Dr. Umer Tabrez Shami

This Project aims at the control of Multi-Level inverter using Arduino UNO microcontroller. The power electronics device which converts DC power to AC power at required output voltage and frequency level is known as inverter. Inverters can be broadly classified into single level inverter and multilevel inverter. Multilevel inverter as compared to single level inverters have advantages like minimum harmonic distortion, reduced EMI/RFI generation and can operate on several voltage levels. A multi-stage inverter is being utilized for multipurpose applications, such as active power filters, static var compensators and machine drives for sinusoidal and trapezoidal current applications. The drawbacks are the isolated power supplies required for each one of the stages of the multi-converter and it�s also lot harder to build, more expensive, harder to control in software. Recently, inverters are considered an integral part in renewable energy systems which are used to convert DC input voltage to AC output voltage. This is because most of RE power outputs such a solar, wind, tidal and biomass are in DC while the electrical transmission system is based on AC. However, presence of Harmonics on its output, leads to severe effect on the performance of the systems connected to them. As compared to two-level inverters, multilevel voltage source inverters (MVSIs) have better harmonics profile which they will be able to reduce the harmonics distortion without decreasing the power output.

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