• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 추계학술대회 논문집
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• pp.1039-1044
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• 2005

The Objective of advanced EMU Project is development of new technologies, that can resolve the system problems of conventional EMU, for reducing vehicle maintenance, improving passenger's service using IT and providing environmental friendly. As a concept of advanced EMU, We will develop the DDM with individual driving wheel for reducing of maintenance cost and full-electric braking system without pneumatic braking, and a new bogie for loadable DDM, and pre-diagnosis system which informs possible system error, and decentralization of vehicle control. To improve transport reliability, and energy storage system for saving energy, and fallen passenger detection system for improving passenger's safety at the platform.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 B
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• pp.1322-1324
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• 2004

Lately, there is urban transit vehicles in trend that speed is increased and safety are reinforced. In the case of Japan, is developing vehicles that the electric motor of direct drive type for maintenance expense curtailment and noise decrease. It is predicted to happen the demand of EMU met new environment such as wide area railway in domestic. Furthermore, It is need the introduction of vehicles met new standard according to reinforcement of safety standard such as interior finishing material. Therefore, This paper present about the development direction of urban transit vehicles in domestic environment.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.1695-1700
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• 2011

In this paper, we introduce the network infrastructure in an advanced emu test line in Deabul. New technology has been applied to advanced EMU(DMU, integrated broadcasting system, black box and etc). In order to efficient and safely test of new developed train, failure, operation, status of test line and weather information should be monitored in real time. We has implemented a wireless and optical network infrastructure for reliability and scalability. The wireless communication capability between a car and ground is 20Mbps and back-hole network has 50Mbps of the communication performance. The network between test tracks and control office was established in the optical network. That can improve communication reliability.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2031-2036
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• 2011

To leading subway technology Advanced Urban Transit System is developed by national research and development. Next-generation trains equipped with direct driving permanent magnet traction motor and individually controlled propulsion system. Electromagnetic properties of the Next-Generation Train from four perspectives will be discussed. The first is closely related to human hazards that affect the 60Hz low frequency electromagnetic field. The Second is inductive noise that affect railroad signal system. The third is conductive noise that affect communication line near railroad. The 4th is radiation noise that may affect electronic equipment near the railroad tracks.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2276-2279
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• 2011

The AUTS(Advanced Urban Transit System) are developed by government R&D business. This units are under main line performance test in Daebul test line. Both AC and DC could apply to the AUTS for pantagraph voltage. So main transformer and some high voltage filters are added to the under-frame. As a result the total weight of each car(Mc1-Tp1-M-T-Tp2-Mc2) is different. And axle load is different each other. The main characteristics of AUTS(Advanced Urban Transit System) are as follows. One inverter control one motor, DDM(Dircet Drive Motor), no driving gear, plug no end door, self-steering bogie etc. These matters could be appeared to strange vibration. So vibration test is important. The vibration test performed to Mc1 and Tp1. The results were checked to the up-down direction and left-right direction for acceleration.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.172-174
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• 2008

In the braking process of rolling stocks, the equivalent braking force is applied to the all bogies. However, the load applied to the front and rear bogie are different in the actual commercial traveling. In the case, since the different slip situation is occurred in each bogie, it is essential to use the independent anti-slip control per bogie unit in order to reduce the loss of braking force. In this paper, the mathematical modeling about bogie unit braking is proposed and verified.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1061-1062
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• 2008

The project of advanced urban transit system (AUTS)development is developing the advanced vehicle and the core technologies for the cost down by system change, the transport safety and the environmental friendliness and the improvement of passenger service. The product data management(PDM) system is installed for management of each project. Various data and informations producted from each project are made for database. We developed the product data management system for advanced urban transit system. In past, it was AUTS-PDM of C/S version. Now, we develop AUTS-PDM of Web version.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.713-720
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• 2009

The development goals of the next generation EMU are to improve the system maintainability, transportation capacity, reliability, passenger service and energy efficiency. In this paper, we propose a measurement scheme for the development goals of the next generation Electric Multiple Unit(EMU). To achieve that, we drew meaningful characteristics for each development goal, which mainly affect effectiveness and performance of vehicle system. Finally, the measurement scheme for the development is obtained by using the characteristics, which could be a numerical values such as maximum velocity, acceleration of the vehicle and so on or subjective values such as a results of surveys from passengers and so on. We expect the proposed measurement scheme will be used to measure the development goals of other similar system as well as the next generation EMU.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.1173-1174
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• 2007

The project of advanced urban transit system development is developing the advanced vehicle and the core technologies for the cost down by system change, the transport safety and the environmental friendliness and the improvement of passenger service. The product data management system is installed for management of each project. Various data and informations producted from each project are made for database. Therefore, we develop the product data management system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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• pp.1663-1665
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• 2005

The urban transit system is operated by driverless and automatic. In driverless and automatic system, the system function is accomplished exactly to obtain the safety and reliability of system and the system is designed to minimize risk. In order to design the system, the functional analysis is performed. Recently functional analysis is performed by design tool which is used and verified by aerospace, military, etc. Generally, the design tool is used to perform functional analysis in urban transit system development project. The design toolassist the system engineer to analysis the function of system in basic design. Therefore, in this paper, it is performed the functional analysis to satisfy the system requirement of urban transit system and to confirm the operation of system using design tool.