几种光伏系统MPPT方法的分析比较及改进

Analysis,Comparison and Improvement of Several MPPT Methods for PV System

在光伏发电系统中需要对光伏电池的最大功率点进行跟踪。分析了4种常见的最大功率跟踪(Maximum Power Point Tracking,简称MPPT)方法,比较了其优缺点。针对MPPT启动过程中特性较差的问题,提出了一种改进启动特性的MPPT方法,并通过实验验证了该方法的有效性。

The photovohaic （PV） system must contain a Maximum Power Point Tracking （MPPT） function.This paper compares and analyzes four existing MPPT methods,points out the advantages and weaknesses of the methods. Contraposing the bad characters during the MPPT power on,this paper proposes a new MPPT method with improved power on character.The experimental result shows the validity of the method.