电机与控制应用2026，Vol.53Issue(1)：101-109,9.DOI:10.12177/emca.2026.104
一种关于双边永磁直线电机电感参数计算方法
A Method for Inductance Parameter Calculation in Bilateral Permanent Magnet Linear Motors
摘要
Abstract
[Objective]During the operation of bilateral permanent magnet linear motor,only a small portion of the terminal voltage is allocated to the resistive voltage drop and back electromotive force across the motor windings,while the majority is applied to the inductance voltage drop across the motor windings.Thus,the accuracy of inductance parameters directly affects the rationality of the converter system capacity design.Significant deviations in inductance calculations may result in either capacity redundancy,leading to unnecessary cost wastage,or insufficient capacity,preventing the motor from achieving its specified output performance.Consequently,precise calculation holds significant engineering importance.Therefore,this paper proposes an inductance parameter calculation method.[Methods]Firstly,based on electromagnetic field theory,an analytical mathematical model for bilateral permanent magnet linear motor was established.Secondly,the expressions for the air gap magnetic flux density of a single current-carrying conductor and a single-phase excited winding of bilateral permanent magnet linear motor were derived,as well as the expressions for the self-inductance and mutual inductance of the windings.Finally,the results obtained from the analytical method were compared with the finite element simulation results to verify the effectiveness of the proposed method.[Results]The error between the calculated and simulated values of the air gap magnetic flux density was 1%,and the error between the calculated and simulated inductance was less than 2%,verifying the accuracy of the proposed method.Furthermore,operational experiments spanning light-load to heavy-load conditions were conducted on a dynamic experimental platform.The measured inductance values obtained from experiments exhibited an error of 4.6%when compared to the analytical calculation values.Additionally,the terminal voltage values derived from the inductance calculations were found to be essentially consistent with the measured terminal voltage values,thereby further validating the effectiveness and engineering applicability of the proposed inductance parameter calculation method.[Conclusion]This research provides a reliable theoretical basis and technical support for parameter optimization design and power supply system configuration of bilateral permanent magnet linear motors.关键词
双边永磁直线电机/电感计算/解析法/有限元仿真/参数优化/供电系统配置Key words
bilateral permanent magnet linear motor/inductance calculation/analytical method/finite element simulation/parameter optimization/power supply system configuration分类
信息技术与安全科学引用本文复制引用
娄一川,何梓榕,刘壮,华实,翁萍..一种关于双边永磁直线电机电感参数计算方法[J].电机与控制应用,2026,53(1):101-109,9.基金项目
中国中车原创技术培育专项计划项目(2024CGY014)China Railway Rolling Stock Corporation Original Technology Cultivation Special Project(2024CGY014) （2024CGY014）
