DIGITAL SIMULATION OF INDUCTION START PERMANENT

Abstract

This paper model and simulates an Induction
Start Permanent Magnet Synchronous (ISPMS) motor with
asymmetry. The parameters like winding inductances and
permanent magnet flux linkages are calculated directly from
the geometry and winding layout of the machine using
reluctance-mmf network. The model takes into account of
many phenomena such as slot opening and the rotor
movement, with a good compromise between calculation
time and accuracy of results. Using the modified winding
approach, the effect of salient pole rotor and stator winding
mmf distribution on the inductances are closer to those
obtained from finite element computation. The influence of
slot opening on the air gap field distribution over the
permanent magnet flux linkage has been studied. Finally,
using these parameters the dynamic performance of an
induction start permanent magnet synchronous motor is
simulated and the results are shown to be in good
agreement with the solution obtained by a conventional dq
model.