公开(公告)号：US20240380349A1

公开(公告)日：2024-11-14

申请号：US18652385

申请日：2024-05-01

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yankun Xu ,  Lifei Bai ,  Yihe Wang

IPC: H02P27/06 ,  H02J3/00

Abstract: In accordance with an embodiment, a motor controller includes a power supply control circuit, a safety state control circuit, and switching bridge arms. The power supply control circuit is configured to control a backup power supply to supply power to the safety state control circuit. The backup power supply includes a flyback conversion circuit. The power supply control circuit is configured to: in response to an output voltage of a main power supply being greater than or equal to a second preset voltage and a bus voltage being greater than a first preset voltage, control the flyback conversion circuit to stop operating.