Title :
A new two-switch flyback battery equalizer with low voltage stress on the switches
Author :
Kim, Hyoung-Suk ; Park, Ki-Bum ; Park, Sang-Hyun ; Moon, Gun-Woo ; Youn, Myung-Joong
Author_Institution :
Div. of Electr. Eng., KAIST, Daejeon, South Korea
Abstract :
In this paper, a new battery equalizer applying two-switch flyback topologies is proposed. Since the proposed circuit is based on two-switch flyback structure, voltage stress on the switches can be clamped at the battery stack voltage level. Furthermore, the number of active devices is minimized by using a common switch and a common clamping diode. The operational principle, theoretical analysis, design consideration, and implementation method are presented. In addition, to confirm the performance of the proposed battery equalizer, experimental results from four 3.9 V and 2600 mAh lithium-ion batteries are presented.
Keywords :
clamps; hybrid electric vehicles; secondary cells; switched mode power supplies; active devices; battery stack voltage level; common clamping diode; common switch; lithium-ion batteries; low voltage stress; two-switch flyback battery equalizer; two-switch flyback structure; Battery equalizer; hybrid electric vehicle (HEV); lithium-ion battery; two-switch flyback;
Conference_Titel :
Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-2893-9
Electronic_ISBN :
978-1-4244-2893-9
DOI :
10.1109/ECCE.2009.5316333
