Sahu, M. K., A. K. Panda, and B. P. Panigrahi. “Direct Torque Control for Three-Level Neutral Point Clamped Inverter-Fed Induction Motor Drive”. Engineering, Technology & Applied Science Research 2, no. 2 (April 11, 2012): 201–208. Accessed June 29, 2022. https://etasr.com/index.php/ETASR/article/view/117.