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김길동(Gil-Dong Kim),김재원(Jael-Won Kim),이한민(Han-Min Lee),이장무(Chang-Mu Lee),박현준(Hyun-Jun Park) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
차세대전동차는 대불 시험선에서 8만km 신뢰성 주행시험이 진행 중에 있다. 차세대 전동차는 6량 1편성으로 제작되었으며, 신뢰성 검증을 위해 만차 상태로 주행시험을 하고 있다. 주행시험 동안 고장 데이터를 주기적으로 분석하였고, 성장평가를 수행하여 신뢰성 목표치를 만족하게 되었다. 따라서 본 논문에서는 차세대 전동차의 신뢰성 성장평가관리에 따른 결과를 보여준다. The AEMU(Advanced EMU) running test has been performed to verify the reliability in the DABUL test line. For reliability verification, the AEMU consists of a 6-car production is tested as full load. Periodically, failure data from running test is analyzed and system parts are modified to reflect the result of analysis. Because these remedy actions affect reliability, the AEMU can meet reliability target. In this paper, so far the reliability results of AEMU are presented.
김길동(Gil-Dong Kim),신정렬(Jeong-Ryol Shin),이우동(Woo-Dong Lee),박현준(Hyun-Jun Park),김희중(Hee-Jung Kim) 한국철도학회 2004 철도저널 Vol.7 No.3
This paper describes a low-cost single-phase active power filler, which consists of a half-bridge PWM inverter with a simple control circuit. In order to verify the performance of proposed active power filter, many computer simulations with EMTP codes and experimental works with a hardware prototype were done. Both results confirm that the proposed active power filter shows excellent performance to eliminate the harmonics generated in the single-phase non-linear load. The active power filter has advantage of low implementation cost and compact size, using a half-bridge inverter and a simple control circuit with only one current sensor. So, it can be fabricated as a plug-in type. This paper shows the necessity and a good possibility to apply such advantage to the electric railway system
김길동(Gil dong Kim),오세찬(Sehchan Oh),이장무(Changmu Lee),이한민(Hanmin Lee),박현준(Hyunjune Park) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.11
Due to the demand for high-output motors in the limited space between the wheels in an electric train, self-ventilating traction motors have been used for many years. periodical disassembly maintenance is necessary to remove the small Quantities of dust that enter the motor from the open-air ventilation. Reducing this burden, as well as increasing efficiency and reducing noise, would benefit the next generation of motors To address these needs, KRRI is developing a fully enclosed type traction motor, a fully enclosed type traction motor with outer fans, a high-efficiency permanent-magnet synchronous motor and a direct-drive motor(DDM)as traction motors for the next generation of trams.
김길동(Gil-Dong Kim),이한민,오세찬(Seh-Chan Oh),정의진(Eui-Jin Joung) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
최근 철도 차량의 대부분은 인버터 제어에 의한 유도전동기를 채택하여, 많은 사용상의 이점을 내고 있다. 하지만 이 인버터 제어는 장치의 소형 경량화, 저비용화의 관점에서, 1대의 인버터로 복수의 유도 전동기를 구동하는 방식이 주류이다. 최근, 고성능화로 영구자석을 사용한 동기전동기는 산업용, 전기 자동차용과 모든 분야에서 주목을 받아, 소형 · 경량 · 고효율”의 특징을 살려서 유도전동기를 대신하여 고성능 모터의 주역이 되고 있다. 본 논문에서는 철도 차량용 주전동기로 이 영구자석 직접구동전동기를 개발하여 기존 유도 전동기와 비교하여 성능을 평가 하였다. 실험을 통해 영구자석 직접구동전동기는 기존 유도전동기에 비해 고 효율화, 유지보수성 향상 등의 효과가 있음을 알 수 있다.
김길동(Kim Gil Dong),이한민(Lee Han Min),박성환(Park Sung Hwan) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
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 algorithm about bogie unit braking is proposed and verified.
김길동(Gil-Dong Kim),한영재(Young-Jae Han),박현준(Hyun-Jun Park),성낙규(Nark-Kuy Sung) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
In this paper, we studies VVVF inverter for 1C4M propulsion system of urban rail traction. This inverter is consisted of inverter stack, DB unit, and control unit. To prove performance of inverter carry out main track test. From test for VVVF inverter verifies excellent performance.
김길동(Kim Gil Dong),이한민(Lee Han Min),오세찬(Oh Seh Chan),이장무(Lee Chang Mu),박성혁(Park Sung Hyuk) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
It is one of the most effective methods for improving the performance of electric railway vehicles to make better the wheel-rail adhesion characteristics. To study adhesion characteristic is to develop the equivalent reduction machine to experiment on the adhesion system. The experiment system makes it possible to change the wheel-rail adhesion force with various adhesion parameters, and therewith to test the adhesion control system with the reduction machine in a laboratory. In this paper, for improving adhesion performance shows actually control methods.