Title:
THREE-PHASE IMBALANCE OUTPUT CONTROL METHOD AND SYSTEM THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/221203
Kind Code:
A1
Abstract:
A three-phase imbalance output control method and a system therefor. The method comprises: by using the sum Pac of output powers of three phases, the sum Pexport of grid-connected port powers of the three phases, and a limit value PexprotLimit of the grid-connected port powers of the three phases, and adjusting the output powers, enabling the sum Pexport of the grid-connected port powers of the three phases to be 3 × PexprotLimit, and limiting the grid-connected port powers of two of the three phases to be PexprotLimit, so as to realize three-phase imbalance output. The system therefor comprises several photovoltaic modules, wherein an output side of each photovoltaic module is correspondingly connected to a DC/DC converter and a DC/AC converter; and the DC/AC converter is connected to a three-phase line terminal and a neutral wire terminal of a three-phase mains supply by means of four relays.
Inventors:
LIU CHAOHOU (CN)
AN TIANHONG (CN)
AN TIANHONG (CN)
Application Number:
PCT/CN2022/097822
Publication Date:
November 23, 2023
Filing Date:
June 09, 2022
Export Citation:
Assignee:
SOLAX POWER NETWORK TECH ZHEJIANG CO LTD (CN)
International Classes:
H02J3/26; H02J3/38
Foreign References:
| CN112909994A | 2021-06-04 | |||
| CN101877548A | 2010-11-03 | |||
| US20100052599A1 | 2010-03-04 |
Attorney, Agent or Firm:
HANGZHOU XINYUAN PATENT AGENCY (CN)
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