• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.883-888
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• 2004

Pressure waves are generated when high speed train runs through the tunnels. These pressure waves not only affect passenger's health, but also can cause fatigue failures on the vehicle structure. The current high speed train should run on the conventional lines. In this study, pressure fluctuations by the high speed trains such as G7 Korea High Speed Train and Korea Train eXpress are measured in the cabin and the carbody surface when they pass through the tunnels. The measured results are analyzed and the related parameters are investigated.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.613-618
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• 2008

Proto-type Korean High Speed Train(HSR 350x) had developed in 2002 through G7 High Speed Train R&D project from 1996, had carried successful trial running test up to 350km/h and has been executing running test more than 0.2 Mil. kilometers of accumulated running distance to insure reliability on service line till July 2008. Even though the R&D project has finished by Oct. 2007, the proto-type train HSR 350x has maintaining various measuring functions and test facilities till now. So it may be needed a suggestion on the direction of practical use in public purpose of the HSR 350x. This study has suggested several directions of practical use in public purpose of the HSR 350x, and feasibilities for each alternatives of practical use in order to contribute making reasonable decision for practical use of the train in public purpose for the future.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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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.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집 특별세미나,특별/일반세션
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• pp.429-433
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• 2009

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.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제54권3호
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• pp.127-133
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• 2005

Korean multi-propulsion system consists of a synchronous alternator driven by a gas turbine driving synchronous alternator coupled to a rectifier - DC link - DC/DC converter and traction system based on modification of the G7 high-speed train. The simulation modules include turbine engine system, alternator, rectifier, DC/DC converter and power management module. Simulation for the multi-propulsion system such as a modular is presented in order to confirm the system stability for loads with uncertain input impedances and control loop speeds. This paper deals with various simulation modules with a specific control loop to help the development of the real lame-scaled system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.1398-1401
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• 2004

In case the problem came into the headlight composed of a bulb, lens and reflecting mirror, it has a sealed-beam type which must exchange all and semi-sealed beam type which can exchange only bulb. The headlight of train must be used at the time of going into tunnel and atmospheric phenomena such as heavy snow, rain and foggy as a rule, also it can be used with whistle blow when the dangerous article appears. In this study, general technical specification to improve headlight of the KTX and G7 high speed train is described throughout investigation technique of the industrialized country and headlight specification of train which is on commercial service.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 춘계학술대회 논문집
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• pp.356-361
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• 2005

The Korean High Speed Train(KHST) had been developed and evaluating on the Kyoung-Bu High Speed Line by through 'G7-R&D project'. In order to evaluate the function and characteristics of high speed train system, various experimental conditions have been considered and conducted. In this paper, current collection characteristics of KHST between pantograph and catenary system and dynamic behaviors are measured and analysed over 300 to 350km/h in running speed of KHST. A measuring system which was developed and installed on the Korean High Speed Train for the performance and mechanical characteristics of the KHST pantograph is used for this trial running test and we proofed that KHST has a remarkable and stable current collection characteristics as it had been designed.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.334-341
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• 2004

This study is to establish design method and evaluation technology for drive system appropriate to high speed tilting train. The transmission system of high speed train serves in the severe condition compared with those of KHST(G7), namely, they have to transmit high power to run with high speed and they have to make maximum use of the limited space. This paper reports the reviews and results of the design and evaluation method for reduction gearbox of high speed tilting train and discusses various design items and methods about assembly and parts of reduction gearbox.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2000년도 추계 학술발표대회 논문집
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• pp.84-85
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• 2000

G7 고속전철개발 산업에서 계획된 부속실은 경부 고속전철(K-TGV)의 부속실을 그대로 사용하는 것으로서 좁은 통로와 획일적 공간, 불필요한 공간에 의한 승객 편의시설의 결여되었기에, 이의 수정보완이 요구되었다. 아래의 사진들은 K-TGV의 부속실 모습이다. (중략)

• 한국철도학회:학술대회논문집
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• 한국철도학회 2001년도 추계학술대회 논문집
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• pp.156-162
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• 2001

Current collection performance on-line tests for a Korean High Speed Train being developed in G7 project is scheduled to start in June, 2002. In this paper, preparatory efforts for measuring contact forces which is regarded as one of major measuring items in the test are introduced. Specifically speaking, review of frequencies related with contact force fluctuations, brief of contact force measuring algorithm, review of measuring instrument specifications and development of a data acquisition program are presented.