考虑纵向动态边端效应的短初级直线感应电机等效电路改进模型

An improved equivalent circuit model for short primary linear induction motor considering longitudinal dynamic end effect

直线感应电机由于纵向动态边端效应的存在,在运行过程中会产生附加损耗和附加力,使得电机性能表现变差。针对该问题,本文从传统等效电路出发,通过在原有励磁支路上添加并联边端效应支路的方式,构建了考虑纵向动态边端效应的短初级直线感应电机等效电路改进模型,并推导了边端效应支路上的电磁参数。试验结果表明,本文提出的等效电路改进模型与传统等效电路相比,推力计算误差更小,验证了本文提出的改进模型准确性。

Due to the longitudinal dynamic end effect,linear induction motors incuradditional losses and forces during operation,resulting in poor motor performance.Based on the traditional"T"type equivalent circuit,this paper constructs an improved equivalent circuit model for short primary linear induction motor considering longitudinal end effect by adding parallel end effect branches to the original excitation branch,and derives various parameters.The experimental results show that the improved model proposed in this paper has smaller errors compared with the traditional"T"type equivalent circuit,and indicates the reliability and effectiveness of the proposed model.