Modified Perturb and Observe (P&O) with checking algorithm under various solar irradiation

作     者：Alik, Rozana Jusoh, Awang 

作者机构：Univ Teknol Malaysia Fac Elect Engn Skudai 81310 Malaysia 

出 版 物：《SOLAR ENERGY》 (太阳能)

年 卷 期：2017年第148卷

页      面：128-139页

核心收录：

学科分类：0820[工学-石油与天然气工程] 080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：Ministry of Education of Malaysia (MOE) Universiti Teknologi Malaysia (UTM) [Q.J130000.2523.07H82] 

主　　题：Photovoltaic system Maximum power point tracker Perturb and Observe algorithm 

摘      要：This paper proposes a modified maximum power point tracking (MPPT) technique for photovoltaic (PV) system using an improved Perturb and Observe (P&O) with a checking algorithm. The main advantage of this method is its simplicity and accuracy of the algorithm such that it can even be computed accurately using a low cost microcontroller. The basic idea of this modified P&O is adding a checking algorithm into a modified MO MPPT. This checking algorithm functions to determine the global maximum power by comparing all existed peak points first, before the modified P&O algorithm takes place to identify the voltage at MPP (V-MPP), which is needed to calculate the duty cycle for the boost converter. A simulation using MATLAB/Simulink under partial shading condition has been done to test the effectiveness of the algorithm. The simulation results are satisfactory and show that the improved technique is able to track the PV maximum power during partial shading condition with 100% of tracking efficiency and produce zero ripple at the load side. (C) 2017 Elsevier Ltd. All rights reserved.