Induction Motor Soft Stater Using Solid State Switching Devices

In this paper two solid state switching devices ie. Thyristor and IGBT are used to compare the performance of split phase induction motor at different firing angles. Firing angles are changed by changing the degree of two pulse generators used separately for two thyristors and in case of IGBT based two IGBTs. Total harmonic distortion is calculated for RL load in both thyristor and IGBT cases.