TY - JOUR
T1 - Building Common-Mode Analytical Model for Dual Active Bridge Incorporating with Different Modulation Strategies
AU - Yan, Yu
AU - Huang, Yang
AU - Chen, Ruirui
AU - Bai, Hua
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2021/11
Y1 - 2021/11
N2 - The modulation strategies of dual active bridge (DAB) including single phase-shift (SPS), dual phase-shift (DPS), and triple phase-shift (TPS) have been proposed to optimize the efficiency, eliminate the reactive power, and release the current stress. While the previous literature focuses on the accurate loss model in steady states or small-signal analysis for dynamic response, the common-mode (CM) model has been largely ignored. The main contribution of this article then is to propose an analytical CM model for DAB, which considers the CM parasitic capacitors including those of grounded heatsink and transformer windings. Based on such model, the CM performance is compared among different modulation strategies. The impact of two H-bridge on the input and output CM voltage has been addressed. A prototype based on SiC devices is used to verify the proposed analytical mode under SPS, DPS, and TPS. It is found that while TPS improves the light-load efficiency it introduces the worst CM noise. Influence of the ZVS current setting on the CM performance is also discussed.
AB - The modulation strategies of dual active bridge (DAB) including single phase-shift (SPS), dual phase-shift (DPS), and triple phase-shift (TPS) have been proposed to optimize the efficiency, eliminate the reactive power, and release the current stress. While the previous literature focuses on the accurate loss model in steady states or small-signal analysis for dynamic response, the common-mode (CM) model has been largely ignored. The main contribution of this article then is to propose an analytical CM model for DAB, which considers the CM parasitic capacitors including those of grounded heatsink and transformer windings. Based on such model, the CM performance is compared among different modulation strategies. The impact of two H-bridge on the input and output CM voltage has been addressed. A prototype based on SiC devices is used to verify the proposed analytical mode under SPS, DPS, and TPS. It is found that while TPS improves the light-load efficiency it introduces the worst CM noise. Influence of the ZVS current setting on the CM performance is also discussed.
KW - Common-mode voltage (CMV)
KW - dual active bridges (DABs)
KW - parasitic capacitance
KW - phase-shift control
KW - wide-bandgap device
KW - zero-voltage switching
UR - http://www.scopus.com/inward/record.url?scp=85103886339&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2021.3071440
DO - 10.1109/TPEL.2021.3071440
M3 - Article
AN - SCOPUS:85103886339
SN - 0885-8993
VL - 36
SP - 12608
EP - 12619
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 11
M1 - 9397338
ER -