TY - JOUR
T1 - A Single-Stage AC-DC Converter Based on Semi Dual-Active-Bridge With Decoupled Inductor Current Modulation Strategy
AU - Ma, Peisong
AU - Sha, Deshang
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2023/8/1
Y1 - 2023/8/1
N2 - In this article, a novel decoupled inductor current modulation strategy for a single-stage ac-dc converter based on a semi dual-active-bridge is proposed, which helps minimize the total harmonic distortion (THD) and improve the conversion efficiency. The transformer turns ratio is designed in an optimized manner for higher conversion efficiency. Only two control variables are used. And the converter could achieve a wider output voltage range and a high power factor without the mandatory current-tracking loop and look-up tables. In addition, comparisons of losses, THD, and backflow power between the decoupled inductor current and the optimal peak current modulation are presented. The power transfer capability, mode transition mechanism, soft-switching range, mode operation region, and parameter design are analyzed. The switches can achieve zero-voltage-switching within a wide operating range, and rectifier diodes can achieve zero-current-switching off in all operation situations. Besides, a 1-kW experimental prototype was built to verify the effectiveness of the proposed control strategy.
AB - In this article, a novel decoupled inductor current modulation strategy for a single-stage ac-dc converter based on a semi dual-active-bridge is proposed, which helps minimize the total harmonic distortion (THD) and improve the conversion efficiency. The transformer turns ratio is designed in an optimized manner for higher conversion efficiency. Only two control variables are used. And the converter could achieve a wider output voltage range and a high power factor without the mandatory current-tracking loop and look-up tables. In addition, comparisons of losses, THD, and backflow power between the decoupled inductor current and the optimal peak current modulation are presented. The power transfer capability, mode transition mechanism, soft-switching range, mode operation region, and parameter design are analyzed. The switches can achieve zero-voltage-switching within a wide operating range, and rectifier diodes can achieve zero-current-switching off in all operation situations. Besides, a 1-kW experimental prototype was built to verify the effectiveness of the proposed control strategy.
KW - Backflow power
KW - single-stage ac-dc converter
KW - total harmonic distortion (THD)
KW - wider output voltage range
UR - http://www.scopus.com/inward/record.url?scp=85161011793&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2023.3278725
DO - 10.1109/TPEL.2023.3278725
M3 - Article
AN - SCOPUS:85161011793
SN - 0885-8993
VL - 38
SP - 10170
EP - 10182
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 8
ER -