REVIEW OF TRANSFORMERLESS UPFC DEVICE FOR POWER QUALITY ENHANCEMENT IN POWER SYSTEM. International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 4, n. 12, p. 1069–1082, 2017. Disponível em: https://ijaerd.org/index.php/IJAERD/article/view/4619. Acesso em: 6 sep. 2025.