No-load magnetic field analysis of double-sided linear tubular permanent magnet synchronous machine

This paper presents no load magnetic field analysis of a double-sided linear tubular permanent magnet machine (DSLTPM) with a radially magnetized permanent magnet mover and iron-cored stator winding by using analytical method. Knowledge of magnetic field distribution inside the machine is essential for optimal design of machine. The field distribution is obtained by use of magnetic vector potential in a 2D rz plane of cylindrical coordinate and their results are verified with magnetostatic calculation based on finite element methods(FEM). The close agreements of analytical with FEM results, supports the correctness of analysis.