Research on a Fuzzy Variable-step P&O Method for Photovoltaic System
PING Aihong
LI Shaowu
Abstract：In order to improve the MPPT rapidity of photovoltaic (PV) system with easy implementation and low cost,a fuzzy variable-step P&O method is proposed on the basis of the conventional P&O meth-od. In this method,the difference between measured actual voltage and its value at the MPP is used as the input of the fuzzy controller and its output whose step is variable is used as the control signal of searching the MPP.Finally,some simulation experiments are conducted to verify that,with this proposed method,the better MPPT rapidity performance can be implemented regardless of the varying irradiance, temperature or load.
Keywords：photovoltaic systemMPPTfuzzy controlMPPP&O method
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 203-207 )