ORGANIZATION : Compumag 2017
JOURNAL :
YEAR : 2017.06
VOL :
PAGE :
In the case of a spoke-type interior permanent magnet (IPM) motors which have a relatively short stack length as compared with the
outer stator diameter, the outputs such as back electro-motive force (EMF) and torque is less than expected by using 2D finite-element
analysis (FEA) due to the axial end leakage. In this paper, the magnetic equivalent circuit for spoke-type IPM motors reflecting the
axial end leakage flux is proposed to exactly calculate the outputs such as back EMF and torque. The airgap permeance reflects the
uneven airgap shape such as eccentricity and chamfer by dividing the airgap into many differential elements and calculating each
differential permeance. Results from the magnetic equivalent circuit is compared with the results from 2D, 3D FEA and measurement.
As a result of comparison, the acceptable results are achieved and the computational time is saved dramatically.