QUACH, T. H.; DO, Đức T.; BUI, M. Ẩn. Carrier pwm technique to reduce switching for 5 levels h brigde npc inverter . Journal of Technical Education Science, [S. l.], v. 11, n. 3, p. 7–14, 2016. Disponível em: https://www.jte.edu.vn/index.php/jte/article/view/409. Acesso em: 7 apr. 2026.