单相光伏并网逆变器无差拍控制的研究与仿真

摘要

PV grid-connected inverter is the main component of photovoltaic power generation system, fast and effective control in order to achieve better efficiency of the output of a higher quality of electrici- ty,the inverter current is particularly critical.This paper briefly describes the current photovoltaic grid-connected inverter of several commonly used control method and its basic idea of grid-connected inverter,working principle and the principle of deadbeat control,given the pulse width of the inverter cal- culation and the reference current for MATLAB/Simulink software simulation results show that,deadbeat control in single-phase photovoltaic grid-connected inverter control in the dynamic response charac- teristics of a good,simple control grid current waveform.%光伏并网逆变器是光伏发电系统的主要部件，为了达到更好的效率输出更高质量的电能，对逆变器电流进行快速有效的控制尤为关键。该文简单介绍了当前光伏并网逆变器的几种常用控制方法及其基本思想，分析了并网逆变器的工作原理和无差拍控制方法的原理，给出了逆变器脉冲宽度的计算和参考电流的获取方法，通过MATLAB／Simulink软件仿真表明，无差拍控制在单相光伏并网逆变器控制中动态响应特性好，控制方便，电流跟踪电网电压波形好。