Robust LPV current control of Switched Reluctance Motors

In this paper, a gain scheduling control design for the Switched Reluctance Motor phases current is presented. In the presence of the strong nonlinear characteristics of the motor phase inductance (dependence on the current and mechanical position) and parameters variation, the use of a fixed gain current controllers make difficult to ensure high performance with good stability robustness over the entire operating range of the Switched Reluctance Motor. To achieve a better control performance, nonlinearities and parameters variation must be taken into account in the controller design process. We address these issues by designing Linear Parameter Varying (LPV) current controller using synthesis and polytopic representation. This LPV controller assures the stability robustness with a good performance along all possible trajectories of the varying parameter. Simulations, carried out using Matlab/Simulink software, confirm the effectiveness of the proposed controller.