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A Fast Analytic Model of Axial Flux Permanent Magnet Machines with Static/Dynamic Axis Eccentricity

Journal of Magnetics, Volume 21, Number 4, 31 Dec 2016, Pages 554-560

Baocheng Guo (School of Electrical Engineering, Southeast University), Yunkai Huang *

(School of Electrical Engineering, Southeast University)

Abstract

This paper presents a general analytical model to calculate the characteristics of axial-flux permanent-magnet machines with axis eccentricities. The radial and tangential magnetic flux densities in the air gap under normal conditions were first obtained using a combination of Maxwell’s equations and Schwarz-Christoffel (SC) transformation. Next, equations for the radii were deduced to investigate the static/dynamic eccentricities. The back electromotive forces (EMFs) were calculated and compared with those obtained from finite element (FE) analysis. The analytical predictions show good agreement with the FE results. Detection approaches were obtained by comparing with normal conditions, and the analytical model was verified experimentally.

Keywords: analytical model; axial flux PM machines; back EMFs; eccentricities

DOI: https://doi.org/10.4283/JMAG.2016.21.4.554

Full Text: PDF

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