Three-phase Photovoltaic Grid-connected Inverter Based on Feedforward Decoupling Control

被引：0

作者：

Huang, Tianfu ^{[1
]}

Shi, Xinchun ^{[1
]}

Sun, Yuwei ^{[1
]}

Wang, Dan ^{[1
]}

机构：

[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Baoding 071003, Hebei Province, Peoples R China

来源：

2013 INTERNATIONAL CONFERENCE ON MATERIALS FOR RENEWABLE ENERGY AND ENVIRONMENT (ICMREE), VOLS 1-3 | 2013年

关键词：

photovoltaic; grid-connected inverter; feed-forward decoupling; MPPT loop; DC voltage outer loop; AC current inner loop; FILTER; SYSTEMS;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Based on the analysis of operating principle of two-stage photovoltaic grid-connected inverter, the mathematical model of three-phase grid-connected inverter under dq synchronous rotating reference frame is set up, and the feed-forward decoupling control strategy of three-phase photovoltaic grid-connected inverter is deduced, and the overall control strategy of two-stage photovoltaic grid-connected inverter is proposed in this paper. The control strategy consists of MPPT(Maximum Power Point Tracking) loop, DC voltage outer loop, AC current inner loop. This control strategy not only realizes the decoupling control of active power and reactive power, but also has the characteristics of simple control and high control accuracy and so on. Finally, the control strategy proposed in this paper is applied in 5kW photovoltaic grid-connected inverter. The precision and effectiveness of this control strategy are verified by the experiments. The system is proved to be steady and dynamic.

引用

页码：476 / 480

页数：5

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