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A battery charger with maximum power point tracking function for low‐power photovoltaic system applications
Author(s) -
Chiu HuangJen,
Lo YuKang,
Lee TingPeng,
Chen Qing Su,
Yu Wen Long,
Lee JianXing,
Shih Frank,
Mou ShannChyi
Publication year - 2011
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.631
Subject(s) - battery charger , battery (electricity) , maximum power point tracking , photovoltaic system , miniaturization , power (physics) , electrical engineering , computer science , electronic engineering , maximum power principle , engineering , voltage , physics , quantum mechanics , inverter
A battery charger with MPPT function for low‐power PV system applications is presented in this study. For effective miniaturization, the battery charger is designed with high‐frequency operation. Some current‐sensing techniques are studied, and their MPPT implementation is compared. A battery charging method is also designed to prolong battery lifetime without the use of battery current sensors. The operation principles and design considerations of the proposed PV charger are analyzed and discussed in detail. A laboratory prototype is implemented and tested to verify the feasibility of the proposed scheme. Experimental results show that high MPPT accuracy and conversion efficiency can be simultaneously achieved under high‐frequency operation. Copyright © 2010 John Wiley & Sons, Ltd.