A Comparative Study of Total Harmonic Distortion betweenTwo Topologies 27- and 31 Multi Level Inverter. Al-Rafidain Engineering Journal (AREJ), [S. l.], v. 28, n. 1, p. 173–180, 2023. DOI: 10.33899/rengj.2022.134999.1192. Disponível em: https://rengj.uomosul.edu.iq/index.php/rengj/article/view/30863. Acesso em: 26 jun. 2026.