TY - JOUR
T1 - Comprehensive analysis and design of LLC resonant converter with magnetic control
AU - Wei, Yuqi
AU - Luo, Quanming
AU - Mantooth, Alan
N1 - Publisher Copyright:
© CPSS Transactions on Power Electronics and Applications 2019. All rights reserved.
PY - 2019/12
Y1 - 2019/12
N2 - Conventionally, LLC resonant converter adopts frequency control (FC) or combine FC with phase shift control (PSC) to regulate the output voltage. However, for both control strategies, a variable switching frequency operation range is required, which makes the magnetic component and driver circuit design complicated. In this paper, the magnetic control (MC) or variable inductor control is adopted for the LLC resonant converter. Thanks to MC, constant switching frequency and duty cycle can be implemented for the primary switches. A comprehensive analysis of the magnetically controlled LLC resonant converter is presented, which includes the operation principle, voltage gain, and soft switching operation. Meanwhile, a design methodology for LLC resonant converter with MC is proposed, especially the design considerations for the variable inductor are discussed. By adopting the proposed design methodology, the zero voltage switching (ZVS) operation for the primary switches and the zero current switching (ZCS) operation for the secondary rectifier can be achieved. Finally, a 200 W experimental setup is built to validate the theoretical analysis.
AB - Conventionally, LLC resonant converter adopts frequency control (FC) or combine FC with phase shift control (PSC) to regulate the output voltage. However, for both control strategies, a variable switching frequency operation range is required, which makes the magnetic component and driver circuit design complicated. In this paper, the magnetic control (MC) or variable inductor control is adopted for the LLC resonant converter. Thanks to MC, constant switching frequency and duty cycle can be implemented for the primary switches. A comprehensive analysis of the magnetically controlled LLC resonant converter is presented, which includes the operation principle, voltage gain, and soft switching operation. Meanwhile, a design methodology for LLC resonant converter with MC is proposed, especially the design considerations for the variable inductor are discussed. By adopting the proposed design methodology, the zero voltage switching (ZVS) operation for the primary switches and the zero current switching (ZCS) operation for the secondary rectifier can be achieved. Finally, a 200 W experimental setup is built to validate the theoretical analysis.
KW - Design methodology
KW - LLC resonant converter
KW - Magnetic control
KW - Soft switching
UR - https://www.scopus.com/pages/publications/85084850040
U2 - 10.24295/CPSSTPEA.2019.00025
DO - 10.24295/CPSSTPEA.2019.00025
M3 - 文章
AN - SCOPUS:85084850040
SN - 2475-742X
VL - 4
SP - 265
EP - 275
JO - CPSS Transactions on Power Electronics and Applications
JF - CPSS Transactions on Power Electronics and Applications
IS - 4
M1 - 8950935
ER -
