光伏发电系统并网控制策略研究  

A Study of the Grid-connection Control Strategy for PV System

作　　者：阎昌国[1] 刘小雍[1] 李生红[1] 刘晓宇[1] YANG Chang-guo;LIU Xiao-yong;LI Sheng-hong;LIU Xiao-yu(School of Engineering and Technology, Zunyi Normal College, Zunyi 563006, China)

机构地区：[1]遵义师范学院工学院,贵州遵义563006

出　　处：《遵义师范学院学报》2017年第2期97-99,共3页Journal of Zunyi Normal University

基　　金：贵州省科技厅基金资助项目(黔科合LH字[2015]7054号;黔科合LH字[2015]7015号);贵州省教育厅青年基金资助项目(黔教合KY字[2016]254号);遵义师范学院博士基金资助项目(遵师BS(2015)04号)

摘　　要：逆变器是光伏发电系统的主要核心部件,其并网控制策略在改善系统整体性能、提高太阳能利用率等方面发挥着至关重要的作用。作者以单相全桥逆变器为研究对象,分析了并网控制的工作原理,研究了带与不带电网电压前馈的两种直接电流控制策略。理论分析与实验仿真结果证实,加入电网电压前馈不仅能提高系统的跟踪精度,还能改善系统并网电流的质量。As the core of PV(Photovoltaic)system,the grid-connection control strategy of inverter plays a vital role in improving overall systemperformance and the utilization rate of solar energy.Based on the single phase full bridge inverter in this paper,this paper analyzes the working principle of the grid-connection control,and studies two kinds of direct current control strategy that with and without the grid voltage feed-forward.Finally,the theoretical analysis and simulation experiments results show that the join grid voltage feed-forward control can effectively improve the tracking accuracy of systemand the quality of gird-connection current.

关 键 词：逆变器 光伏发电系统 控制策略 电压前馈 

分 类 号：TM46[电气工程—电器]