Abstract
With the continuous increase in demand for electrical energy, power electronics is becoming an important aspect of our lives. Renewable energy sources like Solar and Wind are helping a lot in reducing this ever-increasing demand for electrical energy besides being cheap and clean. Conventional two-level inverters used for converting DC output from renewable energy sources to AC waveform contains a lot of harmonics and are replaced by Multilevel Inverters (MLI). MLI's are gaining more and more interest in researchers these days because of small harmonic distortion and low switching frequency operation. In this paper, a Two-winding Multitapped transformer (TWMTT) based nine-level inverter is discussed in detail along with its switching sequence and its comparison with other prominent topologies of nine-level inverters is also drawn. On implementing this topology in MATLAB/Simulink, total harmonic distortion (THD) was found to be 9.37% which is very low compared to other topologies for nine-level inverters.
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