TY - GEN
T1 - Power balancing control of a multilevel converter using high-frequency multi-winding transformer
AU - Gu, Chunyang
AU - Zheng, Zedong
AU - Li, Yongdong
AU - Ma, Hongwei
AU - Gao, Zhigang
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - A novel multilevel converter is proposed where a high-frequency multi-winding transformer is applied to realize the isolation and energy balance instead of the conventional phase-shifting transformer. In the proposed topology, all of the DC buses are connected to the same high-frequency multi-winding transformer through separated H-bridge units. Load powers can be equalized among different windings by the energy delivery using transformer flux. Furthermore, the equivalent circuit is proposed consist of the high-frequency voltage source and high-frequency multi-winding transformer. The power relations between these H-bridge cells are analyzed. Based on these relations, power exchange law among different transformer windings is obtained with high-frequency square wave inputs and outputs. Moreover, a control strategy for power balancing by adjusting the phase of input voltage on each H-bridge unit is proposed. Experimental results are given to validate the proposed strategy.
AB - A novel multilevel converter is proposed where a high-frequency multi-winding transformer is applied to realize the isolation and energy balance instead of the conventional phase-shifting transformer. In the proposed topology, all of the DC buses are connected to the same high-frequency multi-winding transformer through separated H-bridge units. Load powers can be equalized among different windings by the energy delivery using transformer flux. Furthermore, the equivalent circuit is proposed consist of the high-frequency voltage source and high-frequency multi-winding transformer. The power relations between these H-bridge cells are analyzed. Based on these relations, power exchange law among different transformer windings is obtained with high-frequency square wave inputs and outputs. Moreover, a control strategy for power balancing by adjusting the phase of input voltage on each H-bridge unit is proposed. Experimental results are given to validate the proposed strategy.
KW - H-bridge converter
KW - high-frequency multi-winding transformer
KW - multilevel converter
KW - power balance
UR - http://www.scopus.com/inward/record.url?scp=84866786543&partnerID=8YFLogxK
U2 - 10.1109/IPEMC.2012.6259122
DO - 10.1109/IPEMC.2012.6259122
M3 - Conference contribution
AN - SCOPUS:84866786543
SN - 9781457720864
T3 - Conference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
SP - 1866
EP - 1870
BT - Conference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
T2 - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012
Y2 - 2 June 2012 through 5 June 2012
ER -