基于解析法的磁浮列车直线电机推力和电压影响因素分析

Analysis of Factors Affecting Thrust and Voltage of Linear Motor of Maglev Train Based on Analytical Method

针对磁浮列车上直线电机的电气性能,特别是推力和电压,在使用过程中随不同影响因素的变化而变化,且不同影响因素的影响程度也不同的复杂问题,提出利用解析法分析各影响因素对直线电机推力和电压的影响,根据直线感应电机等效电路,利用解析法分别计算分析初级电流、滑差频率、气隙、初级绕组温度、次级板温度等变量对其性能的影响,并对磁浮列车直线电机进行实验。研究结果表明,静态实验结果与解析法结果趋势吻合,证明该解析法定量分析结果可靠,为直线电机的设计准确性、静态实验中给定参数的变化范围限值以及整车运行控制过程中参数波动对性能的影响预测提供科学理论依据。

In view of the complex problem that the electrical performance of the linear motor on the maglev train,especially the thrust and voltage,changes with the change of different factors,and their influence degrees are different,an analytical method is proposed to analyze the influence of the factors on the thrust and voltage of the linear motor.According to the equivalent circuit of the linear induction motor,the influence of the primary current,slip frequency,air gap,primary winding temperature,secondary plate temperature and other variables on its performance is calculated and analyzed by using the proposed method,and a platform is built to test the linear motor of the maglev train.The results show that the trend of the static test results is consistent with that of the proposed method,which proves that the quantitative results of the proposed method are reliable and provides a scientific theoretical basis for the design accuracy of the linear motor,the limit of the variation range of the given parameters in the static test,and the prediction of the impact of parameter fluctuations on the performance during the maglev train operation control process.