• Title, Summary, Keyword: Maximum Speed Test

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Running Performance Analysis to Determine Optimal Test-bed Section for the Maximum Speed of 400km/h (400km/h 운행 최적 시범구간 선정을 위한 주행성능해석)

  • Chung, Heung-Chai;Eum, Ki-Young;Yun, Jang-Ho
    • Proceedings of the KSR Conference
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    • pp.2594-2599
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    • 2011
  • In Korea, the HEMU-400X(High-speed Electric Multiple Unit-400km/h eXpress) has been developed since 2007 and will be operated over 400km/h in 2013. It is necessary to prepare test-bed section in Honam high-speed railroad to take the maxim running speed test for the HEMU-400X developed. In order to determine proper test-bed sections for the maximum speed of 400km/h, TPS(Train Performance Simulation) program with the data of train model, running resistance, traction power and braking capacity was used to analyze the train performances such as locations, speeds and power consumptions by times. In this study, the specifications of the HEMU-400X project and the route conditions of the Honam high-speed railroad under construction were utilized for the TPS program to determine the optimal test-bed sections for the maximum speed of 400km/h.

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A Study on Maximum Speed Test for On-board Signalling Equipment in HEMU-400x (차세대고속열차 차상신호장치 최고속도 시험방안에 관한 연구)

  • Shin, Duc-Ko;Lee, Jae-Ho;Lee, Kang-Mi;Kim, Yong-Kyu;Park, Choon-Soo
    • Journal of the Korean Society for Railway
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    • v.12 no.5
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    • pp.670-677
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    • 2009
  • This paper is a study of testing on-board signalling equipment in advanced high speed rail at the maximum speed of 400km/h. The on-board signalling equipment in advanced high speed rail provides operating information to the driver when operating at ATC, ATS, and ATP sections, and maintains safety from driver oversight, signalling equipment malfunction, natural disasters and so on. Since the testing train performance of advanced high speed rail at 400km/h must include the function test of on-board signalling equipment, this thesis focuses on the function test of on-board signalling equipment and analyze the necessity of the test at the maximum speed. Finally, it is suggested to change some infrastructure and to use specific test methods to test the train performance at the maximum speed in high speed line ATC section.

Maximum Moment Calculation in Order to Assure a Mast Foundation Strength in a Test-Bed for the Maximum Speed of 400 km/h (400km/h급 Test-Bed 교량 구간 단독주 기초 강도검토를 위한 최대 모멘트 계산)

  • Lee, Ki-Won;Kwon, Sam-Young;Cho, Yong-Hyeon;Chung, Heung-Chai;Park, Young
    • Proceedings of the KSR Conference
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    • pp.1497-1502
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    • 2011
  • Increasing tensions of contact wire and messenger wire are essential to construct a test-bed for catenary system in the 400km/h speed on Honam high-speed railway. Because heavy load is applied to a mast due to the increased the tensions of both wires it is required to investigate the strength of the foundation. Therefore, in this study the maximum moment of an electric pole under the worst condition was calculated to investigate the strength of the pole foundation on the bridges. The maximum moment database table used in the construction of Kyungbu high-speed railway was referenced to derive the worst conditions and to review the composition of catenary system in the test-bed section. From the results of this study regarding assumptions and calculation process it will be possible to estimate the optimized strength of the pole foundations on the bridges which will be constructed in the future.

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A Study of Overall Measurement System for the Power dispersed High Speed Railway with 400km/h of Maximum Test Speed (최고시험속도 400km/h 동력분산형 고속철도의 종합계측시스템 구성 방안 연구)

  • Lee, Young-Yeob;Ryu, Sang-Hyun;Kim, Bong-Rae;Lee, Jun-One
    • Proceedings of the KSR Conference
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    • pp.1785-1790
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    • 2010
  • This study examined the overall measurement system for the power dispersed high speed railway with 400km/h of maximum test speed. The measuring system evaluating an efficiency, stability and reliability is important for developing the high speed railway. In order to organize the comprehensive measuring system, it is needed to determined the test item, a number of channel and the specifications of the measurement system. In this study, we made lists for the performance evaluation tests of the next generation high speed railway expected to be developed in the future, and prepared generalization channel sheets for the specification of the overall measurement system. In addition, the specifications for the measuring system were discussed and synthesized.

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The Feasibility Study of the Scenario of 400kph Maximum Speed Test in HEMU (High-speed Electric Multiple Unit) System (400km/h급 전차선로 시스템의 시범적용 구간선정 연구)

  • Ryoo, Hyang-Bok;Jang, Sa-Sool;Park, Jae-Woong;Lee, Hae-Won
    • Proceedings of the KSR Conference
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    • pp.761-767
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    • 2011
  • Since the "Low Carbon, Green Growth" as a social requirements is attracted public attention, the policies and investments of the railway which have been less estimated than road is re-considered. Since the starting the commercial service (2004. April), the KTX have been operated successfully while transport passengers over 100million for years. And also the project for development of KHST (Korea High Speed Train ; G7) had been accomplished with a good result, the first trainset of KTX-II which base on G7 project was manufactured and testing now. On the other hand, the world's technology of the high speed train is more faster, and changing to a distributed traction system. To catch up the world's leading technology, the HEMU(High-speed Electric Multiple Unit) project will secure new technology and aims to promote the technology of domestic high-speed train. The authors indicates the result of detail review such as a curve, slope of the track and electrical dead section of the catenary to test at 400kph and also the performance simulation of the developed rolling stock in this paper. As the result, the authors devise the test scenario to perform a maximum speed test (stability at max. speed, acceleration & deceleration etc) with the restricted conditions such as track length, track available time etc by considering above result.

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A simulation study on predicting current collection performance with respect to the contact wire tension in 400km/h test run of the next high speed train HEMU-400X (차세대 고속철도 최고속도 시험에서 전차선 장력 증가 단계별 집전 성능 예측 시뮬레이션)

  • Kwon, Sam-Young;Park, Chun-Soo;An, Seung-Hwa
    • Proceedings of the KSR Conference
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    • pp.201-206
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    • 2009
  • In the testing stage of HEMU-400X(next Korean high speed train) developing project, maximum speed(400km/h) tests will be conducted. On present and near future conditions of the overhead contact lines, 400km/h is over the design speed criteria. The predictions of current collection performance including the percentage loss of contact(arcs level) parameter through dynamic interaction simulation of HEMU-400X maximum speed test run are described in this paper. Various simulations are conducted at the condition of two different contact wire tensions to draw the proper contact wire increasing values in the 400km/h test line under the available contact wire tension supporting condition of that line.

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Study of high speed and high torque performance of brushless DC motor drive for maximum power (고속 고출력 영구자석 전동기 최대 출력 운전에 관한 연구)

  • Bin J.G.;Kim C.U.
    • Proceedings of the KIPE Conference
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    • pp.122-124
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    • 2006
  • ADD is under development for the high speed motor. This paper describes simulation and test results for obtaining the maximum output by leading angle of encoder. So we carried out the test for obtaining the optimum leading angle of encoder. Test results on the motor of 7 phases 6 poles were showed the validity of proposed methods and phase-leading angle.

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Reliability assesment of tilting train using Fault Diagnosis analysis device (고장진단분석장치를 이용한 틸팅열차 신뢰성 평가 연구)

  • Han, Seong-Ho
    • Proceedings of the KIEE Conference
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    • pp.1203_1204
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    • 2009
  • Korean Tilting trains have tested on conventional lines since the beginning of 2007 for evaluating its reliability. We achieved some major performance tests which are the maximum operation speed 180km/h test and the maximum curves increasing speed with tilting operation test. In order to analysis reliability data of tilting train, we have used the special data aquisition system which consists of monitor, sensors and depot computer etc. As a results of calculation, until now we realized that the reliability are getting more increasing than starting point of running test.

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Dynamic analysis of train-bridge system under one-way and two-way high-speed train passing

  • Jahangiri, Meysam;Zakeri, Jabar-Ali
    • Structural Engineering and Mechanics
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    • v.64 no.1
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    • pp.33-44
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    • 2017
  • In this paper, the dynamic responses of train-bridge system under one-way and two-way high-speed train passing are studied. The 3D finite element modeling is used and the bridge and train are modeled considering their details. The created model is validated by the results of the dynamic field test. To study the effect of train speed, different train passing scenarios are analyzed, including one-way passing, two-way passing in different directions at same speeds, and two-way passing in different directions at different speeds. The results show that the locations of maximum acceleration are different in one-way and two-way passing modes, and the maximum values in two-way passing mode are higher than those in one-way passing mode, while the maximum accelerations in both modes are almost identical. The displacement and acceleration values in different scenarios show peaks at speeds of 260 and 120 km/h, due to the proximity of the natural frequencies of the bridge and loading frequencies of the train at these speeds.

Analysis of Drawbar Load Acting on Tractor Engine at Maximum Drawbar Power (최대 견인 출력시 트랙터 엔진의 견인 부하 분석)

  • Kim, S.C.;Kim, K.U.;Kim, D.C.
    • Journal of Biosystems Engineering
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    • v.34 no.2
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    • pp.71-76
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    • 2009
  • This study was conducted to investigate the load acting on a tractor engine when it delivers the maximum power at drawbar. The results of the drawbar tests on the 5 locally-made and 14 imported tractors conducted at NIAE in 2004, and the 15 tractors tested at OECD test stations in foreign countries were analyzed and presented by the torque load ratio, defined as a ratio of the engine torque load caused by drawbar pull to its full-load capacity, as a function of pull speed. The NIAE test results showed that the torque load ratio increased from 20 to 80% with pull speed less than 5 km/h. At speeds faster than 5 km/h, it was 80${\sim}$110% regardless of the pull speed. However, the OECD test results showed that the torque load ratio was evaluated mostly to be 70${\sim}$90% in the entire pull speed range. The same trend was also shown for the maximum drawbar load. The difference in the torque load ratio may be attributable to bias-ply tires for locally-made and some imported tractors. It is also suggested that the input torque load may be increased safely up to 120% of the full load capacity of the tractor engine for an accelerated life test of tractor transmissions.