公开(公告)号：US11358476B2

公开(公告)日：2022-06-14

申请号：US15724520

申请日：2017-10-04

Applicant: DENSO CORPORATION

Inventor： Kiyotaka Matsubara ,  Kenji Yamada ,  Toshihiro Yamamoto

IPC: H02P21/04 ,  H02P6/14 ,  H02P6/15 ,  B60L15/20 ,  B60W20/10 ,  B60W20/40 ,  F02N11/08 ,  H02K7/116 ,  H02P6/28 ,  H02P6/04 ,  H02P27/08 ,  B60K6/445 ,  B60L15/00 ,  B60K6/26

Abstract: A drive device includes a motor, an inverter, an electric power storage device, and an electronic control unit. The electronic control unit is configured to generate a first pulse width modulation (PWM) signal of the switching elements by comparison of a voltage command of each phase according to a torque command of the motor and a carrier wave voltage, as a first PWM control. The electronic control unit is configured to generate a second PWM signal of the switching elements based on a modulation factor and a voltage phase of a voltage according to the torque command and a pulse count per unit cycle of an electric angle of the motor, as a second pulse width modulation control. The electronic control unit is configured to limit execution of the second PWM control when high controllability of the motor is requested rather than when the high controllability is not requested.

公开(公告)号：US10850636B2

公开(公告)日：2020-12-01

申请号：US15816411

申请日：2017-11-17

Applicant: DENSO CORPORATION

Inventor： Masashi Mizuno ,  Toshihiro Yamamoto ,  Kenji Yamada

IPC: B60L58/12 ,  B60W20/40 ,  B60W10/08 ,  B60W30/18 ,  B60W50/00 ,  B60W20/15 ,  B60L15/20 ,  B60L1/02 ,  B60L7/14 ,  B60L50/10 ,  B60W20/13 ,  B60L50/16 ,  B60W20/00 ,  B60K6/44 ,  B60K6/445 ,  H02M7/5395 ,  H02P27/08 ,  H02M1/32 ,  H02M1/00

Abstract: An electronic control unit is configured to generate a pulse width modulation signal of a plurality of switching elements based on a modulation factor and a voltage phase of a voltage based on a torque command of a motor and a pulse number per unit cycle of an electric angle of the motor and perform switching of the switching elements. The electronic control unit is configured to generate the pulse width modulation signal of the switching elements such that total loss of the motor and an inverter when a heat conversion request of drive electric power of the motor has been issued becomes greater than the total loss when the heat conversion request has not been issued.