TY - GEN
T1 - Research on the Formation Principle and Suppression Method of Switch Spike Voltage in Reverse LLC Resonant Converter
AU - Hexi, Du
AU - Jinmeng, Wu
AU - Fangang, Meng
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - The bi-directional LLC resonant converter cannot realize the ZCS of the primary side when working in the reverse mode, which will generate a large spike voltage at both ends of the switch tube of the reverse primary side. Combined with the working mode of reverse LLC, this paper explains the causes of reverse spike voltage and oscillation in detail through time domain analysis, and improves the control method of reverse LLC resonant converter to make the resonant current participate in the resonance of the excitation inductor, so as to reduce the turn-off current and suppress the spike voltage and oscillation on both sides of the switch tube. Finally, the effectiveness of the synchronous rectification control strategy is verified by the simulation and experiment of 12V/125A1.5KW reverse LLC.
AB - The bi-directional LLC resonant converter cannot realize the ZCS of the primary side when working in the reverse mode, which will generate a large spike voltage at both ends of the switch tube of the reverse primary side. Combined with the working mode of reverse LLC, this paper explains the causes of reverse spike voltage and oscillation in detail through time domain analysis, and improves the control method of reverse LLC resonant converter to make the resonant current participate in the resonance of the excitation inductor, so as to reduce the turn-off current and suppress the spike voltage and oscillation on both sides of the switch tube. Finally, the effectiveness of the synchronous rectification control strategy is verified by the simulation and experiment of 12V/125A1.5KW reverse LLC.
KW - Reverse LLC resonant circuit
KW - parasitic parameters
KW - soft switching
KW - spike voltage
UR - https://www.scopus.com/pages/publications/85152028464
U2 - 10.1109/APET56294.2022.10073058
DO - 10.1109/APET56294.2022.10073058
M3 - 会议稿件
AN - SCOPUS:85152028464
T3 - 2022 Asia Power and Electrical Technology Conference, APET 2022
SP - 127
EP - 131
BT - 2022 Asia Power and Electrical Technology Conference, APET 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 Asia Power and Electrical Technology Conference, APET 2022
Y2 - 11 November 2022 through 13 November 2022
ER -