公开(公告)号：US20200317257A1

公开(公告)日：2020-10-08

申请号：US16835781

申请日：2020-03-31

Applicant: DENSO CORPORATION

Inventor： Hiroyasu OOTAKE ,  Nobuyori NAKAZIMA

IPC: B62D5/04 ,  H02P27/06

Abstract: A motor control device controls energization of a motor by interchangeably converting a direct current electric power of a power source and an alternating current electric power of the motor with a power conversion circuit according to a power running operation and a regeneration operation of the motor.A voltage instruction value calculation unit calculates a q-axis voltage instruction value and a d-axis voltage instruction value by feedback control of dq-axis currents. A voltage instruction value limit unit limits at least one of the q-axis voltage instruction value and the d-axis voltage instruction value. The voltage instruction value limit unit performs a q-axis voltage limit prioritize process for limiting the q-axis voltage instruction value over the d-axis voltage instruction value, or a d-axis voltage limit prioritize process for limiting the d-axis voltage instruction value over the q-axis voltage instruction value, during the regenerative operation of the motor.

公开(公告)号：US20210046974A1

公开(公告)日：2021-02-18

申请号：US16986624

申请日：2020-08-06

Applicant: DENSO CORPORATION

Inventor： Hiroyasu OOTAKE ,  Nobuyori NAKAZIMA ,  Kouichi NAKAMURA

IPC: B62D5/04 ,  H02P25/22 ,  H02P21/05 ,  H02P27/08

Abstract: Control circuits control inverter circuits provided in correspondence to the control circuits by a drive mode selected from a plurality of drive modes. A cooperative drive mode is for controlling a current supply to motor windings by a plurality of systems by using a value acquired from the other control circuit via communication. An independent drive mode is for controlling the current supply to the motor windings by the plurality of systems without using the value acquired from the other control circuit. A one-system drive mode is for controlling the current supply to the motor winding by one system without using the value acquired from the other control circuit. The control circuits set the drive mode to a cooperative drive mode when inter-computer communication is normal. The control circuits set the drive mode to an independent drive mode or a one-system drive mode thereby differentiating an output characteristic of a motor from that in the cooperative drive mode.

公开(公告)号：US20150012178A1

公开(公告)日：2015-01-08

申请号：US14306513

申请日：2014-06-17

Applicant: DENSO CORPORATION

Inventor： Hiroyasu OOTAKE ,  Daisuke KOBAYASHI

IPC: B62D5/04

CPC classification number: B62D5/0487 ,  B62D5/0481 ,  B62D5/049

Abstract: A rotary electric machine control apparatus controls driving of a motor, which generates assist torque in accordance with steering torque inputted by steering operation on a steering wheel. An abnormality detection part acquires a voltage detection value related to an operation parameter, which varies when the motor is being supplied with electric power. The abnormality detection part checks whether the voltage detection value is abnormal based on a variation of the voltage detection value over a predetermined period under a condition that the electric power is supplied to the motor and the steering member is being operated. It is thus possible to determine abnormality of the voltage detection value related to the operation parameter, which varies when the motor is in operation with electric power supply, without erroneous detection.

Abstract translation: 旋转电机控制装置控制电动机的驱动，该电动机根据在方向盘上的转向操作输入的转向转矩产生辅助转矩。 异常检测部获取与电动机供给电力时的操作参数相关的电压检测值，该操作参数发生变化。 异常检测部在电力供给到电动机并且转向构件正在运转的条件下，基于电压检测值在规定期间的变化来检查电压检测值是否异常。 因此，可以确定与电动机在电力供给中运转时的操作参数有关的电压检测值的异常，而不会错误地检测。