高频平面变压器绕组损耗分析及参数优化设计  

Analysis of Winding Loss and Optimization Design of Parameters for High-frequency Planar Transformer

作　　者：徐祯祥[1] 徐秀华 王令岩 张益齐 赵絮 XU Zhenxiang;XU Xiuhua;WANG Lingyan;ZHANG Yiqi;ZHAO Xu(Beijing Research Institute of Precise Mechatronics and Controls,Beijing 100076,China)

机构地区：[1]北京精密机电控制设备研究所,北京100076

出　　处：《电源学报》2020年第4期178-185,共8页Journal of Power Supply

摘　　要：针对高频电源变换技术的需求,分析了高频工作条件下,铜箔绕组的交流阻抗、结构参数和绕制方式对平面变压器损耗的影响,研究了并联绕组结构的损耗特征及影响因素。根据研究和仿真分析结果,提出了高频工作条件下低损耗平面变压器绕组的几种结构优化设计方案,并进行了Maxwell 3D仿真对比分析。研制完成了高频平面变压器样机,最后进行了变压器的参数测试及分析和相应的电源变换模块带载试验,得到了效率最高、温升最低及变化最平稳的平面变压器绕组设计方案。结果表明,并联绕组交叉结构能够减小变压器高频损耗、降低温升和提高效率。Aimed at the requirement of the high-frequency power conversion technology,the influences of AC impedance,structural parameters,and winding mode of interleaving copper foils on the loss of a planar transformer are analyzed under high-frequency conditions,and the loss characteristics and influencing factors of the interleaving winding structure are studied.According to the analysis and simulation results,several structural optimization design schemes for low-loss planar transformer winding are put forward under high-frequency conditions,and simulations are compared and analyzed using Maxwell 3 D.In addition,a prototype of high-frequency planar transformer was completed.Finally,the transformer parameters were tested and analyzed,and an on-load experiment on the corresponding power conversion module was conducted,thereby obtaining a design scheme for planar transformer winding with the highest efficiency,lowest temperature rise,and most stable variations.Results show that the structure of interleaving winding can reduce the high-frequency loss and temperature rise of the transformer while improving its efficiency.

关 键 词：平面变压器 绕组损耗 交叉绕组 温升 

分 类 号：TM401[电气工程—电器]