubishi Electric Corporation

Inventor： Akira FURUKAWA

IPC: H02P27/08 ,  H02P25/022

Abstract: To provide an AC rotary machine controller, a vehicle driving apparatus, and an electric power steering apparatus which can reduce the influence of the leakage current generated by the variation of the voltage of winding terminal of each phase by turning on and off the switching devices. An AC rotary machine controller executes, for each set, a flat-top two-phase modulation or a flat-bottom two-phase modulation; generates first comparison pulse wave and second comparison pulse wave; shifts one or both of paired the first comparison pulse wave and the second comparison pulse wave in an advance direction or a delay direction so that a rising timing of one of paired the first comparison pulse wave and the second comparison pulse wave coincides with a falling timing of the other.

公开(公告)号：US20240364252A1

公开(公告)日：2024-10-31

申请号：US18645638

申请日：2024-04-25

Applicant: ISUZU MOTORS LIMITED

Inventor： Futoshi YAMANE ,  Takuya KIKUCHI

IPC: H02P29/64 ,  H02P21/20 ,  H02P21/22 ,  H02P25/022

CPC classification number: H02P29/64 ,  H02P21/20 ,  H02P21/22 ,  H02P25/022

Abstract: A control apparatus for an electric motor that can improve ride comfort and operation stability is provided. The control apparatus includes: a rotor provided with one of a permanent magnet and a winding; and a stator provided with the other of the permanent magnet and the winding. The control apparatus includes a control part. When a temperature of the winding is lower than a predetermined temperature at activation of the electric motor, the control part controls a d-axis current to increase the temperature of the winding. When a rotation torque due to the d-axis current is generated at the rotor, the control part controls a q-axis current such that a rotation torque with the same magnitude as that of the rotation torque due to the d-axis current in a direction opposite to a direction of the rotation torque due to the d-axis current is generated at the rotor.

公开(公告)号：US20240356470A1

公开(公告)日：2024-10-24

申请号：US18683522

申请日：2022-03-03

Applicant: HITACHI ASTEMO, LTD.

Inventor： Shun TANIGUCHI ,  Noriya NAKAO ,  Kentaro MATSUO ,  Kazuaki TOBARI ,  Toshiyuki AJIMA

IPC: H02P21/20 ,  H02P21/14 ,  H02P25/022

CPC classification number: H02P21/20 ,  H02P21/141 ,  H02P25/022 ,  H02P2205/05

Abstract: A synchronous-motor control device includes a torque-command-value conversion unit for converting a torque command value for a synchronous motor into a second-torque command value which gradually increases in a region including a peak of a torque of the synchronous motor, a voltage-phase control unit for controlling a voltage phase angle such that the torque of the synchronous motor matches the second-torque command value, and a power conversion unit for converting DC power into AC power based on the voltage phase angle and a rotational angle of the synchronous motor, and for outputting the AC power resulted from the conversion to the synchronous motor.

公开(公告)号：US20240154561A1

公开(公告)日：2024-05-09

申请号：US18403021

申请日：2024-01-03

Applicant: DENSO CORPORATION

Inventor： Harumi HORIHATA ,  Yasuaki AOKI ,  Takahiro WATANABE

IPC: H02P27/08 ,  H02P25/022 ,  H02P101/45

CPC classification number: H02P27/08 ,  H02P25/022 ,  H02P2101/45

Abstract: An inverter control device is for a vehicle including: a rotating electric machine that is an in-wheel motor integrated inside a drive wheel and includes a rotor including a magnet portion with a plurality of magnetic poles and a stator including multiphase stator windings without teeth protruding radially toward the rotor; and an inverter electrically connected to the rotating electric machine. The inverter control device includes: a control unit configured to perform PWM control to generate a drive signal for a switching element in the inverter based on a carrier signal and a command voltage in each phase in the overall operating region for an operating point defined by the rotation speed and the torque of the rotating electric machine; and an operation unit configured to operate the switching element based on the generated drive signal.

公开(公告)号：US20240120860A1

公开(公告)日：2024-04-11

申请号：US18374459

申请日：2023-09-28

Applicant: Tula eTechnology, Inc.

Inventor： Paul Carvell ,  Md. Zakirul Islam

IPC: H02P6/28 ,  H02P6/32 ,  H02P25/022

CPC classification number: H02P6/28 ,  H02P6/32 ,  H02P25/022

Abstract: A method of controlling an electric machine having a separately excitable rotor and stator includes exciting the rotor and the stator at the same time to generate an optimal magnetic flux in the electric machine. The method includes maintaining the optimal magnetic flux by reducing a stator current as a rotor current rises. The method also includes providing a torque current to the stator as the rotor current rises such that the electric machine produces a demanded torque while the rotor current rises.

公开(公告)号：US20240097595A1

公开(公告)日：2024-03-21

申请号：US18460227

申请日：2023-09-01

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kentaro INOMATA ,  Akira YAMAZAKI ,  Takanori IWAKI ,  Joji EBISU ,  Shingo FUKUMARU

IPC: H02P27/08 ,  H02M7/483 ,  H02P25/022

CPC classification number: H02P27/08 ,  H02M7/483 ,  H02P25/022

Abstract: To provide a power conversion device that is effective for improving controllability of power in power conversion for multilevel voltage output. A power conversion device includes a switching circuit configured to supply a current to a motor by connecting and disconnecting a first point having a first potential, a second point having a second potential greater than the first potential, and a neutral point having a neutral potential between the first potential and the second potential to and from the motor, a neutral potential control unit configured to control the switching circuit in a manner to maintain the neutral potential within a target range, and a current control unit configured to increase a supply current to the motor without affecting a driving force generated by the motor at least when controlling the switching circuit 16 by the neutral potential control unit.

公开(公告)号：US11929696B2

公开(公告)日：2024-03-12

申请号：US17662363

申请日：2022-05-06

Applicant: Yu-Yu Chen

Inventor： Yu-Yu Chen

IPC: H02P25/022 ,  A63B21/22 ,  H02K7/02 ,  H02K21/04

CPC classification number: H02P25/022 ,  A63B21/225 ,  H02K7/025 ,  H02K21/04

Abstract: A driving and resistance control system for a permanent-magnet synchronous motor is disclosed. A control device includes a processing unit, a motor driving circuit, a resistance controller, and an interlock switch. In a first operation mode, the interlock switch makes the motor driving circuit and the permanent-magnet synchronous motor open-circuiting, and connecting stator windings of the permanent-magnet synchronous motor to the resistance controller, and under this condition, the external rotor of the permanent-magnet synchronous motor is rotated by spinning of a flywheel, so that the permanent-magnet synchronous motor is operating in a generator mode to generate a resisting force to the flywheel by mesas of a resistance generation device. In a second operation mode, the interlock switch makes the motor driving circuit and the permanent-magnet synchronous motor closed-circuiting and cutting off control of the resistance controller, and electrical energy is supplied from the power supply circuit to the permanent-magnet synchronous motor, so as to make the permanent-magnet synchronous motor operating in a motor mode to induce an acceleration on the external rotor.

公开(公告)号：US11848591B2

公开(公告)日：2023-12-19

申请号：US18026375

申请日：2021-09-15

Applicant: Yufei Zhu

Inventor： Yufei Zhu

IPC: H02K21/14 ,  H02P6/10 ,  H02K11/33 ,  H02K3/28 ,  H02P25/10 ,  H02K1/276 ,  H02K1/24 ,  H02P25/22 ,  H02P25/022

CPC classification number: H02K21/14 ,  H02K1/2766 ,  H02K3/28 ,  H02K11/33 ,  H02P6/10 ,  H02P25/022 ,  H02P25/107 ,  H02P25/22 ,  H02K1/246

Abstract: Systems, methods, and computer-readable media for driving polyphase motors are provided. A system is provided that may include an inverter with more than three phases, a stator with more than three phases, and a rotor with a number of poles. The geometry, construction, magnet flux distribution, and/or reluctance distribution can be varied between rotor poles. A method is provided that may control a system by selectively activating inverter half-bridges or other suitable inverter components, and energizing stator coils with different amplitude, which may result in non-repeating stator combined magnetic flux distribution, which may electromagnetically couple and produce torque on individual rotor poles, such as based on a pre-determined efficiency map.