公开(公告)号：US12107538B2

公开(公告)日：2024-10-01

申请号：US18328902

申请日：2023-06-05

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ting Yu ,  Tiansan Lin ,  Jieling Tang

IPC: H02S40/36 ,  H02M7/44 ,  H02S40/32

CPC classification number: H02S40/36 ,  H02M7/44 ,  H02S40/32

Abstract: The photovoltaic system includes a first inverter circuit, a second inverter circuit, and a switch circuit. When the switch circuit is in the first state, a first photovoltaic array is connected to the direct current positive bus and the neutral bus through the switch circuit, and a second photovoltaic array is connected to the neutral bus and the direct current negative bus through the switch circuit. When the switch circuit is in the second state, the first photovoltaic array is connected to the neutral bus and the direct current negative bus through the switch circuit, and the second photovoltaic array is connected to the direct current positive bus and the neutral bus through the switch circuit. A potential of the photovoltaic array is changed to prevent a PID effect from occurring when the photovoltaic array is at a negative potential for a long time.