直线感应电动机横向边缘效应分析

本文运用电磁场基本理论，在一些合理假定的基础上，建立起双边型短初级直线感应电动机的物理模型，经过较为详细的论证，得到了沿横向的准一维气隙磁场的分布规律。进而又推导出直线感应电动机横向边缘效应两组等效系数公式（电流密度系数ＫＪ、电阻率系数Ｋρ、有功功率系数ＫＰ、无功功率系数ＫＯ），为直线感应电动机的设计计算提供了较为简捷、准确的计算横向边缘效应的方法。

ANALYSIS OF TRANSVERSE END-EFFECT OF A LINEAR INDUCTION MOTOR

A physical model of a short-primary double-sided linear induction motor (LIM) is designed based on the basic theories of electromagnetic field and some assumption. The paper describes the distribution pattern of transverse quasione-dementional air gap through detailed demonstration and calculation. Two groups of equivalent coefficient for transverse end-effects are derived, i. e., the coe.of current density KJ, the coe. of resistivity K., the coe. of active power Kp,and the coe. of negative power KQ, which provide a more simple and accurate method for calculating transverse end-effects in the designs of LIM.