A Study on Control of Waste Energy from Electric Train

초록

The ESS for a DC 1500V was developed in 2009. At the first time, the factory tests of the ESS were performed. Characteristics of catenary voltage with/without the ESS were compared. The catenary voltage with the ESS did not drop. But the voltage without ESS is extremely fluctuated. The ESS was installed on the track of Daejeon HRT in Korea in 2010. The advantage of using the ESS is that the ESS saves the energy. The catenary voltage is always fluctuated. The voltage of charging/discharging of the ESS should be changed by fluctuations of the catenary voltage. This paper presents the control method to upgrade the energy saving rate of the ESS installed in Daejeon Metro line 1. The method is about Charge-Discharge Auto Level Tuning Algorithms to improve system following of Energy Storage System in electrical train.