TY - GEN
T1 - A reconfigurable three-phase dual-active-bridge DC-DC converter designed for wide-range high-efficiency operation
AU - Khan, Akif Zia
AU - Loo, Ka Hong
PY - 2019/6/3
Y1 - 2019/6/3
N2 - All power converters, including dual-active-bridge (DAB) DC-DC converter, cannot sustain a consistently high-efficiency performance over a wide range of operating conditions, and reconfiguration of operation mode represents a viable solution to this fundamental problem. To meet this challenge, a resonant-type three-phase DAB (3p-DAB) converter incorporating a three-phase reconfigurable resonant network (3p-RRN) has been proposed in this paper. The proposed converter can operate either as a 3p-DAB resonant immittance converter (3p-DABRIC) or a 3p-DAB series resonant converter (3p-DABSRC) to enhance its efficiency performance over a wide range of voltage conversion ratio and output power levels. In addition, the proposed converter offers the flexibility to operate with unity power factor, full-range zero-voltage switching (ZVS) and enhanced light-load efficiency under varying operating conditions by appropriate selection of the converter's operation mode. Based on a careful loss analysis and verification of the loss model by experimental measurements, it has been found that under wide range variations in voltage conversion ratio and output power levels, 3p-DABSRC delivers a more superior efficiency performance at low to medium power levels, whereas 3p-DABRIC generally achieves a higher efficiency at high power levels, and thus combination of both operation modes leads to an overall wide range high-efficiency performance.
AB - All power converters, including dual-active-bridge (DAB) DC-DC converter, cannot sustain a consistently high-efficiency performance over a wide range of operating conditions, and reconfiguration of operation mode represents a viable solution to this fundamental problem. To meet this challenge, a resonant-type three-phase DAB (3p-DAB) converter incorporating a three-phase reconfigurable resonant network (3p-RRN) has been proposed in this paper. The proposed converter can operate either as a 3p-DAB resonant immittance converter (3p-DABRIC) or a 3p-DAB series resonant converter (3p-DABSRC) to enhance its efficiency performance over a wide range of voltage conversion ratio and output power levels. In addition, the proposed converter offers the flexibility to operate with unity power factor, full-range zero-voltage switching (ZVS) and enhanced light-load efficiency under varying operating conditions by appropriate selection of the converter's operation mode. Based on a careful loss analysis and verification of the loss model by experimental measurements, it has been found that under wide range variations in voltage conversion ratio and output power levels, 3p-DABSRC delivers a more superior efficiency performance at low to medium power levels, whereas 3p-DABRIC generally achieves a higher efficiency at high power levels, and thus combination of both operation modes leads to an overall wide range high-efficiency performance.
KW - DC-DC power conversion
KW - Immittance converters (ICs)
KW - Resonant power conversion
UR - http://www.scopus.com/inward/record.url?scp=85071945817&partnerID=8YFLogxK
U2 - 10.1109/PEDG.2019.8807776
DO - 10.1109/PEDG.2019.8807776
M3 - Conference article published in proceeding or book
AN - SCOPUS:85071945817
T3 - PEDG 2019 - 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems
SP - 147
EP - 154
BT - PEDG 2019 - 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2019
Y2 - 3 June 2019 through 6 June 2019
ER -