公开(公告)号：US20230308050A1

公开(公告)日：2023-09-28

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 ,  H02S40/32 ,  H02M7/44

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

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.

公开(公告)号：US20240072784A1

公开(公告)日：2024-02-29

申请号：US18239871

申请日：2023-08-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jinxiang ZHAN ,  Ting YU

IPC: H03K17/04 ,  H03K17/567

CPC classification number: H03K17/0406 ,  H03K17/567 ,  H03K2217/0081

Abstract: A drive acceleration circuit, including: a drive power supply, including an output end and a reference signal end, where the output end output a drive signal, and the reference signal end is connected to a connection end of a switching device and output a reference signal to the connection end; a first signal route, where the first signal route is connected to the output end of the drive power supply and a control end of the switching device, and is configured to drive, based on the drive signal, the switching device to turn on/off; and a second signal route, connected in parallel with the first signal route, including a drive acceleration unit and a selective conduction unit, one end of the drive acceleration unit is connected to the drive power supply, another end of the drive acceleration unit is connected to the switching device through the selective conduction unit.