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Eccentric Reluctance and Permanent Magnet Synchronous Machines Comparison | IEEE Journals & Magazine | IEEE Xplore

Eccentric Reluctance and Permanent Magnet Synchronous Machines Comparison


Abstract:

This paper deals with a comparative study between reluctance (REL), permanent magnet assisted reluctance (PMAREL), and surface mounted permanent magnet (PM) synchronous m...Show More

Abstract:

This paper deals with a comparative study between reluctance (REL), permanent magnet assisted reluctance (PMAREL), and surface mounted permanent magnet (PM) synchronous machines with rotor eccentricity. Static, dynamic, and combined eccentricity cases are considered. For the sake of generality, this comparison is carried out at different levels of air-gap flux density, as different current angles, different PM materials, and different number of magnetic poles. Additionally, different stator windings arrangements, i.e, distributed and fractional slot concentrated windings are taken into account. Besides, different rotor geometries of REL and PMAREL machines are included. As a case of study, 36-slot machine is analyzed, considering three flux barriers per pole; however, the study can be applied to any machine geometry. Due to the structural criticality of the rotor iron ribs of the REL machines, the impact of the eccentricity on the mechanical stress acting on those ribs and the deformation of the rotor is studied.
Published in: IEEE Transactions on Industry Applications ( Volume: 54, Issue: 6, Nov.-Dec. 2018)
Page(s): 5760 - 5771
Date of Publication: 18 June 2018

ISSN Information:


I. Introduction

Manufacturing imprecisions of electrical machines, such as shaft bow, mass unbalance, bearing tolerance, and lamination tolerance are common during the manufacturing process. These imprecisions could result in several types of rotor eccentricity, in which magnetic, dynamic, and structural problems can occur in the electrical machine [1]–[3].

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References

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