边界限定条件下的LLC-DCX优化设计  

Optimal Design of LLC-DCX With Boundary Limitations

作　　者：屠腾 张方华[1] 余文浩 束健军 黄恩泽 TU Teng;ZHANG Fanghua;YU Wenhao;SHU Jianjun;HUANG En’ze(Center for More-electric-aircraft Power System(Nanjing University of Aeronautics and Astronautics),Nanjing 210016,Jiangsu Province,China)

机构地区：[1]多电飞机电气系统工信部重点实验室(南京航空航天大学),江苏省南京市210016

出　　处：《中国电机工程学报》2023年第12期4748-4757,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51777094)。

摘　　要：论文针对小宽度、低高度的中间母线变换器,研究基于磁集成矩阵变压器的直流变压器(LLC-DCX),提出一种考虑电参数、磁性元件结构参数的优化设计方法。针对高度限制,通过低高度式的磁集成方案,有效抵消磁板中的高频磁通量,增加绕组线径;针对效率优化这一目标,详细分析变压器矩阵数、磁性元件结构参数等因素对整机效率的影响。最后,开发原型样机,额定360W输出,峰值效率97.6%,功率密度940W/inch3,验证设计方案的有效性。This paper proposes a comprehensive optimization design of electrical and magnetic element structural parameters for LLC-DCX,enabling the development of a small-width and low-height intermediate bus converter(IBC)with superior overall efficiency.To address the low height limitation,a low-height magnetic integration scheme is used to offset high-frequency magnetic flux in the magnetic plate and increase the winding wire diameter;to achieve optimal overall efficiency,the influence of factors such as the number of transformer matrices and magnetic components structural parameters,on overall efficiency is analyzed in detail,and the optimal solution is presented.Finally,a prototype with a rated output of 360W,peak efficiency of 97.6%,and power density of 940W/inch 3 is developed,confirming the rationality of the design scheme.

关 键 词：磁集成 边界限定 氮化镓器件 矩阵变压器 

分 类 号：TM46[电气工程—电器]