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直线感应电机是直线电机车辆的核心设备。由于纵向和橫向的边缘效应的存在,在沿用旋转感应电机的计算方法计算直线感应电机时,导致计算结果误差较大。本文针对直线电机地铁中的直线感应牵引电机,通过引入修正系数,提出一种直线感应电动机的等效电路,该电路考虑了纵向边缘效应、橫向边缘效应与集肤效应,可以较为精确的求解出该电机的特性。仿真结果表明,等效电路应能真实的反映电机的实际情况,与电机实际工作性能吻合。
Linear induction motor is the core of linear motor vehicles. Due to the vertical and horizontal edge effects, the linear induction motor is calculated using the calculation method of rotating induction motor, resulting in a large error in the calculation results. In this paper, aiming at the linear induction traction motor in the linear motor metro, an equivalent circuit of the linear induction motor is proposed by introducing the correction factor. The circuit considers the longitudinal edge effect, the lateral edge effect and the skin effect, and can be solved more accurately The characteristics of the motor. Simulation results show that the equivalent circuit should be able to truly reflect the actual situation of the motor, consistent with the actual performance of the motor.