A Study on Development of 1500V ESS for Daejeon Subway System

초록

The EDLC voltage falls at the time of powering, but the catenary voltage doesn’t fall much. So it is expected that the voltage drop of the railway vehicle may be deterred by the discharge of EDLCs. On the other hand, the catenary voltage doesn’t rise at the time of regeneration. The ESS and continue charging and discharging in this manner because the ESS voltage reverts to the maximum through one charge/discharge pattern. The energy storage system(ESS) for a DC 1500V electrified railway was developed. A energy storage system was built for DC 1500V and verification tests were conducted in cooperation with the Daejeon Metropolitan Rapid Transit Corporation. We carried out charge/discharge tests with the ESS to verify its ability to contribute to a stable power supply for DC electrified railways. This paper presents installation of the ESS and voltage stabilization by the ESS.