公开(公告)号：US20180083571A1

公开(公告)日：2018-03-22

申请号：US15822716

申请日：2017-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunyan XU ,  Yongbing GAO

IPC: H02S40/38 ,  H02J3/38 ,  G05F1/67 ,  H02S40/32

CPC classification number: H02S40/38 ,  G05F1/67 ,  H02J3/383 ,  H02J7/35 ,  H02M7/493 ,  H02M7/797 ,  H02M2001/123 ,  H02S40/30 ,  H02S40/32 ,  H02S50/00 ,  H02S50/10

Abstract: The present invention relates to the photoelectric field, and provides a power supply system and a power supply method, so as to reduce costs of a lead between a positive electrode or a negative electrode of a photovoltaic panel and a direct current voltage source. The power supply system includes: a photovoltaic panel string, an inverter connected to the photovoltaic panel string, and a transformer connected to the inverter. The power supply system further includes a voltage controller. The voltage controller includes a first terminal, a second terminal, and a third terminal. The voltage controller further includes: a first sampling unit, a control unit connected to the first sampling unit, and an inverter unit.