• Title, Summary, Keyword: TTX(Tilting Train Express)

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The Numerical Analysis off the Flow-field Around the Korean Tilting Train Express (한국형 틸팅 열차 주위 유동장 수치 해석)

  • 윤수환;김태윤;고태환;권혁빈;이동호
    • Journal of the Korean Society for Railway
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    • v.7 no.3
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    • pp.193-199
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    • 2004
  • Numerical analysis of aerodynamic characteristics was differently performed according to the running situation of the Korean Tilting Train eXpress(TTX) that would be introduced for an improvement in efficiency of the used railroad track. Fluent 6.0 was used for the analysis of Non-tilting case, Tilting case and Passing-by case with the model of TTX. As a result, the aerodynamic drag had little difference between Tilting and Non-tilting case. However, pressure contour under the train of Tilting case was not symmetry because the gap between a train and the ground was different at both sides. In Passing-by case attraction and counterattraction occurred alternately and affected to the opposite train. When two trains were side by side, the maximum attraction was generated especially. Through an analysis of pressure wave in tunnel a large variation of pressure was generated by the bluff nose of TTX. The results in this study would be good data for the aerodynamic characteristic on TTX and provide important information to judgment of running safety.

Design Techniques of Tilting Train(TTX) using the system engineering (PDM) (SE관리기법(PDM)을 이용한 틸팅차량(TTX) 설계기술 연구)

  • Han Seong-ho;Song Yong-su
    • Proceedings of the Korean Society For Composite Materials Conference
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    • pp.203-206
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    • 2004
  • Tilting train has been developed to increase the operational speed of the trains on conventional lines which have many curves. This train are tilted at curves to compensate for unbalanced carbody centrifugal acceleration to a greater extent than compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves. This paper developed PDM(product data managemnet) to make a system engineering of TTX(tilting train express) with maximum operation speed 180 km/h.

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Safety evaluation of dynamic behavior of Korean tilting train (TTX차량의 동역학적 거동의 안정성 평가)

  • Yoon, Ji-Won;Kim, Nam-Po;Kim, Young-Guk;Kim, Seog-Won;Park, Tae-Won
    • Proceedings of the KSR Conference
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    • pp.194-200
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    • 2007
  • The tilting train is able to tilt its body towards the center of the turning radius, preventing roll-over of the train as it runs on a curved rail at high-speed. This train, widely accepted for commercial purpose internationally is very beneficial in that the operating time is shortened without much capital investment to the infrastructure where there are many curved rails. Over several years, the Korea Railroad Research Institute(KRRI) has developed such a train. In this paper, the safety of the Korean tilting train express(TTX) is investigated using a dynamic simulation model. Since, proper safety standards have not been established for the TTX, those for the Korean train express(KTX) is employed instead to analyze the safety and ride comfort of the TTX. This study will prove useful in predicting the behavior of the TTX and ride comfort, and conforming that designed TTX measures up to the safety standards. It would be useful to recommend proper normal operating speed and determine the maximum safety speed, according to the result. Furthermore, it would be possible to provide basic reference data when analyzing the dynamic effect of the catenary system and the fatigue of the bogie.

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A Study on Performance Evaluation of On-board Electric Device of TTX(Tilting Train Express) (틸팅열차(TTX)의 정장품 성능평가 연구)

  • Han, Seong-Ho;Lee, Su-Gil;Seo, Sung-Il
    • Proceedings of the Korean Society For Composite Materials Conference
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    • pp.239-242
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    • 2005
  • This paper introduced an approach of improvement of performance of Electric device for EMU type Train like as TTX. The electric equipments are characterized by insulation, Noise, cooling system etc. and Their weight arc decided by these factors. There are two kinds of power source in EMU train. First, DC voltage source, 1500 volt, 750 volt is used for subway system. Second, AC power source 25000 volt is applied to high speed train and existing main lines. Composite material has the protection of inrush current and high frequency noise. We can use this material to minimize weight of train. Additionally we can get energy saving when operator service TTX.

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A Study on Harmonic Analysis and Evaluation According to Operating Mode During Operation of the Tilting Train Express (한국형 틸팅열차 운행 중 운전 모드에 따른 고조파 분석 및 평가에 관한 연구)

  • Kang, Chul;Lim, Jae-Chan;Huh, Jae-Sun;Kim, Jae-Chul;Lee, Su-Gil;Han, Soung-Ho
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.58 no.4
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    • pp.416-421
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    • 2009
  • Recently, the new Korean Tilting Train Express(TTX) which maintains a speed on the curve railway line is developed. Electric railways, including the TTX, have electrical problems that could bring about serious accidents. For such reasons, the electric railway's electrical problems, electrical harmonic and others, have been studied briskly. Thus, TTX's electrical problems also need leading studies because the new Korean TTX will operate earnestly in 2012. The results could be used hereafter diagnosis of it's components and train conditions. In the paper, electrical signals in TTX operation were measured to analyze electrical harmonic. In addition, after the electrical signals were measured to operating mode (coasting mode, acceleration mode and regenerative breaking mode) respectively in test section(Ho-nam line, Chung-buk line, Jung-ang line and Tae-baek line). The electrical harmonics considered operating modes triparted were analysed and evaluated.

Safety evaluation of dynamic behavior of Korean tilting train (TTX차량의 동역학적 거동의 안정성 평가)

  • Yoon, Ji-Won;Kim, Nam-Po;Kim, Young-Guk;Kim, Seog-Won;Park, Tae-Won
    • Journal of the Korean Society for Railway
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    • v.10 no.5
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    • pp.540-545
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    • 2007
  • The tilting train is able to tilt its body towards the center of the turning radius, preventing roll-over of the train as it runs on a curved rail at high-speed. This train, widely accepted for commercial purpose internationally, is very beneficial in that the operating time is shortened without much capital investment to the infrastructure where there are many curved rails. Over several years, the Korea Railroad Research Institute (KRRI) has developed such a train. In this paper, the safety of the Korean tilting train express (TTX) is investigated using a dynamic simulation model. Since proper safety standards have not been established for the TTX, those for the Korean train express (KTX) is employed to analyze the safety and ride comfort of the TTX. This study is useful in predicting the behavior of the TTX and ride comfort, and conforms that designed TTX is stable enough to satisfy the safety standards. It would be useful to recommend proper normal operating speed and determine the maximum safety speed, according to the result. Furthermore, it would be possible to provide basic reference data when analyzing the dynamic effect of the catenary system and the fatigue of the bogie.

Technical review of train set formation of Highspeed Tilting EMU(TTX) (고속틸팅전기차량(TTX)의 시스템 편성을 위한 기술검토(TTX))

  • Han, Seong-Ho;Lee, Su-Gil;Ko, Tae-Hwan
    • Proceedings of the KIEE Conference
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    • pp.287-289
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    • 2004
  • Tilting train has been developed to increase the operational speed of the trains on conventional lines which have many curves. This train are tilted at curves to compensate for unbalanced carbody centrifugal acceleration to a greater extent than compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves. This paper investigated train formation of TTX(tilting train express) with maximum operation speed 180 km/h.

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Development of tilting simulator for evaluation of Tilting control of Highspeed Tilting EMU(TTX) (고속틸팅전기차량(TTX)의 틸팅제어성능 검증을 위한 시뮬레이터 개발)

  • Han, Seong-Ho;Kim, Jung-Suk;Song, Young-Su;Lee, Su-Gil
    • Proceedings of the KIEE Conference
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    • pp.232-234
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    • 2004
  • Tilting train has been developed to increase the operational speed of the trains on conventional lines which have many curves. This train are tilted at curves to compensate for unbalanced carbody centrifugal acceleration to a greater extent than compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves. This paper developed tilting control simulator to evaluate tilting control performance of TTX(tilting train express) with maximum operation speed 180 km/h.

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Analysis of aerodynamic characteristics on the Korean Tilting Train Express (한국형 틸딩 차량의 공력 특성 해석)

  • Yun Su-Hwan;Kim Tae-Yoon;Kwon Hyeok-bin;Lee Dong-Ho
    • Proceedings of the KSR Conference
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    • pp.679-684
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    • 2004
  • Numerical analysis of aerodynamic characteristics was differently performed according to the running situation of the Korean Tilting Train eXpress (TTX) that would be introduced for an improvement in efficiency of the used railroad track. Fluent6.0 was used for the analysis of Non-tilting case, Tilting case and Passing-by case with the model of TTX. As a result, the aerodynamic drag had little difference between Tilting and Non-tilting case. However, pressure contour under the train of Tilting case was not symmetry because the gap between a train and the ground was different at both sides. And this disparity of pressure worked on the side force. In Passing-by case attraction and counterattraction occurred alternately and affected to the opposite train. When two trains were side by side, the maximum attraction was generated especially. Through an analysis of pressure wave in tunnel a large variation of pressure was generated by the bluff nose of TTX. The results in this study would be good data for the aerodynamic characteristic on TTX and provide important information to judgment of running safety.

  • PDF

A study on a Component Test of Train control and Management System for Korean Tilting Train Express (한국형 틸팅열차 열차제어진단장치의 구성품시험에 관한 연구)

  • Han, Ju-Seop;Lee, Su-Gil;Han, Seong-Ho
    • Proceedings of the KSR Conference
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    • pp.701-705
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    • 2006
  • This paper dealt with a component test of train control and management system(TMS) developed for korean tilting train express(TTX). This system that is established on TTX monitors and controls action of various devices by running of the train. Also, to performance estimation of the TMS, it is essential to verify a composition and function of TMS. Therefore, this study reviewed standards related on a component test of the TMS and confirmed test items, test conditions and evaluation basis on a Component Test. Running Test of TTX can verify performance of TMS and communications with other devices and secure reliability of TMS.

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