• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2012년도 춘계학술대회 논문집
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• pp.1277-1278
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• 2012

• 한국산업융합학회 논문집
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• 제26권5호
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• pp.915-923
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• 2023

As environmental regulations on carbon emissions are strengthened worldwide, the existing internal combustion engine-centered automobile industry is being reformed. In particular, large buses and large cargo trucks are pointed out as one of the main causes of environmental destruction due to excessive carbon emissions. The E-Highway power collection system, which has recently been proposed as a solution, uses the vehicle's battery as a backup power source or regenerative braking, depending on whether the pan head of the pentograph installed in the vehicle is in contact with the overhead line. It is used to store the excess energy generated. However, wear through contact due to continuous contact reduces the current collection effect and causes failure. In this paper, by using the current difference, the horizontal position information of the panhead in contact with the overhead line is acquired, thereby reducing the abrasion of the conductor and the panhead Make it possible to follow the overhead line. The position estimation method proposed in this paper simply configures a device that can detect the position of the overhead line of the pantograph by the difference in resistance. It is economical and has the advantage of reducing the volume. The characteristics of the pantograph estimating the location of overhead lines were analyzed using the difference between the two currents of the current collector, the feasibility of the positioning estimation system was verified through simulations and experiments.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 추계학술대회 논문집
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• pp.164-169
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• 2005

The TTX(Tilting Train eXpress) is designed to achieve high driving speed up to 200 km/h and to run on conventional curved rails without speed reduction. In order to maintain power collection between catenary and pantograph collector while train body is tilted, the TTX pantograph must have tilting structure (or Sledge). The power quality is determined by the tilting structure. Static and dynamic characteristics of tilting structure, therefore, are important to evaluate the pantograph performance. The current prototype of the tilting structure is overweight model and its structural characteristics have not been investigated. In this study, the finite element model of TTX tilting structure is established and static analysis is performed. Finally, using this result, a light weight model is proposed.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.924-931
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• 2011

This paper deal with maximum span calculation technique for 350km/h high speed catenary system. Considers a geometric interaction, possible maximum span length is between two pole. Wind condition and the train current collector is moving even to being pantograph does not escape while operating. Uses like this justice and possible maximum span length is follow next condition. (i) Operating range of pantograph fan head, (ii) The wind velocity which assumes from system, (iii) Width in pantograph from operation height moving, (iv) Type of processing Catenary system, specially tensile strength of overhead contact wire and messenger wire etc. When accurately calculates the maximum permission span, the dropper between of overhead contact wire and messenger wire and must consider the correlation.

• 한국철도학회논문집
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• 제13권4호
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• pp.389-395
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• 2010

본 논문은 우수한 전기전도도 및 내 아크성을 가진 동계주습판에 관한 것이다. 내마모성이 향상된 동계 주습판을 개발하여 실내실험과 현장실험을 수행하였다. 주습판 재료의 성분 조성을 변경하여 재질과 제조공정을 개선하였으며, 실내실험과 현장실험을 통하여 기존 주습판과 내마모성을 비교하였다. 실내 실험은 다이나모 실험을 통하여 이루어졌으며, 실험결과 개선품의 내마모성은 기존 제품에 비해 2배 정도 향상되었으며, 균질한 마모패턴을 보여주었다. 또한 공용중인 도시철도 구간에서 현장 시험을 수행하였으며, 현장실험결과도 실내 실험과 같이 개발된 개선품의 내구성이 기존품에 비해 2배 정도 향상되었으며, 이상마모가 발생하지 않는다는 것을 확인하였다. 내구성이 향상된 본 개발품의 현장 적용 시, 경제적이고 효과적인 도시철도 노선의 유지보수가 가능할 것으로 판단된다