Thongprasri, Pairote. “3-Phase 19-Level T-Type Multilevel Inverter Based Low Total Harmonic Distortion”. Journal of Engineering, RMUTT 17, no. 2 (December 24, 2019): 189–203. Accessed May 7, 2024. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/241915.