Design of permanent magnet hysteresis motors

The hysteresis motor is so named because it is producing mechanical torque utilizing the phenomenon of hysteresis. The rotor of a hysteresis motor is a cylindrical tube of high hysteresis loss permanent magnet material without windings or slots. This paper presents the design of a hysteresis permanent magnet motor using the finite element method. The rotor of the machine consists of 36% Cobalt steel alloys with Neodymium Boron Iron permanent magnets. This hybrid motor combines the best performance features of both the typical permanent magnet motors and the conventional hysteresis motors. The finite element method is used to determine the dimensions of the optimal design