绝缘磁芯变压器漏磁计算  

Leakage inductance calculation of the insulated core transformer

作　　者：胡金杭[1] 曹磊[2] 杨波[1] 杨军[2] 

机构地区：[1]中国电力科学研究院南京分院,江苏南京210003 [2]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2016年第2期47-50,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(11305068);非动力核技术湖北省协同创新中心资助项目

摘　　要：针对绝缘磁芯变压器中的绝缘层气隙引起的漏磁以及线圈之间的漏磁会导致次级线圈输出电压的不均匀性的问题,根据三相绝缘芯变压器的磁路特征,建立了任意两相之间的等效电路模型,该模型由气隙引起的漏感、线圈之间的漏感和互感以及理想变压器构成.利用通用的电路仿真软件,对绝缘芯变压器的设计及其稳态响应进行分析.借助于有限元磁场分析软件,通过线圈端口处的短路测试对电路中漏磁电感进行计算.基于等效电路模型的漏磁计算方法能够精确地衡量各线圈之间漏磁的不均匀性,为漏磁补偿以及整流电路的设计提供便利.Magnetic flux leakage caused by the insulation layers and the leakage between coils in the insulated core transformer （ICT ） will lead to the inhomogeneity of secondary output voltage .Accord‐ing to the characteristics of the three‐phase ICT ,the equivalent electrical circuit model between any two phases was established .It was composed by the leakage inductances of the insulation gaps ,leak‐age inductances between coils and their mutual inductances ,and the ideal transformer .Using the gen‐eral circuit simulation software ,the design and steady‐state analysis of an ICT were feasible .With the aid of magnetic field finite element method （FEM ） software ,all the leakage inductances can be exactly calculated by performing short circuit tests at each coil terminal .The proposed equivalent circuit mod‐el can not only accurately measure the inhomogeneity of magnetic flux leakage ,but also facilitate the design of flux compensation capacitances and the rectifier circuits .

关 键 词：电力系统 绝缘芯变压器 等效电路 漏磁电感 漏磁计算 

分 类 号：TM415[电气工程—电器]