公开(公告)号：US20230208313A1

公开(公告)日：2023-06-29

申请号：US18147168

申请日：2022-12-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Congyuan WANG ,  Kai XIN ,  Zhangping SHAO

IPC: H02M7/483 ,  H02M1/00 ,  H02M1/084

CPC classification number: H02M7/483 ,  H02M1/0009 ,  H02M1/0845 ,  H02M1/0019

Abstract: A power conversion apparatus and a control method for a power conversion apparatus to reduce an amplitude of an output voltage of a converter when a grid is recovered from a fault, to ensure device safety. The power conversion apparatus includes a controller and a converter, and the controller is connected to the converter. The controller is configured to: after the output voltage of the converter is less than a first threshold, when the output voltage of the converter rises to be greater than a second threshold, reduce an active current output by the converter to a first current value, and reduce a reactive current output by the converter to a second current value, where the second threshold is greater than the first threshold.