TRAN QUANG THO; TRUONG VIET ANH; LE MINH PHUONG. PWM technique with variable carrier wave frequency to reduce switching loss in grid- connected pv inverter. Journal of Technical Education Science, [S. l.], v. 9, n. 3, p. 31–38, 2014. Disponível em: https://www.jte.edu.vn/index.php/jte/article/view/552. Acesso em: 7 apr. 2026.