Sagar U. Shinde, Mithun Aush, Dr. K. Vadirajacharya
This paper compares two different topologies of three phase inverter (i.e. diode clamped followed by cascade H-bridge) which includes five level and seven level inverters. The selection of topology and control techniques may vary according to power demands of inverter. The comparison is done with respect to THD & number of components. The switching pattern for inverter is explained well. For each inverter IGBT’s are used as switching devices to make the comparison more accurate. The FFT spectrums for the outputs are presented to study the reduction in the harmonics. This paper deals with selection of multilevel inverter as a trade of between number of components, complexity & THD. The circuit is simulated using MATLAB/SIMULINK.
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