公开(公告)号：US20220399787A1

公开(公告)日：2022-12-15

申请号：US17891272

申请日：2022-08-19

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhengyi Tang ,  Xueyu Mei ,  Bayaer Eerhemu ,  Jinhua Chen

IPC: H02K11/028 ,  H02K11/33

Abstract: A drive motor and a retarder in a powertrain meet a condition that a harmonic order of the drive motor is the same as a quantity of gear teeth of an input shaft gear in the retarder such that a frequency of an electromagnetic noise harmonic generated by the drive motor is the same as a frequency of a noise harmonic generated by the retarder. When the drive motor and the retarder are coupled using a connection structure, a phase of the electromagnetic noise harmonic generated by the drive motor differs from a phase of the noise harmonic generated by the retarder by a set angle.