Inductance Based Sensorless Control of Switched Reluctance Motor

This paper presents a sensorless control of switched reluctance motor (SRM) driven by the four phase asymmetric bridge inverter. In this method to obtain the rotor position of switched reluctance motor by means of resonant circuit method. The resonant circuit comprising of the motor and the power electronic converter, motor phase inductance and the parasitic capacitance of converter switches. For salient machines, in general, the associated resonance frequency of the circuit depends on the rotor position. The method is characterized by the fact that very short voltage pulses are used to trigger resonance between the magnetic energy stored in the phase inductances and the energy stored in parasitic capacitances associated with the power semiconductor devices, power cables and motor phase windings. The analysis, design and simulation of indirect rotor position estimation of SRM is simulated using MATLAB SIMULINK.