A transformation method from conventional three phases full-bridge topology to conergy NPC topology

Conergy NPC topology is a new topology derived from classical NPC topology. Due to its higher efficiency, less components and better EMI performance compared with three phase full bridge topology and classical NPC topologies, it was already used in photovoltaic inverters and other power electrical applications. This paper conducts a comparison between traditional NPC topology and Conergy NPC topology. A transformation method is developed which could change conventional three phase full-bridge topology to Conergy NPC topology by adding one integrated block. Simulation results verify the effectiveness of the developed method.