Equivalent Magnetic Network Modeling of Grain-Oriented Silicon Steel Sheets Permanent Magnet Linear Synchronous Motors

The aim of this paper is to accurately and rapidly compute the performance of permanent magnet linear synchronous motors with grain-oriented silicon steel sheets for initial design procedures. Therefore, an equivalent magnetic network model with considering the anisotropy of grain-oriented silicon steel sheets is proposed, and the uneven magnetic density distribution of the primary tooth is also considered. The equivalent magnetic network makes it possible to evaluate the influence of core saturation by iteration, from which the flux linkage, the back electromotive force and the thrust of the motor are calculated. Finally, the accuracy of the equivalent magnetic network model is verified by finite element method results.