Title:
THREE-LEVEL INVERTER CONTROL METHOD AND PCS
Document Type and Number:
WIPO Patent Application WO/2023/024405
Kind Code:
A1
Abstract:
Provided are a three-level inverter control method and a PCS. The method comprises: obtaining a DC component of an inverter current of a first phase of an inverter and a DC component of an inverter current of a second phase of the inverter; determining a DC component of an inverter current of a third phase according to the DC component of the inverter current of the first phase and the DC component of the inverter current of the second phase; and controlling the inverter according to the DC component of the inverter current of the first phase, the DC component of the inverter current of the second phase, and the DC component of the inverter current of the third phase, respectively. The DC component of inverter current of the third phase is determined according to the DC components of the inverter currents of the two phases, and the whole inverter is adjusted on the basis of the relevance of the DC components of the three-phase inverter current, such that the adjusting precision is improved, and the problem of neutral point voltage imbalance of a bus is effectively improved.
Inventors:
LIN WEIMIN (CN)
CHEN HAISEN (CN)
HUANG KAILUN (CN)
JIAO BAOSHUAI (CN)
CHEN HAISEN (CN)
HUANG KAILUN (CN)
JIAO BAOSHUAI (CN)
Application Number:
PCT/CN2022/071064
Publication Date:
March 02, 2023
Filing Date:
January 10, 2022
Export Citation:
Assignee:
KEHUA DATA CO LTD (CN)
ZHANGZHOU KEHUA ELECTRIC TECH CO LTD (CN)
ZHANGZHOU KEHUA ELECTRIC TECH CO LTD (CN)
International Classes:
H02M7/483
Foreign References:
| CN101753044A | 2010-06-23 | |||
| CN113691151A | 2021-11-23 | |||
| CN104614582A | 2015-05-13 | |||
| JP2006033937A | 2006-02-02 | |||
| CN205453563U | 2016-08-10 | |||
| CN205051618U | 2016-02-24 |
Attorney, Agent or Firm:
HEBEI GUOWEIZHIYUAN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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