低压大电流移相全桥变换器平面磁集成矩阵变压器的优化设计  

Optimum Design of Planar Magnetic Integrated Matrix Transformer for Low-Voltage High-Current Phase-Shifted Full-Bridge Converters

作　　者：王树鹏 陈乾宏[1] 韩良琪 WANG SHUPENG;CHEN QIANHONG(School of Automation,Nanjing University of Aeronautics and Astronautics,Nanjing 210016)

机构地区：[1]南京航空航天大学自动化学院,南京210016

出　　处：《磁性元件与电源》2024年第5期162-167,173,共7页Components and Power

摘　　要：针对低压大电流输出的场合,为了降低器件的导通损耗和热应力,原边绕组串联,副边绕组并联的磁集成矩阵变压器被广泛应用。本文针对原副边均为低压大电流的移相全桥变换器,给出了一种原边绕组和副边绕组交错串并联的磁集成矩阵变压器结构,阐述其基本原理和能够同时实现原副边均流的优势,并进行了具体设计。同时,本文在Maxwell中搭建了仿真模型,并对磁芯形状和绕组布局进行了优化设计。最后,本文搭建了一台1.35kW的样机,对理论论证和设计进行了验证。For the application of low voltage and high current output,in order to reduce the conduction loss and thermal stress of the device,the magnetic integrated matrix transformer with the primary winding in series and the secondary winding in parallel is widely used.Aiming at the phase-shifted full-bridge converter whose primary and secondary sides are both low-voltage and high-current,this paper presents a magnetic integrated matrix transformer structure in which the primary and secondary windings are alternated in series and parallel.The advantages of side current sharing,and a specific design is carried out.At the same time,this paper builds a simulation model in Maxwell,and optimizes the shape of the magnetic core and the layout of the windings.Finally,this paper builds a 1.45kw prototype to verify the theoretical demonstration and design.

关 键 词：低压大电流 矩阵变压器 磁集成 移相全桥 

分 类 号：TM4[电气工程—电器]