高压电器2026，Vol.62Issue(3)：80-88,9.DOI:10.13296/j.1001-1609.hva.2026.03.010
干式变频变压器磁热力的计算与分析
Calculation and Analysis of Magnetic-thermal-mechanical Properties of Dry-type Variable Frequency Transformer
摘要
Abstract
The output transformer in the traction power supply system of maglev train usually operates at different frequencies.For assuring the operational reliability of this kind of transformer and analyzing the influence of fre-quency variation on its performance parameters,in this paper the magnetic-thermal-maehcnical properties of a dry-type variable frequency transformer under three operating conditions is studied.First,on the basis of measuring the magnetic characteristics of core materials at three frequencies,the magnetic field distribution,loss and short-circuit impedance under each working condition are calculated and compared by using the field-circuit coupling method.Then,the temperature distribution and hot spot temperature rise with or without harmonic influence are calculated respectively based on the finite volume method.Finally,the short-circuit performance is simulated and studied.The results show that the frequency variation has a significant effect on the core magnetic density,winding and silicon steel sheet loss and short-circuit impedance,the magnetic-thermmal-mechanical properties under the three operat-ing conditions meet the design requirements of the product and provide a reference for the development and design of dry-type variable frequency transformer in the future.关键词
干式变频变压器/铁心磁特性/漏磁场/温度场/短路力Key words
dry-type variable frequency transformer/magnetic properties of the iron core/leakage magnetic field/temperature field/short-circuit force引用本文复制引用
李欣然,王建民,杜振斌,刘兰荣,秦金立,杨莹..干式变频变压器磁热力的计算与分析[J].高压电器,2026,62(3):80-88,9.基金项目
河北省重点研发计划项目资助(V1586309661297). Project Supported by Key R&D Program of Hebei Province(V1586309661297). （V1586309661297）
