• 전기의세계
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• v.53 no.6
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• pp.37-42
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• 2004

고속전철은 비행기가 활주로에서 이륙하는 속도를 능가하는 시속 300km이상의 고속으로 운영되는 열차로서 고도의 제어기술이 총동원되는 기술의 결합체이다. 고속전철내의 전자 장치들은 단지 추진이나 제동의 기능뿐만 아니라 차량의 상태에 대한 모니터 링, 온라인 진단, 여행자 정보서비스 및 테스트용 백업 등 다양한 기능을 수행하게 되어 있으며, 이러한 기능들을 보다 안전하고도 효율적으로 수행하기 위하여 분산제어방식으로 구축되고 있다. 특히 20량까지 연결하여 운영하는 고속전철의 특성상 각 차량에 고루 분산되어 있는 분산제어시스템을 효과적으로 지원하기 위한 제어네트웍은 고속전철 제어시스템의 중추적인 역할을 담당하고 있다고 하겠다.(중략)

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1209-1212
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• 2008

The high-speed EMU is assembled with distributed EMI sources. Therefore, it contains more electromagnetic sources nearby the distributed victims than the existing concentrated traction system. The electromagnetic sources and victims are identified in this research, and the methodology how to handle EMI/EMS/EMC of the high-speed EMU will be developed for safer operation. It includes measurement method, safety standards of control units and others, and performance evaluations of the firstly developed trial products for the EMU. Also influences by modern telecommunication equipments and effect of PLD(power line disturbance) are to be surveyed in this research.

• Journal of the Korean Society for Railway
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• v.11 no.3
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• pp.300-310
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• 2008

Through this study, a conceptual design for the next generation high-speed EMU has been derived to meet the crash worthiness requirements of the Korean rollingstock safety regulation. The crashworthiness regulations require some performance requirements for two heavy collision accident scenarios; a train-to-train collision at the relative speed of 36 km/h, and a collision against a standard deformable obstacle of 15 ton at 110km/h. The complete train set will be composed of 2TC-6M with 13 ton axle load, which is different from KTX with the power car of 17 ton axle load. Using theoretical and numerical analyses, a crashworthy conceptual design was derived in terms of mean crush forces and energy absorptions for principal crushable structures and devices. The derived conceptual design was evaluated and improved using one dimensional dynamic simulations for the bar-spring-damper-mass model. It is shown from the simulation results that the suggested conceptual design can easily satisfy domestic crashworthiness requirements.

• Journal of the KSME
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• v.50 no.5
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• pp.40-43
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• 2010

• Proceedings of the KSR Conference
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• 2000.05a
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• pp.300-307
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• 2000

현재 KERI의 고속전철 T.F.T.는 최고속도 350kph를 목표로 하는 한국형 고속전철 개발과제에 참여하고 있다. KERI의 연구분야는 전기시스템 엔지니어링으로, 열차의 전기 및 기계시스템의 진단 및 제어를 수행하는 차상컴퓨터시스템의 엔지니어링 설계를 포함하고 있다. 본 설계는 승객의 안전과 제작 운전, 유지보수 단계에서의 경제성 확보라는 측면에 시스템 엔지니어링 개념을 두고 있다. 본 논문에서는 한국형 고속전철(KHST)의 안전성과 신뢰성을 책임지는 차상컴퓨터시스템의 엔지니어링 설계안을 제시한다. 본 설계안은 네트웍을 통한 분산처리시스템에 초점을 맞추고 있다.

• Proceedings of the KSME Conference
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• 2008.11a
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• pp.973-978
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• 2008

This study concerned on the critical speed due to hunting and snake motion train to ensure the stability. First, the critical speed was calculated by using a numerical model, and calculated the critical speed of the vehicle through the simulation with the use of ADAMS/RAII. Also, the snake motion was confirmed through a modal analysis and running simulation. The calculated results, show that the rail irregularity becomes the influential factors of the stability since it is the direct source of excitation of the vehicle.

• Journal of the Korean Society for Railway
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• v.13 no.5
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• pp.493-499
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• 2010

The next generation domestic high speed railway system is a power dispersed type and uses vector control method for motor speed control. Nowadays, inverter driven induction motor system is widely used. However, recently PMSM drives are deeply considered as a alternative candidate instead of an induction motor driven system due to their advantages in efficiency, noise reduction and maintenance. In this paper, the maximum torque control approach is presented for the IPMSM drives with reluctance torque. The applied control method uses maximum torque control per ampere technique. Simulation programs based on Matlab/Simulink are developed. Finally the designed system is verified by simulation and their characteristics are analyzed by the simulation results.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.307-313
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• 2011

Hyundai Rotem Company has designed and manufactured the next generation high speed EMU bodyshell (M3-car). Korean Railway Safety Law specifies the loads vehicle bodies shall be capable of withstanding, identifies what material data shall be used and presents the principles to be used for design verification by analysis. Therefore, in order to fulfill the structural requirements, Hyundai Rotem Company has carried out Finite Element Analysis (FEA) and static load test to verify whether the carbody structure has enough strength to withstand the loads specified by Korean Railway Safety Law. This research contains the results obtained by the FE analysis and static load test. The FE analysis is carried out using NX I-DEAS 6.1 and specially designed test jigs and equipment are used for the load tests.

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.1006-1010
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• 2010

This paper discusses the numerical study on the stability of the high-speed EMU by developing its lumped parameter model including the effect of the creepage. The 6, 10 and 14 degrees-of-freedom (DOF) lumper parameter dynamic models are developed and the critical hunting speeds calculated from each model via Matlab software are analyzed and compared. It is demonstrated that the critical hunting speeds decrease while the degrees-of-freedom increase. In addition, the parametric study is conducted to extract major design parameters to influence on the stability of the high-speed EMU.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1172-1181
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• 2008

The industrialized country is progressing the front picture of the High Speed ENU and research for the space design. especially, A Streamline nose design for a technology and competitive power confirmed report is important. This research set up the designing process for a streamline nose model development through scientific assessment. We reflected the needs of the user and presented also a human engineering the space design. This research presented the key point to establish an identity confirmed of a Korea High Speed ENU.