Abstract
Power electronic inverter become popular for various industrial drives applications. The multi-level inverter system is very promising in ac drives. Large electrical drives and utility application require advanced power electronics converter to meet the high power demands. As a result, multilevel power converter structure has been introduced as an alternative in high power and medium voltage situations. A multilevel converter not only achieves high power rating but also improves the performance of the whole system in terms of harmonics. The inverter output with more numbers of voltage levels with reduced number of switches as compared to cascade H-bridge inverter, which results in reduction of installation cost and have simplicity of control system. In this paper, a new configuration of a three-phase seven-level multilevel voltage source inverter is introduced. The proposed topology constitutes the conventional three-phase five-level bridge with three bidirectional switches. This three phase inverter is fed to induction motor and checks the performance characteristics by using matlab/Simulink platform.
Keywords: Bidirectional Switch, Fundamental Frequency Staircase Modulation, Multilevel Inverter
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