result, a multilevel power converter structure has been introduced as an alternative in high power and medium voltage situations. A multilevel converter not only achieves high power ratings, but also enables the use of renewable energy sources. Renewable energy sources such as photovoltaic, wind, and fuel cells can be easily interfaced to a multilevel converter system for a high power application [1-3].
INTRODUCTION TO MULTILEVEL INVERTERS An attempt is made to present the most common multilevel (three-level) inverters and briefly describe their advantages and disadvantages based on a literature survey. The literature survey was intended to compare the inverters based on their performance aspects and the challenges and restrictions they could impose for application in the given area. The fundamental purpose of considering multilevel inverters instead of the popular two level inverters is due to the