가감속 성능향상을 위한 매입형 영구자석 견인전동기 연구

Abstract

In this study, it is necessary to analyze characteristics of the improvement of acceleration/deceleration performance using the existing vehicles according to the operation specifications. Also, it is important to analyzed the traction power of the improved acceleration/deceleration performance of vehicle, to calculate the capacity per a motor and to design the final conceptual design. To improve the acceleration/deceleration of railway vehicles, it is necessary to analyze acceleration/deceleration characteristics of existing railway vehicles. Therefore, in this study, the acceleration/deceleration characteristics of the propulsion system were analyzed based on the existing Seoul Metro's Line 2 vehicle. Based on the specification of the 5M5T of Line 2 vehicle, the required torque and capacity per a traction motor of vehicle were analyzed when the acceleration/deceleration is raised from the existing 3.0km/h/s to 4.8km/h/s or 6km/h/s. Based on the analysis of the required torque and capacity per a traction motor according to the vehicles(5M5T, 8M2T, 9M1T and 10M) and acceleration(3.0km/h/s, 4.8km/h/s, 6.0km/h/s), the basic design of the traction motor was performed for each vehicle and acceleration. The traction motor was designed with a interior permanent magnet synchronous motor with high efficiency and high power density compared to the conventional induction motor. The size of the traction motor was set to the limited size of the conventional traction motor of 5M5T and the acceleration of 3.0km/h/s.