Five-level inverter with a neutral point connection and a flying capacitor

Multilevel inverters have become a well proven technology in medium voltage drives, especially due to their improved power quality. This paper presents a new five-level inverter topology that is based on a neutral point connection and a flying capacitor. The operation of the topology is presented, taking into account the balancing of the flying capacitors. The performance of the topology is demonstrated with simulations, and compared with five-level active neutral point clamped inverter.