A STUDY ON THE TEMPERATURE CHARACTERISTICS OF MAIN TRANSFORMER FOR RAILWAY VEHICLE

초록

Because maximum speed of vehicle, height of track, type of rail, size of sleeper and characteristics of ground have influence on transformer for high-speed train, structural stability must be secured against vibration and impact. The main transformer of KTX(Korea Train eXpress) is an important element that determines the performance of the vehicle. The temperature characteristics of the transformer have absolute influence on damage by a fire, endurance and its life. Therefore, complete understanding of the characteristics is very important work. In this paper, oil temperatures before and after cooling of the transformer were measured simultaneously. Change of oil temperature could be monitored by the measuring system. According to various conditions, the characteristics of oil temperature of the transformer and change of the temperature could be detected accurately and analyzed efficiently. In this study, using the measuring system installed in KTX and analysis program coded by LabVIEW, we measured and analyzed oil temperature of the transformer. So, we could verify the mechanical characteristics of the main transformer"