TY - GEN
T1 - An Asymmetric Modulation Strategy for a Single-Phase Single-Stage AC-DC Converter
AU - Chen, Xingxing
AU - Mou, Di
AU - Liu, Junwei
AU - Song, Qingchao
AU - Wong, Chi Shing
AU - Loo, Ka Hong
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024/7
Y1 - 2024/7
N2 - Single-stage dual-active-bridge (DAB) ac-dc converter features higher power density and reliability compared to two-stage ac-dc conversion system. This paper presents an asymmetric modulation method for a single-stage ac-dc DAB converter. The modulation method proposed in this paper utilizes three degrees of control freedom with fixed switching frequency to minimize the peak-to-peak value of the transformer leakage inductor current over the full range of the fundamental ac-side voltage. The control variables can be calculated in real-time according to the optimization procedure. Compared to conventional one and two-degrees-of-freedom modulation methods, the proposed method can reduce the current stress of the switching devices and improve the efficiency of the power conversion system. Simulation results validate the effectiveness of the proposed method.
AB - Single-stage dual-active-bridge (DAB) ac-dc converter features higher power density and reliability compared to two-stage ac-dc conversion system. This paper presents an asymmetric modulation method for a single-stage ac-dc DAB converter. The modulation method proposed in this paper utilizes three degrees of control freedom with fixed switching frequency to minimize the peak-to-peak value of the transformer leakage inductor current over the full range of the fundamental ac-side voltage. The control variables can be calculated in real-time according to the optimization procedure. Compared to conventional one and two-degrees-of-freedom modulation methods, the proposed method can reduce the current stress of the switching devices and improve the efficiency of the power conversion system. Simulation results validate the effectiveness of the proposed method.
KW - asymmetric modulation
KW - Dual active bridge ac-dc converter
KW - phase-shift modulation
UR - http://www.scopus.com/inward/record.url?scp=85199057031&partnerID=8YFLogxK
U2 - 10.1109/IPEMC-ECCEAsia60879.2024.10567223
DO - 10.1109/IPEMC-ECCEAsia60879.2024.10567223
M3 - Conference article published in proceeding or book
AN - SCOPUS:85199057031
T3 - 2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
SP - 4304
EP - 4308
BT - 2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th IEEE International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia
Y2 - 17 May 2024 through 20 May 2024
ER -