engleski

Application of Switched Reluctance Motors in Electric Vehicles

Switched reluctance motor (SRM) has a perspective of exploitation in electric vehicles. Two very important issues of comfortable driving and vehicle autonomy time can be addressed with quality torque control of SRMs. For the SRM torque control we propose an approach based on constrained predictive control. In particular, we consider a three-phase 12/8 SRM and its highly nonlinear torque characteristic we approximate in a piecewise affine (PWA) form. Based on this approximation a PWA model of the considered SRM is constructed and used for model-based torque controller design. The SRM torque control approach we introduce has a very beneficial feature of systematic way of closed-loop controller design which makes the torque-ripples bounded with respect to given limits in both motor operation modes -- motoring and breaking. More to it, even a secondary power-consumption objective can be respected within our approach which directly affects vehicle autonomy time.

switched reluctance motor; piecewise affine model; torque ripples; invariant set; electric vehicle

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