基于低高度平面电感的GaN-Si混合型图腾柱无桥功率因数校正器  

Hybrid Totem-Pole Bridgeless Power Factor Corrector Converter with GaN HEMT and Si Diode Based on Low Profile Planar Inductor

作　　者：邹军 吴红飞[1] 刘越 葛子贤 杨柳[1] Zou Jun;Wu Hongfei;Liu Yue;Ge Zixian;Yang Liu(Center for More-Electric-Aircraft Power SystemNanjing University of Aeronautics and Astronautics,Nanjing 211106 China)

机构地区：[1]南京航空航天大学多电飞机电气系统工信部重点实验室,南京211106

出　　处：《电工技术学报》2021年第20期4265-4273,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51977105);江苏省自然科学基金(BK20200017);江苏省青蓝工程资助项目。

摘　　要：该文提出基于低高度平面电感的GaN-Si混合型图腾柱无桥功率因数校正器(PFC),利用工频Si二极管的慢恢复特性为高频GaN开关桥臂提供反向电流通路,实现临界电流导通模式无桥PFC和高频GaN开关桥臂的软开关运行。为了实现低高度和高功率密度,提出低高度平面电感结构及其优化设计方法,通过将临界电流导通模式下的电感电流进行分解,给出高频电感磁心和绕组损耗分析模型,并据此对电感结构尺寸进行优化设计。最后制作一台开关频率为200~700kHz、400W的实验样机,验证了所提出的解决方案的可行性和有效性。A GaN-Si hybrid totem-pole bridgeless PFC converter based on low profile planar inductor is presented in this paper.With the slow reverse recovery characteristics of the low frequency diode,a reverse current path is provided for high frequency GaN switching leg,so that the critical mode operation and the soft-switching can be achieved.In order to achieve lower height and higher power density,a low-profile planar inductor structure and an optimal design method are presented.The calculation method of inductor core loss and winding loss is presented by decomposing the inductor current in CRM mode,and the inductor dimension is optimized.Finally,a 200~700kHz,400W PFC converter prototype is built to verify the feasibility and effectiveness of the presented scheme.

关 键 词：图腾柱无桥功率因数校正器 氮化镓 平面电感 优化设计 

分 类 号：TM46[电气工程—电器]