A study of the train performance simulation for Korean next Generation high-speed train

The next generation high-speed train system, HEMU-400X, has been developed in Korea since 2007. HEMU-400X means High-speed Electric Multiple Unit – 300 experimental. Objectives of HEMU-400X project is development of next generation high-speed electric multiple unit with maximum operation speed 370km/h and maximum test speed 400km/h, energy efficiently and environment friendly. At present, the detailed design and component manufacturing are in progress. Because of no experience for high-speed electric multiple units, the train performance simulation is used in the detailed design. The Simulation provides a valuable tool in the design of new high-speed train. Simulation systems are being used to validate the final designs prior to any manufacturing. The train performance simulation software is developed during the previous project. This paper presents the procedure and method of the train performance simulation that have been carried out during the development of the HEMU-400X. For the train performance simulation, the train resistance model is suggested. Also suggested in this paper are the coefficients, such as the adhesion coefficient and the rotational inertia. Many simulations are studied for the performance satisfaction of HEMU-400X. It was found that the detailed design specification of HEMU-400X satisfied the traction performance criteria.