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    CURRENT DETECTION DEVICE, CURRENT DETECTION PROGRAM, AND CURRENT DETECTION METHOD
    2.
    发明公开
    CURRENT DETECTION DEVICE, CURRENT DETECTION PROGRAM, AND CURRENT DETECTION METHOD 审中-实审

    公开(公告)号：EP4391356A1

    公开(公告)日：2024-06-26

    申请号：EP22858437.1

    申请日：2022-08-12

    申请人： DENSO CORPORATION

    发明人： KOMIYA, Kazuki ,  AOKI, Yasuaki

    IPC分类号： H02P23/00 ,  H02P5/46 ,  H02P21/22

    CPC分类号： H02P23/00 ,  H02P21/22 ,  H02P5/46

    摘要： A current measurement apparatus (150, 250, 350, 450, 550) is applicable to a control apparatus for at least one multiphase rotary electric machine for measuring phase currents flowing through respective multiphase power lines used for power supply to the at least one multiphase rotary electric machine. The current measurement apparatus includes a measured current acquiring unit (111, 211, 311, 411, 511) that acquires, from a current sensor, a measured value of at least one target phase current flowing through a corresponding at least one target phase power line included in the multiphase power lines. The current measurement apparatus includes a corrector (114, 214, 314, 414, 514). The corrector calculates an error arising in the measured value of the at least one target phase current due to magnetic flux generated from each of the multiphase power lines in accordance with an error factor defined for each of the multiphase power lines with respect to the at least one target phase current. The error factor defined for each of the multiphase power lines with respect to the at least one target phase current is a constant value or a variable determined based on (i) one or more shields located between the current sensor and the corresponding one of the multiphase power lines and (ii) a distance between the current sensor and the corresponding one of the multiphase power lines. The corrector corrects the measured value of the at least one target phase current based on the calculated error.

    MOTOR FLYING START USING FIELD WEAKENING CONTROL
    4.
    发明公开
    MOTOR FLYING START USING FIELD WEAKENING CONTROL 审中-公开

    公开(公告)号：EP4387082A1

    公开(公告)日：2024-06-19

    申请号：EP23214242.2

    申请日：2023-12-05

    申请人： Rockwell Automation Technologies, Inc.

    发明人： Li, Bing

    IPC分类号： H02P21/00 ,  H02P21/18 ,  H02P21/22 ,  H02P21/26 ,  H02P21/34 ,  H02P1/02

    CPC分类号： H02P21/0089 ,  H02P21/22 ,  H02P21/18 ,  H02P21/26 ,  H02P21/34 ,  H02P1/029

    摘要： A method for flying start control of a motor, a computer readable medium, and a power conversion system having an inverter and a controller configured by computer executable instructions in a memory to perform flying start of a rotating motor by field weakening control to control the motor responsive to the motor speed exceeding the rated speed or other non-zero threshold at startup of the power conversion system. The method includes measuring a motor speed of a motor, responsive to startup of a power conversion system, and performing a flying start operation using field weakening control to control the motor responsive to the motor speed exceeding a non-zero threshold at startup of the power conversion system.

    Method and device for estimating power and/or current of inverter
    9.
    发明授权
    Method and device for estimating power and/or current of inverter 有权

    公开(公告)号：EP2897280B1

    公开(公告)日：2018-11-14

    申请号：EP14151422.4

    申请日：2014-01-16

    申请人： ABB Schweiz AG

    发明人： Heikkilä, Samuli

    IPC分类号： H02M7/487 ,  H02P27/14 ,  H02P21/00

    CPC分类号： G01R21/006 ,  G01R25/00 ,  H02M7/487 ,  H02P21/20 ,  H02P21/22

    摘要： The present disclosure describes a method and a device implementing the method for a three-level inverter comprising a DC link divided into two halves by a neutral point. The method comprises determining a voltage ripple at the neutral point, determining a magnitude of a third harmonic component of the voltage ripple in a rotating coordinate system that rotates synchronously with an output voltage of the inverter, and calculating a component of an output current or power in the rotating coordinate system on the basis of the magnitude of the third harmonic component.

    MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD
    10.
    发明授权
    MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD 有权

    公开(公告)号：EP2963807B1

    公开(公告)日：2018-10-31

    申请号：EP14756307.6

    申请日：2014-02-06

    申请人： NISSAN MOTOR CO., LTD.

    发明人： KATSUMATA, Yuji

    IPC分类号： H02P27/08 ,  B60L3/00 ,  B60L3/06 ,  B60L15/20 ,  H02P6/28 ,  H02P21/22 ,  H02P21/14 ,  B60L15/02

    CPC分类号： H02P21/141 ,  B60L3/0061 ,  B60L3/06 ,  B60L15/025 ,  B60L15/2072 ,  B60L2220/12 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/427 ,  B60L2240/429 ,  H02P6/28 ,  H02P21/22 ,  Y02T10/643 ,  Y02T10/72 ,  Y02T10/7275

    摘要： A motor control device is provided with: current command value calculating means which, based on a torque command value input from the outside and the rotation speed of a motor, calculates a basic current command value; first compensation means which compensates for delay in the rotor magnetic flux response of the motor (3) by amplifying the basic current command value; first current command value limiting means for restricting a post-compensation current command value by a first current limiting value; second compensation means which, based a current amplification command value calculated by the first compensation means and a first post-limitation current command value calculated by the first current value limiting means, calculates a compensation value for the amplified current command value; adding means which calculates the post-compensation current command value by adding the amplified current command value and the compensation value; and motor control means which, based on the first limited current command value, controls the motor (3), the second compensation means calculating, as the compensation value, a command value corresponding to a portion limited by the first current limiting value of the amplified current amplification command value.