EVALUATION OF INDUCTION MOTOR PERFORMANCE FOR THREE DIFFERENT DIODE CLAMPED MULTI LEVEL INVERTERS

The performance of any induction motor depends on the quality of the voltage supplied to it. Multi Level Inverters are one of the solutions to provide qualitative sinusoidal voltage for the speed control of induction motor. To realize the multi level inverters, many more topologies have been suggested. Because of the ease of control circuit design and single source requirements, diode clamped topology is most preferable for the speed control applications. In this paper the design of five-level, sixlevel and seven-level diode clamped inverters is discussed and simulated. Their performance is evaluated on the same induction motor for analysis.