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Analysis of IM Fed by Multi-Carrier SPWM and Low Switching Frequency Mixed CMLI

Srinivas Reddy Chalamalla, S. Tara Kalyani

This paper presents analysis of induction motor fed by a Multi-carrier based sinusoidal pulse width modulation (SPWM) and a low frequency switching mixed cascaded multilevel inverter (MCMLI). A cascaded multilevel inverter using a single dc source and a capacitor is promising quality output waveform is known as mixed cascaded multilevel inverter (MCMLI) and its implementing with seven-level. Since the method using low frequency switching it has less switching losses and has high single stage output efficiency. Also the paper presents modelling and simulation of a Multi-carrier based SPWM Multilevel Inverter of high switching frequency, thereby showing the output comparison to MCMLI. Both test systems are modelled using MATLAB. In this work, SIMULINK is used and tested Induction Motor characteristics at different loads.