Metelsky, V. P., and V. A. Volkov. “Estimation of General Energy-Savings in Three-Phase Ac Power Circuits by Balancing Phase Currents Using Power Active Filter”. Electrical Engineering and Power Engineering, no. 2 (December 22, 2010): 68–73. Accessed November 23, 2024. http://ee.zntu.edu.ua/article/view/92665.