Title:
MODEL-PREDICTIVE VIRTUAL VOLTAGE VECTOR CONTROL-BASED METHOD FOR SUPPRESSING CIRCULATION OF INVERTER
Document Type and Number:
WIPO Patent Application WO/2021/114748
Kind Code:
A1
Abstract:
The present invention relates to a model-predictive virtual voltage vector control-based method for suppressing the zero-sequence circulation of a three-level NPC inverter: by means of analyzing the space vectors of a three-level inverter, selecting from thereamong seven voltage vectors the zero-sequence circulation contribution of which is zero as basic vectors, and by means of synthesizing same into 12 virtual voltage vectors, the zero-sequence circulation of a parallel system is effectively suppressed while also significantly reducing the distortion rate of output current thereof. The quality of grid-connected current is improved, and the method is very suitable for a three-level inverter system that operates parallelly.
Inventors:
JIN TAO (CN)
HUANG YUSHENG (CN)
ZHANG WEIFENG (CN)
HUANG YUSHENG (CN)
ZHANG WEIFENG (CN)
Application Number:
PCT/CN2020/113040
Publication Date:
June 17, 2021
Filing Date:
September 02, 2020
Export Citation:
Assignee:
UNIV FU ZHOU (CN)
International Classes:
H02M7/48
Foreign References:
| CN110912431A | 2020-03-24 | |||
| CN107171584A | 2017-09-15 | |||
| CN107546994A | 2018-01-05 | |||
| CN103036462A | 2013-04-10 | |||
| CN105375804A | 2016-03-02 | |||
| KR20180077700A | 2018-07-09 |
Attorney, Agent or Firm:
FUZHOU YUANCHUANG PATENT AND TRADEMARK AGENT LTD. (CN)
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