DocumentCode :
2133778
Title :
Charging multiple batteries using the boost-flyback converter
Author :
Graw, Jeff ; Zimmermann, Horst
Author_Institution :
Inst. of Electrodynamics, Vienna Univ. of Technol., Vienna, Austria
fYear :
2012
fDate :
9-12 Sept. 2012
Firstpage :
963
Lastpage :
967
Abstract :
A boost-flyback converter was investigated for its ability to charge separate battery stacks from a low-voltage high-current renewable energy source. A low voltage (12V) battery was connected in the boost configuration, and a high voltage (330V) battery stack was connected in the flyback configuration. This converter works extremely well for this application because it gives charging priority to the low voltage battery and dumps the reserve energy to the high voltage stack. As the low-voltage battery approaches full charge, more power is adaptively directed to the high-voltage stack, until finally the charging of the low voltage battery stops. A two-secondary flyback is also capable of this adaptive charging, but the boost-flyback does it with much higher conversion efficiency, and with a simpler (less expensive) transformer design.
Keywords :
power convertors; secondary cells; transformers; adaptive charging; boost-flyback converter; high voltage battery stack; low voltage battery; low-voltage high-current renewable energy source; multiple battery charging; transformer design; two-secondary flyback converter; voltage 12 V; voltage 330 V; Batteries; Capacitance; Clamps; Flyback transformers; Inductance; Schottky diodes; Windings;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conference and Exhibition (ENERGYCON), 2012 IEEE International
Conference_Location :
Florence
Print_ISBN :
978-1-4673-1453-4
Type :
conf
DOI :
10.1109/EnergyCon.2012.6348289
Filename :
6348289
Link To Document :
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