Design and development of three-level half-bridge NPC converter with dual 3.3 kV IGBT modulesJalakas, Tanel; Vinnikov, Dmitri; Roasto, Indrek6th International Symposium "Topical Problems in the Field of Electrical and Power Engineering" : Doctoral School of Energy and Geotechnology : [Kuressaare, January 12-17, 2009]2009 / p. 43-48 : ill