Joorak Kim, Gyu-Jung Cho, Chang-mu Lee, Kang Tae-Sub, Woo-Sik Oh, Jun Kyung Han, Gwang-Hee
Yoon, 2020, Analysis of the characteristics of power supply distance improvement using
a constant voltage controlled power supply device of an AC power supply system, The
Korean Society For Railway 2020 Conf., pp. 6