An Improved Perturb and Observe Maximum Power Point Tracking Algorithm for Photovoltaic Power Systems

作     者：Rasool Kahani Mohsin Jamil M.Tariq Iqbal Rasool Kahani;Mohsin Jamil;M.Tariq Iqbal

作者机构：Department of Electrical and Computer EngineeringMemorial University of NewfoundlandSt.John’sA1B 3X5Canada 

出 版 物：《Journal of Modern Power Systems and Clean Energy》 (现代电力系统与清洁能源学报（英文）)

年 卷 期：2023年第11卷第4期

页      面：1165-1175页

核心收录：

学科分类：08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：Photovoltaic system maximum power point tracking(MPPT) perturb and observe(P&O) boost converter steady-state performance 

摘      要：This paper aims to improve the performance of the conventional perturb and observe(P&O)maximum power point tracking(MPPT)*** the oscillation around the maximum power point(MPP)is the main disadvantage of this technique,we introduce a modified P&O algorithm to conquer this *** new algorithm recognizes approaching the peak of the photovoltaic(PV)array power curve and prevents the oscillation around the *** key to achieve this goal is testing the change of output power in each cycle and comparing it with the change in array terminal power of the previous *** a decrease in array terminal power is observed after an increase in the previous cycle or in the opposite direction,an increase in array terminal power is observed after a decrease in the previous cycle;it means we are at the peak of the power curve,so the duty cycle of the boost converter should remain the same as the previous ***,an optimized duty cycle is introduced,which is adjusted based on the operating point of PV ***,a DC-DC boost converter powered by a PV array simulator is used to test the proposed *** the irradiance changes,the proposed algorithm produces an averageηMPPT of nearly 3.1%greater than that of the conventional P&O algorithm and the incremental conductance(In C)*** addition,under strong partial shading conditions and drift avoidance tests,the proposed algorithm produces an averageηMPPT of nearly 9%and 8%greater than that of the conventional algorithms,respectively.