中国电机工程学报2024，Vol.44Issue(16)：6697-6706,10.DOI:10.13334/j.0258-8013.pcsee.230877
基于镜像法的高频圆导线变压器漏感计算模型
Leakage Inductance Calculation Model of High-frequency Round Conductor Transformer Based on Image Method
摘要
Abstract
The leakage inductance of high-frequency transformers is an important parameter affecting the power transmission characteristics and operational reliability of solid-state transformers,so it needs to be predicted quickly and accurately during the design stage.Due to the high computational cost of the numerical method,it is difficult to meet the requirements of quickly predicting leakage inductance during the transformer design stage.Currently,the analytical method is often used to calculate leakage inductance parameters.The calculation models based on one-dimensional magnetic field assumption ignore the influence of the winding edge effect and cannot accurately estimate leakage inductance.Although most two-dimensional calculation models consider the influence of transverse leakage flux,the solution of Poisson equation and the representation of current density in terms of series lead to an overly cumbersome calculation process.Therefore,this paper accurately extracts the leakage magnetic field in the core window based on the image principle,derives an analytical expression for the DC leakage magnetic energy in this area,and introduces frequency-dependent factors that take into account the skin effect and proximity effect of the winding to reveal the attenuation law of leakage inductance in a wide frequency range,and establishes an analytical calculation model for leakage inductance that can simultaneously consider the frequency-dependent characteristic and winding edge effect.Finally,a leakage inductance measurement platform is built and a detailed experimental study is carried out on transformer prototypes with different porosities to verify the accuracy and validity of the proposed model.关键词
圆导线变压器/漏感/镜像原理/端部效应/频变特性Key words
round conductor transformer/leakage inductance/image theory/edge effect/frequency variation characteristic分类
信息技术与安全科学引用本文复制引用
赵志刚,郑宇萱,陈天缘,刘朝阳,葛雅婕..基于镜像法的高频圆导线变压器漏感计算模型[J].中国电机工程学报,2024,44(16):6697-6706,10.基金项目
国家自然科学基金项目(52077053) （52077053）
河北省人才工程培养资助项目(A201902009).Project Supported by National Natural Science Foundation of China(52077053) （A201902009）
Talent Cultivation Funding Projects of Hebei Province(A201902009). （A201902009）
