公开(公告)号：US20250062619A1

公开(公告)日：2025-02-20

申请号：US18796732

申请日：2024-08-07

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Meiqing ZHANG ,  Mingxuan DONG ,  Ce FANG ,  Kai XIN

IPC: H02J3/32 ,  H02J3/38 ,  H02J7/00 ,  H02J7/06

Abstract: The embodiments include a power converter including a DC/AC conversion unit. A direct current bus is connected to the DC/AC conversion unit and a direct current source. The DC/AC conversion unit is further connected to a power grid. When a direct current bus voltage is less than or equal to a first voltage threshold, the power converter may switch to a current source mode to output first output power to the power grid, where the first output power is equal to an output power limit of the direct current source. Then, if a fluctuation amplitude of the direct current bus voltage is less than or equal to a first fluctuation threshold, the power converter may resume outputting second output power to the power grid in a voltage source mode, so that the second output power is less than or equal to the output power limit of the direct current source.