Research on Maximum Power Point Tracking in Redundant Load Mode for Photovoltaic System  

作　　者：王建军 陈善本 邵宇丰 

机构地区：[1]College of Engineering, Shanghai Second Polytechnic University [2]School of Materials Science and Engineering, Shanghai Jiaotong University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2016年第3期257-262,共6页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(No.61107064);the Leading Academic Discipline Project of Communication and Information System(No.XXKZD1605)

摘　　要：In order to ensure that the photovoltaic(PV) array always works at the global maximum point of power to increase the system's overall efficiency, this paper leads the study on maximum power point tracking(MPPT) in redundant load mode. A new control system is designed by combining the redundant electronic load module, embedded controller, supportive capacitor and boost circuit. The system adjusts duty ratio of boost circuit dynamically based on the maximum power point parameter provided by redundant load unit in order to realize MPPT. An experiment shows that no matter whether system is under an even illumination or partly perturbed by shadow, this method can find the exact maximum power point.In order to ensure that the photovoltaic（PV） array always works at the global maximum point of power to increase the system＇s overall efficiency, this paper leads the study on maximum power point tracking（MPPT） in redundant load mode. A new control system is designed by combining the redundant electronic load module, embedded controller, supportive capacitor and boost circuit. The system adjusts duty ratio of boost circuit dynamically based on the maximum power point parameter provided by redundant load unit in order to realize MPPT. An experiment shows that no matter whether system is under an even illumination or partly perturbed by shadow, this method can find the exact maximum power point.

关 键 词：photovoltaic(PV) array partial shadow redundant load maximum power point tracking(MPPT) control system 

分 类 号：TM615[电气工程—电力系统及自动化]