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1. (WO2018161815) POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD

Pub. No.:    WO/2018/161815    International Application No.:    PCT/CN2018/077274
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Tue Feb 27 00:59:59 CET 2018
IPC: H02J 3/38
H02S 40/30
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: GAO, Yongbing
高拥兵
LI, Yanfeng
李彦锋
WANG, Xun
王勋
Title: POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD
Abstract:
The present application provides a power supply system and a power supply method. The power supply system comprises at least one cell panel string, at least one inverter, a transformer, and a voltage controller. An input of the at least one inverter is connected to an output of the at least one cell string. An output of the at least one inverter is connected to an input of the transformer. An output of the transformer is configured to output a supply voltage. The output of the at least one inverter is connected to an output of an inverter unit. The voltage controller further comprises a first sampling unit, a control unit connected to the first sampling unit, and the inverter unit connected to the first sampling unit. The voltage controller further comprises a second sampling unit and a DC converter connected to the second sampling unit. The power supply system performs compensation of the ground voltage of a voltage controller starting from 0 volts, resolving the issue in which an inverter is shut down or cannot operate normally due to a current surge generated at the moment the voltage controller grounds.