A New Resonant Control Strategy for Three-phase Grid Connected Inverter

被引：0
|
作者：
Ma W. [1 ]
Ouyang S. [1 ]
Yang L. [1 ]
机构：
[1] School of Electric Power, South China University of Technology, Guangzhou, 510640, Guangdong Province
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 08期
关键词：
Frequency adaptability; Resonant control; Three-phase grid-connected inverter;
D O I：
10.13335/j.1000-3673.pst.2018.2296
中图分类号：
学科分类号：
摘要：
To solve the problem that conventional proportional resonant (PR) controller used for grid-connected inverter cannot achieve zero steady-state error tracking control when grid frequency is shifted, a new resonant control method with frequency adaptive capacity is proposed in this paper. In a two-phase static coordinate system, the three-phase grid-connected inverter control system based on traditional quasi-PR controller is improved. With introduction of frequency tracking link and pre-current feedback link, the whole control system is equivalent to a first-order frequency servo system. The frequency adaptive dynamic response and steady-state control performance of the new resonant control strategy are analyzed, and the design method of key control parameters is given. Finally, effectiveness of the proposed scheme is proved with simulation and experiment. © 2019, Power System Technology Press. All right reserved.
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页码：2884 / 2891
页数：7
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