TY - GEN
T1 - Wide-range ZVS asymmetric half-bridge converter with clamping switches for small DC offset current
AU - Moo-Hyun, Park
AU - Yeon, Cheol O.
AU - Park, Jin Sik
AU - Lim, Cheon Yong
AU - Han, Jung Kyu
AU - Moon, Gun Woo
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/13
Y1 - 2016/7/13
N2 - In this paper, a new wide range zero-voltage switching asymmetric half-bridge (AHB) converter with clamping switches for small DC offset current is proposed. Since the hold-up time requirement makes the conventional AHB converter operates asymmetrically in nominal state, a large DC offset current degrades the performance of AHB converters. In order to overcome this problem, the proposed AHB converter operates symmetrically in nominal state and two clamp switches that replace the clamp diodes, operate in hold-up state for additional gain. From the results, it can reduce the DC offset current of transformer and relieves the drawbacks that caused by asymmetric operation. In addition, a large external inductor of the proposed converter makes the wider zero-voltage switching (ZVS) range. Therefore, the proposed converter achieves the high overall efficiency and the smaller DC offset current than the conventional AHB converter. To verify these advantages of the proposed converter, the experiment was implemented with 340∼400V input voltage, 500W (12V/41.67A) output power system at 100 kHz.
AB - In this paper, a new wide range zero-voltage switching asymmetric half-bridge (AHB) converter with clamping switches for small DC offset current is proposed. Since the hold-up time requirement makes the conventional AHB converter operates asymmetrically in nominal state, a large DC offset current degrades the performance of AHB converters. In order to overcome this problem, the proposed AHB converter operates symmetrically in nominal state and two clamp switches that replace the clamp diodes, operate in hold-up state for additional gain. From the results, it can reduce the DC offset current of transformer and relieves the drawbacks that caused by asymmetric operation. In addition, a large external inductor of the proposed converter makes the wider zero-voltage switching (ZVS) range. Therefore, the proposed converter achieves the high overall efficiency and the smaller DC offset current than the conventional AHB converter. To verify these advantages of the proposed converter, the experiment was implemented with 340∼400V input voltage, 500W (12V/41.67A) output power system at 100 kHz.
KW - asymmetric half-bridge (AHB) converter
KW - Hold-up time
KW - zero-voltage-switching (ZVS)
UR - https://www.scopus.com/pages/publications/84983339978
U2 - 10.1109/IPEMC.2016.7512650
DO - 10.1109/IPEMC.2016.7512650
M3 - Conference paper
AN - SCOPUS:84983339978
T3 - 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
SP - 2262
EP - 2269
BT - 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
Y2 - 22 May 2016 through 26 May 2016
ER -