摘要
第三代半导体碳化硅MOSFET具有高耐压、低导通以及开关频率高等优点,结合全桥LLC谐振变换器效率高、全范围软开关、损耗低等特点,两者在功率变换器中的应用越来越多。分析全桥LLC的工作原理和增益特性,结合MathCAD辅助计算,给出了一套全桥LLC谐振变换器的设计方法,并设计出一套20 kW基于碳化硅MOSFET的全桥LLC谐振电源,通过PSIM验证了设计的正确性。
The third-generation semiconductor silicon carbide MOSFET has the advantages of high withstand voltage,low conduction and high switching frequency,combined with the high efficiency of the full-bridge LLC resonant converter,full-range soft switching,and low loss.They are more and more used in power Convertters.Analyzing the working principle and gain characteristics of full-bridge LLC,combined with MathCAD-assisted calculation,a set of design methods of full-bridge LLC resonant converter is given,and a set of 20 kW full-bridge LLC resonant power supply based on silicon carbide MOSFET is designed.PSIM verifies the correctness of the design.
作者
吴文辉
孔铭
范自勇
李家宇
吴春欢
WU Wenhui;KONG Ming;FAN Ziyong;LI Jiayu;WU Chunhuan(EAST Group Co.,Ltd.,Dongguan 523808,China)
出处
《通信电源技术》
2021年第16期48-52,共5页
Telecom Power Technology
