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Simulation of Novel 9-Level Inverter Topology With Reduced Number of Switches

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Document pages: 8 pages

Abstract: This paper presents a new circuitry for multilevel inverter which was designed by using less number of DC sources(4 batteries). Also the number of switches were reduced and IGBT were used as switches. The design is a modification of cascaded H Bridge Multilevel inverter. The steps in the output wave follow the equation 2k+1, where k is the number of DC sources. Since the number of steps is increased, the resemblance of the output waveform to the sinusoidal wave is also increased, thereby increasing the efficiency of the system, as compared to the previous models of multilevel inverter. 9 level voltage output is obtained from 4 DC sources. As the number of switches are reduced, the dV dt losses, and harmonic distortions are also reduced. The experimental setup is validated using a simple resistive load.

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