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Effect of series/parallel circuits of eccentric switched reluctance motor on vehicle ride comfort

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Journal of the Brazilian Society of Mechanical Sciences and Engineering Aims and scope Submit manuscript

Abstract

The switched reluctance motor (SRM) drives are emerging as an attractive solution for electric vehicle (EV) applications due to its favorable driving capacity. However, the inherent net radial force of SRM has an important effect on the vehicle ride comfort. This paper investigates the influences of net radial force induced by eccentric SRM with series/parallel circuits on vehicle ride comfort. The mechanical–electrical–magnetic coupling model of SRM is established by combing the numerical simulation and analytical method, in which the series and parallel circuits are structured, respectively. Then, quarter vibration vehicle models coupled with SRM are established. The net radial force of the two SRMs and ride comfort of the corresponding vehicles are simulated and discussed at different conditions. It is concluded that the SRM with parallel circuits generates smaller net radial forces, and the vehicle driven by SRM with parallel circuits will achieve better ride comfort due to the difference of branch currents.

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Abbreviations

\(c_{s} ,\;c_{t}\) :

Damping of suspension and tire

\(F_{rk} ,\;F_{{rk{1}}} ,\;F_{{rk{2}}}\) :

Electromagnetic radial force of the k-phase

\(F_{{r_{ - } z}}\) :

Component of net radial force in vertical direction

\(F_{tx}\) :

Tangential reaction force of the road surface

\(F_{tz}\) :

Normal force of the ground

\(f_{r}\) :

Rolling resistance coefficient of tire

I t :

Equivalent moment of inertia of wheel and body mass

i, i k :

Winding current in k-phase

\(k_{s} ,\;k_{t}\) :

Vertical stiffness of suspension and tire

\(L,\;L_{k} ,\;L_{u} ,\;L_{a} ,\;L_{m}\) :

Winding inductance of k-phase

l g :

Air gap between salient poles of the stator and rotor

\(m_{s} ,\;m_{u}\) :

Sprung load mass and non-sprung load mass

\(N_{r}\) :

Salient poles numbers of the rotor

R e :

Radius of vehicle wheel

R k :

Resistance of the k-phase winding

\(T_{e} ,\;T_{k}\) :

Output motor torque and the k-phase torque

U k :

Instantaneous voltage of k-phase winding

\(W_{m} ^{\prime}\) :

Magnetic common energy

\(z_{s} ,\;z_{u} ,z_{g}\) :

Vertical displacement of sprung load mass, non-sprung load mass and road surface

\(\psi ,\;\psi_{k}\) :

Flux linkage of the k-phase

\(\theta\) :

Rotor position angle

\(\dot{\omega }\) :

Angular acceleration of wheel rotation

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Acknowledgements

This research is supported by Shanghai Sailing Program (grant no.18YF1418500).

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Correspondence to Tang Qi.

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Technical Editor: Wallace Moreira Bessa.

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Zhang, D., Qi, T., Wang, S. et al. Effect of series/parallel circuits of eccentric switched reluctance motor on vehicle ride comfort. J Braz. Soc. Mech. Sci. Eng. 43, 232 (2021). https://doi.org/10.1007/s40430-021-02960-3

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  • DOI: https://doi.org/10.1007/s40430-021-02960-3

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