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This paper presents the speed control of 4 phase 8/6 Switched Reluctance Motor drive with PWM controller. The motor is fed from an Asymmetrical bridge converter, because of its fault tolerant capability and all the phases are independently excited. The Hall sensors provided in the motor provide signals corresponding to the position of the rotor. The speed is controlled by varying the duty ratio of the PWM controller. The pulses to the IGBT switches are generated using a Digital Signal Processor. The SRM drive with PWM controller is simulated in MATLAB/SIMULINK and also experimentally implemented at no load & partial load. The waveforms of the PWM signals and phase currents are captured by means of Digital storage oscilloscope and compared with the simulation results.

LOW SPEED OPERATION OF DSP BASED PWM CONTROL OF 4 PHASE 8/6 SWITCHED RELUCTANCE MOTOR DRIVE