Compact and efficient Maximum Power Point Tracking circuit for portable solar battery charger

IEICE Electronics Express

Chul-Mun Jung¹  Kyeong-Sik Min¹  Huan Minh Vo¹  Eun-Sub Lee¹ 

[1] School of Electrical Engineering, Kookmin University

关键词: photovoltaic;    solar energy;    battery charger;    Buck converter;    maximum power point tracking;   

DOI  :  10.1587/elex.8.930

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)Cited-By(2)In this paper, a new compact but efficient Maximum Power Point Tracking (MPPT) circuit is added to the conventional battery charger. The battery charging is composed of two steps of the Constant Current (CC) charging and Constant Voltage (CV) charging. Unlike the conventional CC charging, the new MPPT circuit can adjust the charging current according to the sunlight intensity to deliver the largest available solar energy to the battery. For the CV, the proposed battery charger can keep its charging voltage on the full charge level thus it does not lose the battery capacity due to the undercharging. The new battery charger can deliver more power to the battery than the charger without MPPT by 98.8%. Also, the charging time can be shortened by 52.3% with 10.5% of layout overhead.

【 授权许可】

Unknown