Low Space Order Analysis of Radial Pressure in SPMSM With Analytical and Convolution Approaches

This paper presents an analysis of low space order of the air-gap radial Maxwell pressures in surface permanent magnet synchronous machines with fractional slot concentrated windings. The air-gap Maxwell pressures result from the multiplication of the flux density harmonics due to magnetomotive forc...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2016-11, Vol.52 (11), p.1-7
Main Authors: La Delfa, Patricio, Fakam, Mathias, Hecquet, Michel, Gillon, Frederic
Format: Article
Language:English
Subjects:
Air gaps
Air-gap radial Maxwell pressures
analytical tool
Coils (windings)
Convolution
convolution analysis
Deflection
Electric power
Engineering Sciences
Finite element analysis
Flux
Flux density
fractional slot concentrated winding
Harmonic analysis
Harmonics
lowest space order
Magnetic flux
Magnetism
Mathematical analysis
operational deflection shape (ODS)
Origins
Rotors
Stators
Windings
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Summary:This paper presents an analysis of low space order of the air-gap radial Maxwell pressures in surface permanent magnet synchronous machines with fractional slot concentrated windings. The air-gap Maxwell pressures result from the multiplication of the flux density harmonics due to magnetomotive forces and permeance linked to the magnet, the armature, and the stator slots and their interactions. One low space order is selected, and different approaches are compared to determine the origin of this pressure. First, an analytical prediction tool analytical calculation of harmonic force orders (ACHFO) is used to calculate the space and time orders of these magnetic pressure harmonics while identifying their origin in terms of interactions between magnet, armature, and teeth effects. In addition, the analytical prediction of ACHFO is compared with the flux density convolution and finite-element approaches. The main advantage of our tool is the speed of computation. Finally, an experimental operational deflection shape measurement is performed to show the deflection shape of the low space order selected.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2016.2589924