Analytical Modelling of Magnetic Field Distribution in Spoke Type Permanent Magnet Machines
Résumé
An exact 2D analytical method for magnetic field and electromagnetic
torque calculation in high speed spoke type interior permanent magnet
Machines considering slotting effects, magnetization orientation and
winding layout has been proposed in this paper. The analytical method is
based on the resolution of Laplace and Poisson equations as well as
Maxwell equation in polar coordinate by using sub-domain method and
applying hyperbolic functions. The proposed method is applied on the
performance computation of a prototype spoke type permanent magnet
machine, i.e., a 3-phase 18S-8P motor. The analytical results are
validated through FEA method and experimental tests.