Abstract
Multilevel Inverters (MLI) created a milestone due to increasing demand in high power medium voltage applications. To decrease the harmonics content and stress across power semiconductor devices, multilevel inverters are used. In this paper, a nine-level inverter is presented with a auxiliary circuit that requires a minimum number of power devices compared to the traditional MLI topologies. The suggested nine-level inverter's control circuitry is controlled by an ATmega8 microcontroller in this study. Opto-isolators with galvanic isolation supply the triggering pulses to operate switches. A nine-level inverter to power 100 W load is implemented using two proposed auxiliary circuits for renewable energy applications. The presented nine-level inverter's control switches are driven using a DC level shifting method. The suggested inverter's functionality and feasibility are confirmed by the experimental and simulation findings.
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