公开(公告)号：US20200162002A1

公开(公告)日：2020-05-21

申请号：US16739230

申请日：2020-01-10

Applicant: DENSO CORPORATION

Inventor： Makoto TANIGUCHI ,  Takumi INOUE ,  Kazushige OKUMOTO ,  Akira FUKUSHIMA

IPC: H02P21/30 ,  H02P21/22 ,  H02P25/22 ,  H02P27/12

Abstract: A rotating electric machine drive system includes: a rotating electric machine equipped with: a rotor having one magnetic pole configured by permanent magnets, and a salient pole portion that is magnetically convex in a radial direction; and a stator wound with a multiphase stator winding; an inverter for supplying electric power to the stator winding; and a control unit for controlling energization current of the inverters. The control unit performs energization control of the stator winding such that a fundamental wave current at a fundamental frequency synchronized with a rotational speed of the rotor, and a harmonic current that is triple the fundamental frequency flow in the stator winding, and such that energization of the harmonic current generates a stator magnetic field having a specified lead phase or delay phase with respect to a third-order magnetic field of the rotor.