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1. WO2022110823 - PHOTOVOLTAIC AIR CONDITIONING POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD THEREFOR

Publication Number WO/2022/110823
Publication Date 02.06.2022
International Application No. PCT/CN2021/105752
International Filing Date 12.07.2021
IPC
H02J 3/38 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallelly feeding a single network by two or more generators, converters, or transformers
H02J 3/28 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
28Arrangements for balancing the load in a network by storage of energy
CPC
H02J 2300/24
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
2300Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
20The dispersed energy generation being of renewable origin
22The renewable source being solar energy
24of photovoltaic origin
H02J 3/28
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
28Arrangements for balancing of the load in a network by storage of energy
H02J 3/381
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
381Dispersed generators
H02J 3/388
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
388Islanding, i.e. disconnection of local power supply from the network
Y02E 70/30
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
70Other energy conversion or management systems reducing GHG emissions
30Systems combining energy storage with energy generation of non-fossil origin
Applicants
  • 珠海格力电器股份有限公司 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI [CN]/[CN]
Inventors
  • 崔铖浩 CUI, Chenghao
  • 黄猛 HUANG, Meng
  • 王京 WANG, Jing
  • 冯上贤 FENG, Shangxian
  • 肖尊辉 XIAO, Zunhui
  • 杨博 YANG, Bo
Agents
  • 中国贸促会专利商标事务所有限公司 CCPIT PATENT AND TRADEMARK LAW OFFICE
Priority Data
202011345789.625.11.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PHOTOVOLTAIC AIR CONDITIONING POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD THEREFOR
(FR) SYSTÈME D'ALIMENTATION ÉLECTRIQUE DE CLIMATISATION PHOTOVOLTAÏQUE ET PROCÉDÉ D'ALIMENTATION ÉLECTRIQUE S'Y RAPPORTANT
(ZH) 光伏空调供电系统及其供电方法
Abstract
(EN) 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.
(FR) La présente invention concerne un système d'alimentation électrique de climatisation photovoltaïque et un procédé de commande d'alimentation électrique s'y rapportant. Le système d'alimentation électrique de climatisation photovoltaïque comprend un climatiseur photovoltaïque, un système photovoltaïque, un système de stockage d'énergie et un convertisseur connecté à un réseau à courant alternatif, le conditionneur d'air photovoltaïque, le système photovoltaïque, le système de stockage d'énergie et le convertisseur étant montés sur un bus à courant continu ; lorsque le système d'alimentation électrique de climatisation photovoltaïque passe d'un mode connecté au réseau à un mode hors réseau, tout d'abord, on détermine si le système photovoltaïque fonctionne normalement ; si tel est le cas, le système photovoltaïque est démarré pour fournir une première tension pour alimenter électriquement le bus CC, maintenant la tension du bus inchangée, et sinon, le système de stockage d'énergie est démarré pour fournir une seconde tension pour alimenter électriquement le bus CC. La solution technique de la présente invention peut réaliser une commutation stable du système d'alimentation électrique de climatisation photovoltaïque entre un état hors réseau et un état connecté au réseau.
(ZH) 本公开提供了一种光伏空调供电系统及其供电方法,其中,光伏空调供电系统包括光伏空调、光伏系统、储能系统及与交流电网相连接的变流器,光伏空调、光伏系统、储能系统及变流器搭载于直流母线上,当光伏空调供电系统从并网模式切换到离网模式时,首先判断光伏系统是否正常工作,是则启动光伏系统提供第一电压给直流母线供电,维持母线电压不变,否则启动储能系统提供第二电压给直流母线供电。采用本公开的技术方案,可实现光伏空调供电系统离网并网状态的平稳切换。
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