Evaluation of Stator Parameters Effects on Magnetic Flux Harmonic Distortion of Interior Permanent Magnet Synchronous Motor (IPMSM)

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In this paper the effects of some of stator parameters on flux density harmonic distortion in an interior permanent magnet synchronous motor (IPMSM) are presented. It is common sense that one of the main causes to deform magnetic flux density waveforms in an IPMSM is the stator slots. But the role of each section of slots in this phenomenon is different and it will be seen that some of them have insignificant effect, so that it can be neglected. In addition of slots, stator winding distribution with the aid of winding function theory will be analyzed also. For this purpose, with the aid of numerical and analytical calculations٫ flux density variations and harmonic distortion with respect to slot dimensions will be evaluated. Also harmonics of two different winding functions and their effects on magnetic flux density will be assessed.
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Harmonic Distortion; IPMSM; Stator Slots; Winding Function

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