Modelling of Permanent Magnets Track in the Finite Element Analysis of Linear Synchronous Motor

Petar Milkov Uzunov

The paper presents a special technique for magnetic way modeling in its FEM - based ( Finite Elements Method) analysis of the AC magnetic field, which aims at accurate calculation of forces acting on the moving  part of one Permanent Magnet Linear Synchronous  Motor (PMLSM). Here has been used an approximation of AC solutions of problems for linear motors with replacing the permanent magnet ways by AC current sheets.  This models the synchronous movement of the magnets interacting with the AC currents in the mover winding. Calculated thrust and attractive force of the linear motor on the base of AC and DC motor magnetic field analysis was compared with the results from experiment and their good match has been proved.