ELECTROMAGNETIC CALCULATION AND DESIGN OF A 2.2kW INTERIOR PERMAGNENT MAGNET SYNCHRONOUS MOTOR WITH APPLICATION TO CNC MILLING MACHINE

Abstract

In this paper, a type interior permanent magnet motor designs is proposed
for computer numerical control milling machine application as spindle motors.
An existing surface mounted permanent magnet motor is used as a reference
motor. The I type interior permanent magnet motor alternatives is designed and
optimized in detail. The electromagnetic results of interior permanent magnet
motors are compared with the reference surface permanent magnet motor for
the same design requirements. The detailed loss analysis is also performed for
the desired motor structure at high speeds. A prototype motor is manufactured
and initial experimental tests are also performed. The detailed comparison
between finite element analysis and test data are also presented. It is shown
that it is possible to have an optimized interior permanent magnet motor for
such a high speed spindle application.