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

doi:10.1007/s12204-016-1720-5

Abstract

Abstract: 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.

Key words: photovoltaic (PV) array| partial shadow| redundant load| maximum power point tracking (MPPT)|control system

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.

关键词: photovoltaic (PV) array| partial shadow| redundant load| maximum power point tracking (MPPT)|control system

CLC Number:

TM 615

WANG Jianjun1* (王建军), CHEN Shanben2 (陈善本), SHAO Yufeng1 (邵宇丰). Research on Maximum Power Point Tracking in Redundant Load Mode for Photovoltaic System[J]. Journal of shanghai Jiaotong University (Science), 2016, 21(3): 257-262.

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