| Title |
Thermal Analysis and Test of Eddy-Current Braker for High-Speed Train |
| Authors |
정수진 ; 강도현 ; 구대현 ; 김동희 ; 방덕제 |
| Keywords |
High-speed train ; Eddy-current braker ; Convection heat transfer coefficient ; 2D-FEM |
| Abstract |
When a high-speed train reduces its operating velocity while decelerating from a maximum of 350 to 50 [km/h], the train applies eddy-current brakes, which results in a deceleration time of approximately 3minutes. Therefore, a high current is utilized in order to obtain a large braking force. Consequently, the temperature of the electromagnet and rail increases significantly. In this paper, The thermal characteristics on a single magnet pole with convection heat transfer coefficient are simulated by using 2D-FEM. To verify the analysis results, the computed temperatures are compared with the experimentally measured temperature at stationary state. Furthermore, transient-state thermal analysis is performed to predict the magnet temperatures as the train is decelerating. |