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Stator Slotting Effect on the Magnetic Field Distribution of Salient Pole Synchronous Permanent-Magnet Machines

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2 Author(s)
Dajaku, G. ; FEAAM GmbH, Neubiberg, Germany ; Gerling, D.

This paper deals with a new analytical method for determining the air-gap flux density of salient pole synchronous permanent-magnet (PM) machines including the stator slotting effect. The approach to analyze the air-gap flux density based on the new model is to determine the air-gap magnetomotive force (MMF) and the flux-path permeance function. We determine the flux-path permeance function, which includes the stator slotting effect, by using a simple magnetic reluctance network that takes into account the geometry of the machine and the material characteristics. Using the new model with stator slotting, we calculate the air-gap flux density distribution of different electric machines using finite-element methods to prove the accuracy of the new model.

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Magnetics, IEEE Transactions on  (Volume:46 ,  Issue: 9 )