基于准PR控制的三相光伏并网逆变器研究  

The Control Strategy of Three-Phase Photovoltaic Grid-connected Inverters Based on Quasi-PR Control

作　　者：刘倩丽 龚力[1] 张小华[1] 

机构地区：[1]湖北工业大学电气与电子工程学院,湖北武汉430068

出　　处：《湖北工业大学学报》2015年第1期12-14,22,共4页Journal of Hubei University of Technology

摘　　要：在光伏发电并网过程中,为避免光伏发电系统的耦合影响电网质量,提出一种更为简单的三相并网逆变器的控制策略。利用MATLAB/SIMULINK建立在两相静止坐标系下三相并网逆变器的数学模型,采用外环为功率环,内环为电流环,选择准比例谐振(PR)控制器实现电网电流的控制,最后得到了三相并网逆变器的控制系统。通过仿真实验,验证了控制策略的可行性。In the process of PV Grid,in order not to affect the quality of power grid from the coupling of photovoltaic power generation systems,this paper proposed a simpler three-phase grid inverter control strategy.The mathematical model of three-phase grid inverter was built in the two-phase stationary coordinates using MATLAB/SIMULINK.Then we adopted the outer ring for the power and the inner for the current loop,and chose quasi proportional resonant（PR）controller to realize the grid current control.We finally obtained the three-phase grid inverter control system.Through the simulation experiment,the feasibility of this method was proved.

关 键 词：光伏并网 逆变器 准比例谐振(PR)控制器 SIMULINK建模 

分 类 号：TM434[电气工程—电器] TM914