Young-Sang Ko (Member, IEEE) received the M.S. and Ph.D. degrees in electrical engineering from Sungkyunkwan University, Suwon, South Korea, in 2015 and 2020, respectively. Since 2017, he has been the CEO and a Researcher of MINMAX Corporation. His current research interests include ESS, battery, AC/DC converter, DC/DC converter, DC/AC inverter, smart gird, and photovoltaics systems.