PHOTOVOLTAIC AIR CONDITIONING POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD THEREFOR

WIPO Patent Application WO/2022/110823

A1

Provided are a photovoltaic air conditioning power supply system and a power supply method therefor. The photovoltaic air conditioning power supply system comprises a photovoltaic air conditioner, a photovoltaic system, an energy storage system and a converter connected to an alternating current grid, wherein the photovoltaic air conditioner, the photovoltaic system, the energy storage system and the converter are mounted on a direct current bus, when the photovoltaic air conditioning power supply system is switched from a grid-connected mode to an off-grid mode, firstly, a determination is made as to whether the photovoltaic system works normally; if so, the photovoltaic system is started to provide a first voltage to supply power to the DC bus, maintaining the voltage of the bus unchanged, and otherwise, the energy storage system is started to provide a second voltage to supply power to the DC bus. The technical solution of the present disclosure can realize stable switching of the photovoltaic air conditioning power supply system between an off-grid state and a grid-connected state.

CUI CHENGHAO (CN)
HUANG MENG (CN)
WANG JING (CN)
FENG SHANGXIAN (CN)
XIAO ZUNHUI (CN)
YANG BO (CN)

PCT/CN2021/105752

June 02, 2022

July 12, 2021

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GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)

H02J3/38; H02J3/28

CN112467794A	2021-03-09
CN110336310A	2019-10-15
CN104501333A	2015-04-08
US20190052120A1	2019-02-14

CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)

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