S. Kirthika Devi, V, and S G. Srivani. “Synchronous Reference Frame DQ Current Control for Single Phase Grid Connected Cascaded H Bridge Multilevel Inverter”. International Journal of Engineering & Technology 7, no. 4 (October 14, 2018): 4730–4736. Accessed May 4, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/18848.