公开(公告)号：US20170141716A1

公开(公告)日：2017-05-18

申请号：US15235605

申请日：2016-08-12

Applicant: DENSO CORPORATION

Inventor： Xuezhi HE ,  Masaki NISHIYAMA ,  Hirofumi YAMASHITA

IPC: H02P29/68 ,  H02P27/06 ,  H02P25/03

CPC classification number: H02P29/68 ,  H02P25/03 ,  H02P27/06 ,  H02P29/60

Abstract: A motor-generator control part controls driving of a motor-generator, which is a drive power source of a vehicle. A torque limitation part of the MG control part limits a torque of the motor-generator when an element temperature indicating a system temperature increases to be higher than a limitation starting temperature. The torque limitation part continues the torque limitation, which was performed when the element temperature was at a peak temperature, until a limitation continuation period elapses, when the element temperature changes from increasing to decreasing as a result of limiting the torque of the motor-generator. Thus torque variation is suppressed while also suppressing overheating of a motor-generator driving system.