大容量高频变压器磁芯损耗特性分析及结构选择_赵波.pdfVIP

工艺·技术·应用 大容量高频变压器磁芯损耗特性分析及结构选择 1 2 2 1 赵 波 ，张 宁 ，李 琳 ，刘海军 (1. 国网智能电网研究院, 北京 102209 ； 2. 华北电力大学 电气与电子工程学院, 北京 102206) 摘 要：磁芯的选择对大容量高频变压器性能具有决定性影响。首先详细介绍了典型磁芯材料的高频损耗 特性，包括性能特点比较、正弦激励下磁芯损耗计算方法、高频下典型磁芯材料的损耗对比以及应用效果比较。 其次，详细介绍了典型磁芯结构的选择，包括单相磁芯结构的选择，比较了环型、CC 型和 EE 型等典型单相磁 芯结构的特点和应用场合。同时，介绍了三相磁芯结构的选择，利用 CC 型磁芯结构的组合构成三相使用的磁 芯结构。对大容量高频变压器的磁芯选择进行系统的理论分析，可以为大容量高频变压器磁芯选型提供支持。 关键词：高频变压器；磁芯材料；功率损耗；结构选择 + 中图分类号：TM271 .2；TM433 文献标识码：A 文章编号：1001-3830(2016)01-0039-05 Loss characteristics analysis and structure selection of magnetic core of high-power high-frequency transformers 1 2 2 1 ZHAO Bo , ZHANG Ning , LI Lin , LIU Hai-jun 1. State Grid Smart Grid Research Institute, Beijing 102209, China; 2. School of Electrical Electronic Engineering, North China Electric Power University,Beijing 102206, China Abstract: The choice of magnetic core has a decisive influence on the performance of high-power high-frequency transformer. Firstly, in this article high frequency loss characteristics of typical core material was introduced, including their typical characteristics comparison, loss calculation method under sine excitation, constrast of core loss under high frequency sine excitation and comparison of application effect. Secondly, the choice of typical core structure was discussd, including choice of core structure of single phase, and the characteristics and application occasions of core structure types of annular, CC and EE