Roncero-Clemente, Carlos, Enrique Romero-Cadaval, Oleksandr Husev, and Joao Martins. 2016. “New Operation Strategy for a Grid-Connected Three-Phase Three-Level NPC QZS Inverter Based on Power Losses”. Elektronika Ir Elektrotechnika 22 (3):60 - 65. https://doi.org/10.5755/j01.eie.22.3.15316.