ABSTRACT
Power electronics is the branch of electronics that studies application systems ranging from less than a few watts to more than 2 gigawatts. These systems encompass the entire field of power engineering, from generation to transmission and distribution of electricity and its industrial use, as well as transportation, storage systems, and domestic services. The progress of power electronics has generally followed the microelectronic device evolution and influenced the current technological status of machine drives. The amount of power produced by renewable energy devices like photovoltaic cells and wind turbines varies significantly on an hourly, daily, and seasonal basis due to variations in the availability of the sun, the wind, and other renewable resources. This variation means that sometimes power is not available when it is required, and sometimes there is excess power.
