TY - GEN
T1 - Transient DC Bias Suppression with Rapid Power Reversing for EPS Whole Voltage Range in Dual Active Bridge DC-DC Converter
AU - Han, Xu
AU - Wen, Huiqing
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - During typical dynamic operations of a dual-active bridge (DAB) converter, such as start-up and power changes, a transient DC bias may emerge, potentially causing harm to its components, power supply facilities, and connected electrical loads. Traditionally, transient optimizations have mainly focused on unidirectional analysis, ignoring the inherent bidirectional power transmission and zero voltage switching (ZVS) capability of the DAB converter. This work proposes a novel DC bias suppression strategy based on a straightforward phase-shift optimization method for rapid power reversal, which is valid for achieving transient ZVS with a wide load range in the DAB converter. Conventional control schemes rely on the single-phase-shift (SPS) modulation method to reduce DC variation while ignoring the limitations of SPS control strategies, such as excessive backflow and a limited zero-voltage-switch range. Comprehensive experimental results indicate that DC deviation generated during the transient power reverse stage can be well eliminated with all switches achieving ZVS in all load conditions without any added snubbers.
AB - During typical dynamic operations of a dual-active bridge (DAB) converter, such as start-up and power changes, a transient DC bias may emerge, potentially causing harm to its components, power supply facilities, and connected electrical loads. Traditionally, transient optimizations have mainly focused on unidirectional analysis, ignoring the inherent bidirectional power transmission and zero voltage switching (ZVS) capability of the DAB converter. This work proposes a novel DC bias suppression strategy based on a straightforward phase-shift optimization method for rapid power reversal, which is valid for achieving transient ZVS with a wide load range in the DAB converter. Conventional control schemes rely on the single-phase-shift (SPS) modulation method to reduce DC variation while ignoring the limitations of SPS control strategies, such as excessive backflow and a limited zero-voltage-switch range. Comprehensive experimental results indicate that DC deviation generated during the transient power reverse stage can be well eliminated with all switches achieving ZVS in all load conditions without any added snubbers.
KW - DAB converter
KW - ZVS
KW - power reverse
KW - transient EPS modulation
UR - http://www.scopus.com/inward/record.url?scp=85164265275&partnerID=8YFLogxK
U2 - 10.1109/GlobConET56651.2023.10150042
DO - 10.1109/GlobConET56651.2023.10150042
M3 - Conference Proceeding
AN - SCOPUS:85164265275
T3 - 2023 IEEE IAS Global Conference on Emerging Technologies, GlobConET 2023
BT - 2023 IEEE IAS Global Conference on Emerging Technologies, GlobConET 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE IAS Global Conference on Emerging Technologies, GlobConET 2023
Y2 - 19 May 2023 through 21 May 2023
ER -