Simulation of the Sensorless Switched Reluctance Motor Drives

This paper considers sensorless control of switched reluctance motor drives, in which switching positions of the phases are determined by comparing the calculated and measured values of flux linkage. In the practical implementation of this algorithm, under certain conditions, a progressive accumulation of errors appears in determining of the switching position. To identify these conditions simulation model of the drive in MATLAB - SIMULINK has been developed. Simulation showed that one of the reasons for the failure of the algorithm may be the spread of the electromagnetic parameters of the phases due to technological deviations in the manufacture of the motor. Theoretical studies were confirmed experimentally.