TY - GEN
T1 - A isolated bidirectional interleaved flyback converter for battery backup system application
AU - Chen, Shih Ming
AU - Liang, Tsorng-Juu
AU - Huang, Yong Hong
PY - 2013/9/9
Y1 - 2013/9/9
N2 - This paper proposes a novel isolated bidirectional converter, which can efficiently transfer energy between 400 V DC micro grid and 48 V DC batteries. The proposed structure includes primary windings of two flyback transformers, which are connected in series and sharing the high DC micro grid voltage equally, and secondary windings, which are connected in parallel to batteries. Few decoupling diodes are added into the proposed circuit on both sides, which can let the leakage inductance energy of flyback transformers be recycled easily and reduce the voltage stress as well as power losses during bidirectional power transfer. Therefore, low voltage rating and low conduction resistance switches can be selected to improve system efficiency. A laboratory prototype of the proposed converter with an input/output nominal voltage of 400 V / 48 V and the maximum capacity of 500 W is implemented. The highest power conversion efficiency is 93.1 % in step-down function, and near 93 % in step-up function.
AB - This paper proposes a novel isolated bidirectional converter, which can efficiently transfer energy between 400 V DC micro grid and 48 V DC batteries. The proposed structure includes primary windings of two flyback transformers, which are connected in series and sharing the high DC micro grid voltage equally, and secondary windings, which are connected in parallel to batteries. Few decoupling diodes are added into the proposed circuit on both sides, which can let the leakage inductance energy of flyback transformers be recycled easily and reduce the voltage stress as well as power losses during bidirectional power transfer. Therefore, low voltage rating and low conduction resistance switches can be selected to improve system efficiency. A laboratory prototype of the proposed converter with an input/output nominal voltage of 400 V / 48 V and the maximum capacity of 500 W is implemented. The highest power conversion efficiency is 93.1 % in step-down function, and near 93 % in step-up function.
UR - http://www.scopus.com/inward/record.url?scp=84883375655&partnerID=8YFLogxK
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U2 - 10.1109/ISCAS.2013.6572099
DO - 10.1109/ISCAS.2013.6572099
M3 - Conference contribution
AN - SCOPUS:84883375655
SN - 9781467357609
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1328
EP - 1331
BT - 2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
T2 - 2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
Y2 - 19 May 2013 through 23 May 2013
ER -