Electromagnetic evaluation of an in-wheel double rotor axial-flux switched reluctance motor for electric traction


P.Andrada, E.Martínez, M.Torrent, B.Blanqué




In this paper, a novel in-wheel double rotor axialflux switched reluctance motor for electric traction is presented. The proposed double rotor axial-flux switched reluctance motor has a particular disposition of the stator and rotor poles that provides short flux path without flux reversal. The ferromagnetic pieces of the stator and the rotor are built using soft magnetic composites. Electromagnetic analysis is performed using three dimensional finite element analyses, 3D FEA. Matlab-Simulink simulation coupled with the results of finite element analysis proves that the proposed motor drive is suitable for the propulsion of a given E-scooter.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 15)
Pages: 671-675 Date of Publication: 2017/04/25
ISSN: 2172-038X Date of Current Version:

REF: 428-17

Issue Date: April 2017
DOI:10.24084/repqj15.428 Publisher: EA4EPQ

Authors and affiliations

P.Andrada, E.Martínez, M.Torrent, B.Blanqué
GAECE, DEE, EPSEVG. Universitat Politècnica de Catalunya UPC-BARCELONATECH, Vilanova i la Geltrú, Spain

Key word

FEM analysis, switched reluctance motor, axial-flux switched reluctance motor, traction motor.


[1] L. E. Unnewehr and W.H. Koch. “An axial air-gap reluctance motor for variable speed applications,” January/February 1974, IEEE Transactions on Power Apparatus and Systems.
[2] Arihara and K. Akatsu.”Basic properties of an axialtype switched reluctance motor”. IEEE Transactions on Industry Applications, Vol 49, No 1, January/February 2013.
[3] Murakami, H. Goto, O. Ichinokura. “A study about optimum stator pole design of axial-gap switched reluctance motor”. ICEM 2014, 2-5 September. Berlin.
[4] R. Madhavan, B.G. Fernandes. “Axial flux segmented SRM with a higher number of rotor segments for electric vehicle”. IEEE Transactions on Energy Conversion, Vol. 28, No 1, March 2013.
[5] Labak, N.C. Kar. “Designing and prototyping a novel five-phase pancake-shaped axial flux SRM for electric vehicle application through dynamic FEA incorporating flux-tube modeling”. IEEE Transactions on Industry Applications, Vol. 49, No 3, May/June 2013.
[6] Ma, R. Qu, J. Li. “Optimal design of an axial flux switched reluctance motor with grain oriented electrical steel”. 18th International Conference on Electrical Machines and Systems (ICEMs), 25-28, October 2015, Pattaya City, Thailand 2015.
[7] T. Kellerer, O. Radler, T. Sattel, S. Purfürst. “Axial type switched reluctance motor of soft magnetic composite”. Innovative Small Drives and Micro-Motor Systems, 19-20 September 2013, Nuremberg, Germany.
[8] T. Lambert, M. Biglarbegian, S. Mahmud. “A novel approach to the design of axial-flux switched reluctance motors”. Machines 2015, 3, 27-54; doi:10:10.3390/machines3010027.
[9] P. Andrada, E. Martínez, B. Blanqué, M. Torrent, J.I. Perat, J.A. Sánchez. “New axial-flux switched reluctance motor for E-scooter”. ESARS ITEC. Toulouse, 2-4 November 2016.
[10] Flux 12.1. Altair 2016.