High Performance SRM Drive with Hybrid Observer and Fuzzy Logic Torque Ripple Minimization

This paper presents a high performance switched reluctance motor (SRM) drive based on hybrid observer (HO). The HO estimates the rotor position and speed for wide speed range. In addition, a fuzzy logic current compensator (PLCC) for reducing torque ripple has been presented. In the regions that torque reduces, the FLCC, inject additional current for each phase currents. This drive has been simulated with MATLAB/SIMULINK for nonlinear model of SRM. Simulation results show that proposed drive will estimate the rotor position and speed with high precision for all speeds (near zero speeds up to rated speed). Also, FLCC minimize the torque ripple and reduce speed estimation error, too. This drive has the advantages of robustness, high reliability and without extra hardware, drive performance has been improved.