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Study on Axial Flux Hysteresis Motors Considering Airgap Variation

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DOI: 10.4236/jemaa.2010.24031    4,827 Downloads   10,015 Views   Citations

ABSTRACT

Axial flux hysteresis motor (AFHM) is self-starting synchronous motor that uses the hysteresis characteristics of magnetic materials. It is known that the magnetic characteristics of hysteresis motor could be easily affected by air gap and structure dimensions variation. Air gap length plays an important role in flux distribution in hysteresis ring and influences the output torque, terminal current, efficiency and even optimal value of other structural parameters of AFHM. Regarding this issue, in this study effect of air gap variation on performance characteristics of an axial flux hysteresis motor and effect of air gap length on hysteresis ring thickness and stator winding turns is investigated. Effect of air gap length on electrical circuit model is perused. Finally, simulation of AFHM in order to extract the output values of motor and sensitivity analysis on air gap variation is done using 3D-Finite Element Model. Hysteresis loop in the shape of an inclined ellipse is adopted. This study can help designers in design approach of such motors.

Cite this paper

M. Modarres, A. Vahedi and M. Ghazanchaei, "Study on Axial Flux Hysteresis Motors Considering Airgap Variation," Journal of Electromagnetic Analysis and Applications, Vol. 2 No. 4, 2010, pp. 252-257. doi: 10.4236/jemaa.2010.24031.

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