• Title, Summary, Keyword: HEMU 430X

Search Result 43, Processing Time 0.061 seconds

The Analysis of Acceleration Performance Resulted by Weight Variation for HEMU-430X high-speed train the Korea's next-generation electric multiple unit train (차세대 동력분산형 고속열차(HEMU-430X)의 중량변화에 따른 가속능력 분석)

  • Choi, Dooho;Cho, Hong-Shik
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.16 no.6
    • /
    • pp.3731-3735
    • /
    • 2015
  • This study reports the relationship between rollingstock weight and acceleration performance for HEMU-430X, the first electric multiple unit developed in Korea. While maintaining the consumed power, the total train weight was deliberately varied by 2%, by adding and removing weights, and the it was shown that the lighter train was found to have higher acceleration performance and hence better suited for maximum speed tests below the speed of 413km/h. According to the power consumption analysis based on the velocity data collected per 0.1 second, the balanced speed, when the traction force and air resistance become equal, was determined to be 419km/h for HEMU-430X, which is in agreement with tested result. It is expected that the analyses in this study will be utilized for the speed tests in the future.

A Study on the Estimation and Improvement of the Current Collection Performance for the Next Generation High-Speed Train (HEMU-430X) (차세대 고속철도의 집전성능 예측 및 향상 방안에 관한 연구)

  • Lee, Jin-Hee;Park, Tae-Won
    • Journal of the Korean Society for Railway
    • /
    • v.15 no.5
    • /
    • pp.429-435
    • /
    • 2012
  • The HEMU-430X is a world-class railway vehicle which aimed the maximum speed of 430km/h and the operation speed of 370km/h. To maintain high-speed operation condition over 300km/h, various requirements for satisfy exist. However, one of the most important things is a reliable supply of electricity. Especially, the dynamic interaction between the pantograph and overhead contact line at high-speed is a significant matter to pre-evaluate. In this paper, using the dynamic interaction analysis program, current collection performance of the HEMU-430X was investigated. Firstly, based on the international standard, performance of the original specifications was evaluated. In addition, through study on changes in tension and span length, improvement of the performance was considered.

A Study on Field Behavioral Characteristics of the Roadbed according to the Speed Increase in High-Speed Train (HEMU-430x)

  • Eum, Ki-Young;Lee, Jee-Ha;Park, Young-Kon
    • International Journal of Railway
    • /
    • v.6 no.2
    • /
    • pp.78-84
    • /
    • 2013
  • This paper is about the first experiment in Korea that was conducted on speeding increase up with rail speeds at 430km/h at high speed railway of designed 350km/h. and analysis data collected on vibration accelerations of roadbed. There are barely references on roadbed behavior measurement with rail speeds more than 350 km/h in Korea as it has never been conducted the experiment on it. So the experiments were confirmed the reliability through crosschecking the figures/values from respective sensors and measuring devices after measuring EMS and ICP types. Based on the study, values of vibration acceleration were less than 12% compared with the ones that conducted while speeding up of HEMU-430X. Also, figures of HSB for concrete bed tracks were 52% against the standard. According to the results, all the performance evaluation of vibration acceleration for roadbeds in transition zones is under the standard.

Study on the Behavior of Curved Track in Honam High-Speed Line considering the Running Performanace for HEMU 430-X (HEMU 430-X 주행특성을 고려한 호남고속철도 곡선궤도구조의 거동연구)

  • Kang, Yun-Suk;Um, Ki-Young;Kim, Seog-Won
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.14 no.8
    • /
    • pp.4068-4076
    • /
    • 2013
  • The wheel-rail interaction forces are influenced by the velocity of vehicle, wheel load, alignment (curve radius, cant etc). For the safety of track structure, it is required to evaluate the influences for track and influential factors. Recently, the HEMU 430-X, which was developed by Next Generation High-Speed Rail Development R&D Project, achieved 421.4km/h in a test run of Daegu.Busan section of the Gyeongbu high speed rail on March in 2013. In the case of additional speed-up test on Test-Bed Section(Gongju.Jeongeup: KP 100~128km Osong starting point), the analysis of track forces is required for outer rail by the increase of dynamic force and centrifugal force of vehicle. In this paper, the vehicle speed variation on HSL line is evaluated by TPS analysis considering the tractive effort of HEMU 430-X, tested running resistance and alignment of Honam HSR. And the track forces are evaluated by centrifugal force and impact factor on curved track.

Performance Assessment of High-Speed Transponder System for Rail Transport on High-Speed Line (철도교통용 고속 트랜스폰더시스템 고속선 실차 성능평가)

  • Park, Sungsoo;Lee, Jae-Ho;Kim, Seong Jin
    • Journal of the Korean Society for Railway
    • /
    • v.19 no.3
    • /
    • pp.304-313
    • /
    • 2016
  • It is necessary to receive telegrams transmitted by transponder tags installed along the track in order to detect the exact position of a high-speed train. In a high-speed railway environment, telegrams can be corrupted by the electromagnetic interference that comes from onboard electric train power equipment or wayside devices. In this study, we verified the railway environment compatibility of a high-speed transponder system developed as a train position detection system. We installed transponder tags on the Honam high-speed line and measured the number of error-free telegrams received from the transponder tag while the HEMU-430X was running at 268km/h~334km/h. Based on the measurement, we estimated the length of the contact zone formed between the transponder reader and tag. Field test results allow us to estimate how many error-free telegrams can be received when HEMU-430X is at speeds up to 400km/h.

Dynamic Behavior of Composite Steel Girder Bridge Exceeding Train Speed 350km/h (차세대고속열차 운행에 따른 호남고속선 강합성교의 동특성 분석)

  • Kim, Eunsung;Park, JongWoong;Sim, SungHan
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.14 no.7
    • /
    • pp.3518-3527
    • /
    • 2013
  • The new developed train(HEMU-430X) faces running at high speed over 400km/h. But The Korea railway design code gives guidelines below 350km/h speed. Honam HighSpeed Railway was also designed based on the design standard below 350km/h. Existing infra structures have to be reviewed at high speed running and the design guideline for the speed over 350km/h should be prepared as soon as possible. This paper presents (1) the simulation results of composite steel girder bridge(Kaya Bridge of Seoul-Pusan HighSpeed Railway), (2) values measured at this bridge and the comparison with simulation results, and (3) the prediction of Yonjung bridge being constructed in Honam HighSpeed Railway.

A Study on Tail Vibration Reduction for the Next Generation High Speed EMU (차세대 분산형 고속열차의 후미진동 저감에 관한 연구)

  • Jeon, Chang-Sung;Kim, Young-Guk;Kim, Seok-Won;Kim, Sang-Soo;Choi, Sung-Hoon;Park, Tae-Won
    • Journal of the Korean Society for Railway
    • /
    • v.15 no.6
    • /
    • pp.543-549
    • /
    • 2012
  • This study describes the tail vibration reduction for the next generation high speed EMU(HEMU-430X). The model of 6 cars was generated and the calculation was performed using VAMPIRE(railway vehicle dynamic software). In view of ride characteristics, HEMU-430X was expected to sway at the tail because of the yaw damper direction. The lateral acceleration of vehicle body exceeded the criteria because of hunting. To reduce this hunting motion, some methods such as wheel profile change, the change of damping coefficient for the 2nd lateral damper, the damping coefficient change of yaw damper were tested, but had little effect. Finally, the yaw damper direction was changed and the tail vibration disappeared. In real running test, the tail vibration appeared at the speed of 150km/h and the yaw damper direction change made the vehicle stable at the speed of 300km/h. The maximum test speed of HEMU-430X is 430km/h. If the tail vibration appears at higher speed, some other methods in this study may be considered to reduce it.

Influence of Vehicle Vibration on Track Geometry Measurement (차량 진동이 궤도 선형 측정에 미치는 영향)

  • Bae, Kyu-Young;Yong, Jae Chul;Kim, Lee-Hyeon;Kwon, Sam-Young
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.26 no.6_spc
    • /
    • pp.644-650
    • /
    • 2016
  • Track maintenance works based on track geometry recordings are essential to enhance the safety and comfort of railway transportation. Usually, the track irregularity has been measured by a special inspection trains which all were imported from abroad. Because the inspection train speed is limited under 160 km/h, it takes a long time to inspect railways and there is difficulty in daytime operation. To solve this problem, we started to develop a track geometry measuring system (TGMS) with measurement speed up to 300 km/h which can be installed in commercial vehicles such as HEMU-430X. In this paper, we introduce a newly developed inertial TGMS and propose two inertial navigation system (INS) algorithms (method A, B) for measuring track geometry. In order to investigate advantage and disadvantage of each algorithm, we performed vibration test of the TGMS, which was simulated by 6-axis shaking table. Through the vibration test, we analyzed the influence of vehicle vibration on the TGMS which will be installed on bogie frame. To the vibration test, two methods satisfied the required accuracy of track geometry measurement under the level of the actual vehicle vibration of HEMU-430X train. Theoretically, method A is sensitive to vehicle vibration than method B. However, HEMU-430X's bogie vibration frequency range is out of interest range of measurement system. Therefore, method A can also apply the HEMU-430X train.

An Evaluation on Derailment according to Running Safety of Next-Generation High Speed Train (HEMU-430X) (차세대 고속열차(HEMU-430X)의 주행 안전에 따른 탈선평가)

  • Sim, Kyung-Seok;Park, Tae-Won;Lee, Jin-Hee;Jeong, Gi-Beom
    • Journal of the Korean Society for Railway
    • /
    • v.15 no.4
    • /
    • pp.343-351
    • /
    • 2012
  • With the cooperation of many research institutes and railway companies, the next generation high speed train is under development for many years. To confirm the safety requirement of the developed high speed train, multibody dynamic analysis is implemented. Through this analysis, railway derailment and lateral guiding force simulation was evaluated according to UIC code 518 OR for international railway vehicle. Test results were compared by limit value of safety criteria. Safety evaluation results, according to international standards, would provide basic reference data of ensuring safety speed and track radius curve. The safety of the train at the maximum speed is verified by numerical analysis results.