公开(公告)号：US12237783B1

公开(公告)日：2025-02-25

申请号：US18763985

申请日：2024-07-03

Applicant: Hua Yang

Inventor： Hua Yang

IPC: H02P21/14 ,  H02P21/00 ,  H02P21/22 ,  H02P25/022

Abstract: The present disclosure relates to a dead-time compensation method and apparatus for a permanent magnet synchronous motor (PMSM), a device, and a storage medium. The method includes: acquiring current sampling time d-axis currents and current sampling time q-axis currents corresponding to current sampling time three-phase stator currents of the PMSM; acquiring, according to vector angles of current sampling time three-phase current vectors, current sampling time filtered d-axis currents, and current sampling time filtered q-axis currents, included angles between the current sampling time three-phase current vectors and the d-axis, and acquiring current sampling time angles θ of the current sampling time three-phase current vectors; acquiring polarities of the current sampling time three-phase stator currents according to the current sampling time angles θ; and acquiring current sampling time compensation voltage values according to the polarities of the current sampling time three-phase stator currents.

公开(公告)号：US12107523B2

公开(公告)日：2024-10-01

申请号：US17840597

申请日：2022-06-14

Applicant: Zhejiang University City College

Inventor： Jing Li ,  Feifan Ji ,  Yuwei Chen

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

CPC classification number: H02P21/22 ,  H02P21/20 ,  H02P25/022 ,  H02P2207/05

Abstract: Disclosed is a method for searching a MTPA curve of a vehicle permanent magnet synchronous motor based on a DC power, which includes a current closed-loop adjuster, a current command generator, a current command angle generator, an active power calculator, an active power storage and comparison processor and a current given vector corrector. According to the present disclosure, the tedious manual calibration is relieved, the optimal angle is automatically searched, and the production efficiency is improved; according to the present disclosure, the step size can be arbitrarily set according to the calibration requirements, so as to achieve a higher calibration accuracy.

公开(公告)号：US12077143B2

公开(公告)日：2024-09-03

申请号：US17942028

申请日：2022-09-09

Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

Inventor： Nicholas Gizinski ,  Thomas J. Stutts

IPC: B60W10/08 ,  B60L15/20 ,  B60W10/20 ,  B62D5/04 ,  H02P25/022

CPC classification number: B60W10/08 ,  B60L15/20 ,  B60W10/20 ,  B62D5/0463 ,  H02P25/022 ,  B60L2220/14 ,  B60L2240/423 ,  B60L2240/429 ,  H02P2207/05

Abstract: A method includes calculating, for a motor, a voltage constraint and calculating, for the motor, a supply current constraint and a regenerative current constraint. The method also includes calculating, for the motor, a motor current constraint and determining, for the motor, a first operating torque based on the voltage constraint, the supply current constraint, and the motor current constraint. The method also includes at least one of selectively controlling the motor based on the first operating torque and generating information associated with the first operating torque.

公开(公告)号：US12015365B2

公开(公告)日：2024-06-18

申请号：US17637909

申请日：2020-08-25

Applicant: Moog Inc.

Inventor： Ray Opie ,  Denis O'Sullivan ,  Michael J. Willers

IPC: H02P29/028 ,  H02K5/04 ,  H02K11/225 ,  H02K11/26 ,  H02K11/33 ,  H02P25/022

CPC classification number: H02P29/028 ,  H02K5/04 ,  H02K11/225 ,  H02K11/26 ,  H02K11/33 ,  H02P25/022

Abstract: An electric motor assembly comprising a housing containing a secondary power source, a motor driver, an electric motor, power sensors to sense faults in a primary power supply and the secondary power source, primary and secondary winding sensors configured to sense faults in a primary winding and a secondary winding of the electric motor, the motor driver comprising a primary controller to control the primary winding in a normal operation mode and a secondary motor controller operatively configured to control at least one of the primary winding and/or the secondary winding in a secondary operation mode, the secondary motor controller configured to drive the motor to a safe position using the secondary winding in the event of a sensed fault in the primary winding and to drive the motor to the safe position using the secondary power source in the event of a sensed fault in the primary power source.

公开(公告)号：US20240056010A1

公开(公告)日：2024-02-15

申请号：US18449005

申请日：2023-08-14

Applicant: Danfoss (Tianjin) Ltd.

Inventor： Shizhong JI ,  Wanzhen LIU ,  Li YAO

IPC: H02P21/32 ,  H02P25/022

CPC classification number: H02P21/32 ,  H02P25/022 ,  H02P2207/05

Abstract: A method and apparatus for detecting an initial position of a rotor of a motor includes: switching on or off respective switches in respective connecting branches connected to respective phase windings of the motor so as to obtain different switch state combinations capable of supporting different phase states of the motor, wherein the different switch state combinations support inputting voltages for different phases to the motor; for each switch state combination, injecting a voltage and recording a start time; monitoring respective phase currents of the motor, including: stopping the injecting of the voltage in response to determining that at least one of the respective phase currents is greater than a current threshold during the injecting of the voltage; and recording an end time in response to determining that the respective phase currents are all attenuated to zero after stopping the injecting of the voltage; and calculating a time difference between the end time and the start time; and determining the initial position of the rotor based on respective time differences in different switch state combinations.

公开(公告)号：US20240022192A1

公开(公告)日：2024-01-18

申请号：US18254599

申请日：2021-11-12

Applicant: ORIENTAL MOTOR CO., LTD.

Inventor： Hikaru UMINO

IPC: H02P21/24 ,  H02P27/12 ,  H02P21/22 ,  H02P25/022

CPC classification number: H02P21/24 ,  H02P27/12 ,  H02P21/22 ,  H02P25/022

Abstract: An AC motor control device controls an inverter that supplies an alternating current to an AC motor which is a three-phase permanent magnet synchronous motor. The AC motor control device includes: pulse width modulation signal generation means that supplies a pulse width modulation signal to the inverter so that a position detection voltage vector for detection of the position of the rotor of the AC motor is applied to the AC motor; current derivative detection means that detects a current derivative occurring due to application of the position detection voltage vector to the AC motor; rotor position computation means that computes an estimated position of the rotor of the AC motor; rotor position correction means that corrects the estimated position; and drive control means that controls the pulse width modulation signal generation means so as to drive the AC motor.

公开(公告)号：US20230402870A1

公开(公告)日：2023-12-14

申请号：US17839691

申请日：2022-06-14

Applicant: GM Global Technology Operations LLC

Inventor： Mohamed Kamel ,  Muhammad Hussain Alvi ,  Alireza Fatemi ,  Chandra S. Namuduri ,  Rashmi Prasad

IPC: H02J7/14 ,  H02J7/00 ,  H02M1/00 ,  H02P25/022

CPC classification number: H02J7/1423 ,  H02J7/0063 ,  H02M1/0043 ,  H02P25/022

Abstract: A method and apparatus for electrical energy transfer between a pair of series connected batteries coupled between positive and negative DC rails of a power inverter operatively connected to a plurality of stator phase windings of a stator winding of a motor may include coupling a midpoint of the pair of series connected batteries to the stator winding of the motor, and controlling the power inverter to operate the power inverter and the stator winding as a switched-mode power converter to charge at least one of the stator phase windings from one of the pair of series connected batteries and to discharge the at least one of the stator phase windings to the other of the pair of series connected batteries.

公开(公告)号：US11824472B2

公开(公告)日：2023-11-21

申请号：US17481053

申请日：2021-09-21

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takayuki Miyajima ,  Takahiro Yokoyama ,  Tetsuo Nakata ,  Junpei Yamamoto

IPC: H02P23/28 ,  H02K9/19 ,  H02K21/02 ,  H02P25/022 ,  H02P27/06

CPC classification number: H02P23/28 ,  H02K9/19 ,  H02K21/02 ,  H02P25/022 ,  H02P27/06 ,  H02K2209/00

Abstract: A motor drive apparatus includes a motor, a power converter, and a controller that controls the voltage supplied to the motor by the power converter. The power converter converts a voltage of a 400 V-class AC power supply to a voltage with an effective value lower than an effective value of the 400 V-class AC power supply. The power converter converts the voltage by a switching operation of a plurality of switching elements. The motor is configured so that a value of φ×Vx/Ld is greater than Pmax when an effective value voltage Vx=200 V. A d-axis inductance of the motor is Ld. A flux linkage of the motor is φ. A maximum output of the motor in a device where the motor is mounted is Pmax. The controller has a control mode in which an effective value voltage higher than Vx is applied to the motor.

公开(公告)号：US11780416B2

公开(公告)日：2023-10-10

申请号：US16890916

申请日：2020-06-02

Applicant: HYUNDAI MOBIS CO., Ltd.

Inventor： Hong Joo Park

IPC: B62D5/04 ,  B60T8/171 ,  B60T8/172 ,  B60T13/16 ,  B60T13/74 ,  H02P21/00 ,  H02P25/022

CPC classification number: B60T8/171 ,  B60T8/172 ,  B60T13/166 ,  B60T13/745 ,  H02P21/00 ,  H02P25/022 ,  H02P6/182 ,  H02P6/182

Abstract: An apparatus and a method to detect an offset of a motor position sensor. The apparatus includes a command voltage vector generation unit configured to, in a state in which a motor has been coupled to an electric booster braking system, generate a command voltage vector having a predefined command phase and command voltage and apply the command voltage vector to the motor such that a piston moves in a direction determined based on the current position of the piston, and an offset detection unit configured to detect the offset of the motor position sensor based on a phase difference between a command phase of the command voltage vector and an actually measured phase obtained by actually measuring, by the motor position sensor, a phase formed by rotors of the motor that are aligned as the command voltage vector is applied from the command voltage vector generation unit to the motor.

公开(公告)号：US11750057B2

公开(公告)日：2023-09-05

申请号：US16839659

申请日：2020-04-03

Applicant: Toshiba International Corporation

Inventor： Goutham Selvaraj ,  Yao Duan ,  Yu Liu ,  Mark Rayner

IPC: H02K5/132 ,  F04C13/00 ,  F04B49/06 ,  F04D15/00 ,  H02P6/08 ,  H02P25/022 ,  E21B43/12

CPC classification number: H02K5/132 ,  E21B43/128 ,  F04B49/06 ,  F04C13/008 ,  F04D15/0066 ,  H02P6/08 ,  H02P25/022

Abstract: A method for controlling a permanent magnet (PM) synchronous motor in an ESP application is provided. A load angle of the PM motor is estimated. A voltage adjustment value is determined for the PM motor based at least on the estimated load angle of the PM motor. A voltage to be applied to the PM motor is determined based on the voltage adjustment value.