PHAM, L. N.; PHAN, Q. D.; NGUYEN, V. N. Four-Level Neutral Point Clamped Inverter Fed by 18-Pulse Diode Rectifier With Low Input and Output Harmonic Distortion. Journal of Technical Education Science, [S. l.], v. 21, n. 03, p. 101–109, 2026. DOI: 10.54644/jte.2025.1773. Disponível em: https://jte.edu.vn/index.php/jte/article/view/1773. Acesso em: 3 sep. 2026.