SHAVOLKIN, A. A. he hybrid multilevel converter of frequency on the basis of the inverter of voltage with four levels. Electrical Engineering and Power Engineering, [S. l.], n. 2, p. 43–49, 2010. DOI: 10.15588/1607-6761-2010-2-7. Disponível em: http://ee.zntu.edu.ua/article/view/92654. Acesso em: 28 apr. 2024.