A STUDY ON TRACTION SYSTEM OF TTX(TILTING TRAIN EXPRESS)

초록

Speeding up of the conventional railways adopted in Japan and Europe requires less investment than laying a new infrastructure dedicated to fast railway systems. In this way, tilting trains that can negotiate curves at high speed will be introduced along with partial improvement of the related infrastructure. Tilting trains are currently in operation in 13 countries around the world. With the advances in tilting technology, verification of economic efficiency, and changes in economic situations, the introduction of tilting trains will rapidly spread across the globe. The Korean tilting train developed in this project is designed for a design speed of 200 km/h and a maximum operating speed of 180 km/h for bidirectional operation on the conventional lines in a power-distributed EMU type. The traction and control systems are the core electric components of the train which consist of converter/ inverter, motor, and main transformer. The control method of the conventional railways can be divided into the resistance control method, chopper control method, and VVVF inverter control method depending on the control method. The motor car needs to have high capacity and speed characteristics. Diverse control systems have been used according to the characteristics of the motor car to control such characteristics properly. The control system for motor traction has improved along with the advances in power semiconductor elements. In this paper, we developed a measurement system for on-line test. Using this measurement, we studied for performance of traction system.