基于LC滤波的光伏逆变器电感电流反馈控制策略研究
收稿日期: 2014-08-08
修回日期: 2014-11-05
网络出版日期: 2014-12-30
基金资助
国家自然科学基金（51206170）；
广东省自然科学基金（S201204007277）；
广州市重大科技专项（2010U1-D00231）；
院市合作项目（2012HY1006551）
Study on Inductor Current Feedback Control Strategy of Photovoltaic Grid-connected Inverter Based on LC Filter
Received date: 2014-08-08
Revised date: 2014-11-05
Online published: 2014-12-30
戴志威 , 舒 杰 , 吴昌宏 , 王 浩 , 宋香荣 , 张 伟 . 基于LC滤波的光伏逆变器电感电流反馈控制策略研究[J]. 新能源进展, 2014 , 2(6) : 449 -453 . DOI: 10.3969/j.issn.2095-560X.2014.06.007
According to the features of grid-connected photovoltaic (PV) inverter, an advancing reference current loop control strategy based on the inverter with inductor current feedback was proposed. By analyzing the structure of single-phase grid connected inverter, the vector relationship between voltage and current on LC filter was presented. Proportional regulation and proportional-resonant regulation with the gird voltage feed-forward decoupling controlling was adopted to study the relevance between reference current and output current. Theoretical analysis and experimental results based on a 3 kW inverter experimental platform show that the output current of the inverter can track the frequency and the phase of the grid voltage well, the power factor is unity, and the total harmonic distortion of output current is below 3%.
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