Power semiconductor devices

Power electronic circuits are essential parts in any renewable energy system. Power semiconductor devices are used as switches in these power electronic circuits. This chapter discusses the basic structure, properties, characteristics, ratings, and turn-on and turn-off characteristics of different types of power semiconductor switches. Recently, wide band gap devices such as silicon carbide-and gallium nitride-based power devices have shown a promising future for power-electronic applications, as they have a higher voltage rating, high temperature stability, and low switching and conduction losses. The basic features, characteristics, and applications of power devices based on these materials have also been presented.