Comparative Research on Performance of Iron-core and Ironless Permanent Magnetic Linear Synchronous Motor

The iron core structure can change the air gap flux density of the motor.Whether there is iron core structure on permanent magnet linear synchronous motor (PMLSM) has a great impact on the motor performance. PMLSM has wide application.In this paper aiming at the application of iron-core PMLSM and the ironless permanent magnet linear synchronous motor in the driving system of medium and low speed maglev train, the models of iron-core and ironless PMLSMs based on finite element method (FEM) are established, and the force characteristics and electrical parameters of the two kinds of motors are analyzed and compared. The results show that the ironless PMLSM is more suitable for the driving system of medium and low speed maglev train.