基于GaN器件的磁集成LLC谐振变换器的优化设计  

Optimal Design of Magnetic Integrated LLC Resonant Converter Based on GaN Devices

作　　者：杨弋 戴瑜兴[1] 彭子舜 朱勇 YANG Yi;DAI Yuxing;PENG Zishun;ZHU Yong(College of Electrical and Electronic Engineering,Wenzhou University,Wenzhou,China 325035;Jingquanhua Technology Co.,Ltd.,Shenzhen,China 518000)

机构地区：[1]温州大学电气与电子工程学院,浙江温州325035 [2]深圳市京泉华科技股份有限公司,广东深圳518000

出　　处：《温州大学学报（自然科学版）》2024年第4期39-48,共10页Journal of Wenzhou University(Natural Science Edition)

摘　　要：为解决电动汽车辅助电源变换效率和功率密度相对较低的问题,提出一种基于改进磁集成变压器的LLC谐振变换器设计方案,修改了磁芯结构,在一个EEE磁芯上同时集成了谐振电感及变压器,减少了磁元件的重量和体积,优化了绕组排布及气隙结构,降低了磁芯饱和度和损耗,并结合GaN功率器件,最终搭建了一台150W的实验样机.实验结果表明,引入GaN器件及磁集成技术,可大幅提高变换器的功率密度和效率,从而验证了所提出设计方案的可行性.To address the problems of low efficiency and power density in the auxiliary power conversion of electric vehicles,this paper proposes a design scheme for an LLC resonant converter based on an improved magnetic integrated transformer.The magnetic core structure is modified to integrate the resonant inductor and transformer on an EEE magnetic core,reducing the weight and volume of the magnetic components.The winding arrangement and air gap structure are optimized to cut down magnetic core saturation and losses.Together with GaN power devices,a 150W experimental prototype is finally built.The experimental results show that the introduction of GaN devices and magnetic integration technology significantly improves the power density and efficiency of the converter,verifying the feasibility of the proposed design scheme.

关 键 词：LLC谐振变换器 GaN功率器件 磁集成 软开关 同步整流 

分 类 号：TM46[电气工程—电器]