Design And Implementation Of Switched Reluctance Machine Based Electric Vehicle

Abstract

The Switched Reluctance Machine (SRM) with the rising emphasis on energy efficiency is receiving conspicuous commercial and vehicular applications in the recent scenario. The requirement for variable speed drive (VSD) for the operation of electric vehicles (EV) is ever increasing. The paradigm shift in the auto industry towards EVs took the electrical machines to a whole new level. Due to the inherent advantages of SRM and remarkable advances in the field of power switching devices, they can be considered as a serious candidate for propulsion of EV. The Finite Element Method (FEM) based conventional method of machine modelling is not sufficient to extract maximum output from special electrical machines like BLDC, PMSM and SR Machine due to converter based excitation of phase windings. Compare to permanent magnet motor nonmagnetic SR machine suitability is very high towards EV applications. So this paper work focus towards integral approach for SR machine design is using MagNet software for the physical modelling and controller modelling using MATLAB software for improving performance by all torque producing components. Magnetic circuit parameters acquired from machine modelling are utilized for initializing the SR machine in MATLAB/Simulink environment.The complete closed loop circuit is designed with the inner current and outer speed loop based adaptive speed controllers are also designed for providing a better regulation. In order to design the controller, the optimum turns on/off angles are selected. The triggering points in inductance profile are picked with the objective function of maximizing the torque and minimizing the ripple content.