DongHee CHOI, S.-M. B. “Strategy to Increase Hosting Capacity of Renewable Energy in Stand-Alone Microgrid Based on Droop Control of ESS”. International Journal of Advanced Science and Technology, Vol. 29, no. 3, Feb. 2020, pp. 4239 -47, http://sersc.org/journals/index.php/IJAST/article/view/5179.