磁饱和网络变压器非线性模型建立  

Nonlinear Model of Magnetic Saturation Network Transformers

作　　者：许少聪 徐晓英[1] 甘瑛洁 

机构地区：[1]武汉理工大学湖北省射频微波应用工程技术研究中心,湖北武汉430070

出　　处：《河南科技大学学报（自然科学版）》2018年第3期39-44,共6页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(51277810);刘尚合院士专家工作站静电研究基金项目(BOIMTLSHJD20161005)

摘　　要：为了研究外界信号经过变压器后的输入输出特性,基于变压器的高频特性和磁饱和特性,提出了一种变压器的非线性电路模型建立方法,并进行了验证。变压器的高频特性表现为电路模型的寄生参数,构成变压器模型的线性部分。磁饱和特性表现为电路模型的可饱和磁芯参数,构成变压器模型的非线性部分。变压器模型的线性参数和非线性参数可通过实验测量的方法获取。该模型能够预判网络变压器在电缆放电等非正常大信号注入时的输入输出特性。In order to study input and output characteristics of the network transformer when the external signal was injected,based on the high frequency characteristics and magnetic saturation characteristics of the transformer,a method of establishing the nonlinear circuit model of the transformer was presented and verified.The high frequency characteristic of the transformer was the parasitic parameter of the circuit model,whichconstituted the linear part of the transformer model. The magnetic saturation characteristic was the saturable core parameter of the circuit model,which constituted the nonlinear part of the transformer model. The linear and non-linear parameters of the transformer model were obtained by experimental measurements. The model can predict the input and output characteristics of the network transformer when the abnormal large-signal such as cable discharge is injected.

关 键 词：网络变压器 高频等效模型 磁饱和 B-H曲线 

分 类 号：TM42[电气工程—电器]