TY - GEN
T1 - Three Degree-of-freedom Optimization of High Efficiency High Power Density LLC Converter
AU - Gao, Qingyuan
AU - Yang, Xu
AU - Wei, Gaohao
AU - Wang, Kangping
AU - Chen, Qiaoliang
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Applications in the field of aviation power supply put forward higher requirements for efficiency and power density of power converters. LLC resonant converter has received extensive attention because it can realize soft switching. On the premise of ensuring the reliability of switching devices, improving the efficiency of LLC converter mainly depends on parameter optimization, thus it is necessary to accurately calculate the loss, especially for switching devices. Integrating the auxiliary power supply into the converter is beneficial to improve the power density of the module. Based on the Simplified Time Interval Analysis, this paper proposed a three degree-of-freedom parameter optimization method including inductance ratio, quality factor and dead time. A 270V/28V 800W power converter prototype is designed using the optimal results, which achieves 96.9% efficiency and 620W/inch3 power density with integrated auxiliary power supply.
AB - Applications in the field of aviation power supply put forward higher requirements for efficiency and power density of power converters. LLC resonant converter has received extensive attention because it can realize soft switching. On the premise of ensuring the reliability of switching devices, improving the efficiency of LLC converter mainly depends on parameter optimization, thus it is necessary to accurately calculate the loss, especially for switching devices. Integrating the auxiliary power supply into the converter is beneficial to improve the power density of the module. Based on the Simplified Time Interval Analysis, this paper proposed a three degree-of-freedom parameter optimization method including inductance ratio, quality factor and dead time. A 270V/28V 800W power converter prototype is designed using the optimal results, which achieves 96.9% efficiency and 620W/inch3 power density with integrated auxiliary power supply.
KW - LLC converter
KW - high efficiency
KW - high power density
KW - parameter optimization
UR - https://www.scopus.com/pages/publications/85143779203
U2 - 10.1109/PEAC56338.2022.9959512
DO - 10.1109/PEAC56338.2022.9959512
M3 - 会议稿件
AN - SCOPUS:85143779203
T3 - PEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings
SP - 474
EP - 478
BT - PEAC 2022 - 2022 IEEE International Power Electronics and Application Conference and Exposition, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd IEEE International Power Electronics and Application Conference and Exposition, PEAC 2022
Y2 - 4 November 2022 through 7 November 2022
ER -