Experimental Verification of Four Switch Pwm Ac Chopper Fed Single Phase Induction Motor

To improve the performance of motor drives, there is a need to improve the quality and reliability of the drive system. With the high power handling capability of the switching device, pulse width modulated AC chopper can be used in high power applications. AC chopper using pulse width modulation provides substantial advantages over conventional line commutated AC controllers. To alleviate the problems associated with the conventional AC voltage controllers, pulse width modulated AC chopper fed induction motor drive is developed and presented in this paper with an appropriate control circuit. The FFT analysis for voltage and current is performed for the developed system. The simulation is done using matlab and the hardware is implemented using an embedded microcontroller. The experimental results are compared with the simulation results.