TY - GEN
T1 - Steady-State Modeling of a Matrix-Type AC-DC DAB Converter Considering AC-Side Capacitor Voltage Ripple
AU - Chen, Xingxing
AU - Liu, Junwei
AU - Loo, Ka Hong
AU - Mou, Di
AU - Song, Qingchao
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024/11
Y1 - 2024/11
N2 - The matrix-Type dual-Active-bridge (DAB) converter is attractive for single-stage ac-dc power conversion, known for its high efficiency and reliability. Unlike conventional dc-dc DAB converters, which typically feature large dc-side filter capacitance to maintain constant dc voltage throughout each switching cycle, the matrix-Type ac-dc converter employs small ac-side capacitance. This design achieves a high power factor and optimize both power density and cost. However, the small ac-side capacitance results in noticeable capacitor voltage ripple during the switching cycle, which cannot be ignored. This paper develops a time-domain steady-state model to accurately characterize the steady-state performance of the converter. It is revealed for the first time that the ac-side capacitor voltage ripple can substantially impact the performance of the converter, particularly by potentially compromising zero-voltage-switching (ZVS) operation, thereby reducing power conversion efficiency and worsening electromagnetic interference (EMI) issues. Both simulation and experimental results validate the theoretical analysis and the findings.
AB - The matrix-Type dual-Active-bridge (DAB) converter is attractive for single-stage ac-dc power conversion, known for its high efficiency and reliability. Unlike conventional dc-dc DAB converters, which typically feature large dc-side filter capacitance to maintain constant dc voltage throughout each switching cycle, the matrix-Type ac-dc converter employs small ac-side capacitance. This design achieves a high power factor and optimize both power density and cost. However, the small ac-side capacitance results in noticeable capacitor voltage ripple during the switching cycle, which cannot be ignored. This paper develops a time-domain steady-state model to accurately characterize the steady-state performance of the converter. It is revealed for the first time that the ac-side capacitor voltage ripple can substantially impact the performance of the converter, particularly by potentially compromising zero-voltage-switching (ZVS) operation, thereby reducing power conversion efficiency and worsening electromagnetic interference (EMI) issues. Both simulation and experimental results validate the theoretical analysis and the findings.
KW - ac-dc converter
KW - capacitor voltage ripple
KW - dual-Active-bridge (DAB)
KW - steady-state modeling
UR - http://www.scopus.com/inward/record.url?scp=85215511727&partnerID=8YFLogxK
U2 - 10.1109/ISESC63657.2024.10785390
DO - 10.1109/ISESC63657.2024.10785390
M3 - Conference article published in proceeding or book
AN - SCOPUS:85215511727
T3 - CPSS and ISESC 2024 - 2024 CPSS and IEEE International Symposium on Energy Storage and Conversion
SP - 114
EP - 119
BT - CPSS and ISESC 2024 - 2024 CPSS and IEEE International Symposium on Energy Storage and Conversion
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 CPSS and IEEE International Symposium on Energy Storage and Conversion, CPSS and ISESC 2024
Y2 - 8 November 2024 through 11 November 2024
ER -
