公开(公告)号：US11594942B2

公开(公告)日：2023-02-28

申请号：US16802908

申请日：2020-02-27

Applicant: DENSO CORPORATION

Inventor： Ryuji Omata ,  Hirofumi Kako ,  Kiyotaka Matsubara ,  Kazuhito Hayashi ,  Makoto Nakamura

IPC: H02K11/33 ,  H02K15/04 ,  H02P27/06

Abstract: A control apparatus is provided for controlling drive of a rotating electric machine that has coils of two or more phases. The control apparatus includes a first inverter to be connected with first ends of the coils, a second inverter to be connected with second ends of the coils, and a controller. The first inverter has a plurality of first switching elements each corresponding to one of the coils. The second inverter has a plurality of second switching elements each corresponding to one of the coils. The controller includes a first operation circuit configured to generate a first control signal for control of the first inverter and a second operation circuit configured to generate a second control signal for control of the second inverter. Moreover, the control apparatus is configured so that switching timings are synchronized, based on synchronization information, between the first and second inverters.

公开(公告)号：US10723233B2

公开(公告)日：2020-07-28

申请号：US16269835

申请日：2019-02-07

Applicant: DENSO CORPORATION

Inventor： Yoshihiro Shamoto ,  Kazuhito Hayashi ,  Hiroyuki Oyanagi

IPC: H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  B60L15/22 ,  H02P27/08 ,  B60L15/08 ,  H02P23/04 ,  B60L15/06 ,  H02P21/05 ,  H02P29/50

Abstract: A controller of an electrically powered vehicle includes an electronic control unit. The electronic control unit performs a switching control by a square wave control in a first switching mode when a rotation speed of the motor is equal to or higher than a first predetermined rotation speed. The electronic control unit performs the switching control by the square wave control in a second switching mode when the rotation speed of the motor is lower than the first predetermined rotation speed. The first predetermined rotation speed is a rotation speed lower than a first resonance region. The first switching mode is a mode of a switching pattern that suppresses LC resonance in the first resonance region. The second switching mode is a mode of a switching pattern that suppresses LC resonance in a second resonance region lower than the first predetermined rotation speed.