Modelling of Permanent-Magnet Synchronous Machines with Non-Sinusoidal Flux Linkage

Paper i proceeding, 2002

In this paper, a model of the permanent-magnet synchronous machine is derived including the effects of a non-sinusoidal flux density distribution, produced by the permanent magnets on the rotor. The intention of the derivation is to yield a framework model, suitable to add additional phenomena, by other researchers. It is shown that the non-sinusoidal flux density will produce current ripple which may affect the performance of various rotor-position estimation algorithms. The current ripple is demonstrated through measurements on an existing machine.