基于镜像法的变压器空心管型绕组损耗计算  

Calculation of Transformer Hollow Tube Winding Loss Based on Image Method

作　　者：黄德明 陈为[1] 

机构地区：[1]福州大学电气工程与自动化学院,福州350108

出　　处：《磁性元件与电源》2024年第1期155-159,163,共6页Components and Power

摘　　要：随着变压器工作频率的提高,集肤效应和邻近效应引起的绕组涡流损耗也随之提高。将空心管型绕组应用于中频变压器,不但可以提高绕组材料利用率,同时能改善变压器的散热效率。通常计算绕组损耗的模型有Dowell模型和Bessel函数,但由于空心管型绕组形状特殊,无法用上述模型计算。为了解决这一问题,本文提出了一种基于无穷级数的空心管型绕组涡流损耗计算方法,通过镜像法移除变压器磁心对绕组磁场分布的影响,得到空心管型绕组变压器绕组涡流损耗的计算方法。通过理论分析计算和有限元模型的仿真比较,验证理论分析的可行性。With the increase of working frequency of transformer,the eddy current loss caused by skin effect and proximity effect also increases.The application of hollow tube winding in IF transformer can not only improve the utilization of winding material,but also improve the heat dissipation efficiency of transformer.Usually,Dowell model and Bessel function are used to calculate the winding loss,but because of the special shape of hollow tube winding,the above model can not be used to calculate the winding loss.In order to solve this problem,this paper presents a method of calculating the eddy current loss of the hollow tube winding based on infinite series.By removing the influence of the transformer core on the distribution of the winding magnetic field,the method of calculating the eddy current loss of the hollow tube winding transformer is obtained.The feasibility of the theoretical analysis is verified by comparing the theoretical analysis with the simulation of the finite element model.

关 键 词：空心管型绕组 绕组损耗 镜像法 变压器 

分 类 号：TM4[电气工程—电器]