Analysis of local force distribution in a permanent magnet motor using different computational algorithms

Electromagnetic force distribution in a high speed permanent magnet motor (HSPM) has been studied. Two algorithms of local force calculation in a 2D finite element model of the machine have been proposed and discussed. Numerical models have been elaborated in the Maxwell and MagNet environment. In the paper, force distribution on a stator surface has been calculated and compared. The no-load operation mode (only magnets generate force) of the machine has been considered. Special attention has been paid to the force acting on a stator tooth.