TY - GEN
T1 - Analysis of Multiple Phase-shift Control for Full-bridge CLLC Resonant Converter Based on Improved Fundamental Harmonic Approximation Method
AU - Zhu, Tianhua
AU - Zhuo, Fang
AU - Zhao, Fangzhou
AU - Song, Ruijie
AU - Wang, Feng
AU - Yi, Hao
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/9
Y1 - 2020/11/9
N2 - To solve the light-load problem of CLLC resonant converters, this paper proposes a comprehensive analysis of multiple phase-shift control based on improved fundamental harmonic approximation (FHA) method. A precise multi-harmonic approximated AC impedance model is firstly built to derive theanalytical relations between the output voltage gain and rms values of resonant currents of CLLC converters and three phase-shifts. Then, the influences of different phase-shifts on voltage gain andrms values of resonant currents are investigated with simulation verifications. Finally, an optimaldual phase-shift control achieving both effective voltage regulation and satisfying power efficiency is concluded and verified on a 18~25V/400V, 200W GaN based CLLC resonant converter prototype.
AB - To solve the light-load problem of CLLC resonant converters, this paper proposes a comprehensive analysis of multiple phase-shift control based on improved fundamental harmonic approximation (FHA) method. A precise multi-harmonic approximated AC impedance model is firstly built to derive theanalytical relations between the output voltage gain and rms values of resonant currents of CLLC converters and three phase-shifts. Then, the influences of different phase-shifts on voltage gain andrms values of resonant currents are investigated with simulation verifications. Finally, an optimaldual phase-shift control achieving both effective voltage regulation and satisfying power efficiency is concluded and verified on a 18~25V/400V, 200W GaN based CLLC resonant converter prototype.
KW - CLLC resonant converters
KW - dual phase-shift control
KW - improved FHA method
KW - light-load problem
KW - multi-harmonic approximated AC impedance model
KW - multiple phase-shift control
UR - https://www.scopus.com/pages/publications/85098580801
U2 - 10.1109/COMPEL49091.2020.9265763
DO - 10.1109/COMPEL49091.2020.9265763
M3 - 会议稿件
AN - SCOPUS:85098580801
T3 - 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
BT - 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020
Y2 - 9 November 2020 through 12 November 2020
ER -