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Research on the method for control of three-phase unbalanced load based on variable frequency power

Authors :
Wei Na
Zhao Ergang
Li Yadong
Yu Mei
Li Chunming
Zhang Jianjun
Source :
Dianzi Jishu Yingyong, Vol 45, Iss 10, Pp 121-124 (2019)
Publication Year :
2019
Publisher :
National Computer System Engineering Research Institute of China, 2019.

Abstract

A method for control of three-phase unbalanced load based on variable frequency power was proposed in this paper. The general idea was introduced firstly, and then the implementation of the scheme and the design method of variable frequency power supply and the realization scheme of the master control center at the side of low-voltage distribution network was described in details. When three-phase unbalance occurs in the power grid, the general control center sends phase-changing instructions, and the inverter power supply receives instructions to perform phase-changing, and the normal work of the load is not affected in the phase-changing process, which can effectively solve the problem of three-phase unbalance in the power grid. By setting up the basic model of low-voltage side commutation with variable frequency power as the core, the rationality of the commutation process is simulated and analyzed by MATLAB, and finally the feasibility of three-phase unbalanced control scheme with frequency conversion power as the core is verified by experiments.

Details

Language :
Chinese
ISSN :
02587998
Volume :
45
Issue :
10
Database :
Directory of Open Access Journals
Journal :
Dianzi Jishu Yingyong
Publication Type :
Academic Journal
Accession number :
edsdoj.b715e1a29cc47028cb6c302b0ebe8e4
Document Type :
article
Full Text :
https://doi.org/10.16157/j.issn.0258-7998.190712