中国电机工程学报2016，Vol.36Issue(23)：6552-6559,8.DOI:10.13334/j.0258-8013.pcsee.160794
大功率中频变压器空心绕组交流电阻的计算方法
AC Resistance Calculation Method for Hollow Conductor Windings in High Power Medium Frequency Transformers
摘要
Abstract
When hollow conductors are applied to high power medium frequency transformer (MFT), both utilization ratio of the conductor material and cooling efficiency of the transformer can be improved. However, because of the unique shape, it is difficult to evaluate AC resistance of hollow conductors by analytical calculation directly. To solve this problem,this paper combined the analytical and numerical method. Relationship between AC resistance of hollow and the solid conductors in MFT was got by abundant finite element models calculation. The relationship was concluded as a new defined parameter, hollow resistance factor. Through the analysis of the relationship between hollow resistance factor and relevant parameters, the classic Dowell analytical equation can be extended to AC resistance calculation of hollow conductor windings. A MFT prototype with hollow conductors was manufactured. The results comparison of the analytical, finite element numerical, and experimental calculation verified the correctness and effectiveness of the proposed evaluation method.关键词
大功率中频变压器/电力电子变压器/交流电阻计算方法/空心绕组/有限元数值计算/解析计算Key words
high power medium frequency transformers/power electronic transformers/AC resistance calculation method/hollow conductor windings/finite element numerical calculation/analytical calculation分类
信息技术与安全科学引用本文复制引用
律方成,郭云翔,王彦旭,于德,李鹏..大功率中频变压器空心绕组交流电阻的计算方法[J].中国电机工程学报,2016,36(23):6552-6559,8.基金项目
国家科技支撑计划(2013BAG24B02)。The National Science and Technology Supported Program (2013BAG24B02) （2013BAG24B02）
