直线同步电机运行分析

Performance analysis of a linear synchronous motor

为了深入研究直线电机的稳定运行特性,根据Maxwell原理,建立了分析直线同步电机稳态的电磁场数学模型。采用有限元方法进行离散,计算直线电机的磁场分布及电磁力,并开发了直线电机性能分析软件。软件计算得出直线电机悬浮力和推力随功角、电流变化等特性曲线的结果与ANSYS的计算结果一致,并具有模型简单、计算快速等优点,分析结果可为直线电机运行提供理论依据。

The mathematical model of a linear synchronous motor （LSM） is presented for FEM calculation in this paper. The performances of LSM used in EMS-MAGLEV are analyzed on the basis of computation of electromagnetic forces including the propulsion and levitation forces. Then the results, which are compared to those from the commercial software, ANSYS, prove the validation of the results by the software developed with the proposed method, The performance curves between the electromagnetic force and other parameters of LSM are then obtained by the calculation of the propulsion force and levitation force, The features of LSM are discussed and the methods of improving the LSM performance are presented in this paper.