Roncero-Clemente, Carlos, Enrique Romero-Cadaval, Oleksandr Husev, Dmitri Vinnikov, and Serhii Stepenko. 2013. “Simulation of Grid Connected Three-Level Neutral-Point-Clamped QZS Inverter Using PSCAD”. Electrical, Control and Communication Engineering 2 (1): 14-19. https://doi.org/10.2478/ecce-2013-0002.