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김봉섭(Kim Bong-Seup),김동성(Kim Dong-Sung),김창현(Kim Chang-Hyun) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Urban maglev vehicle is scheduled to be inaugurated in 2013, in Incheon international airport, Korea, and is attracting public attention. Korea's Urban Maglev Program started in 2006, and the second developing stage of the project is in progress now, as for June 2009. The maglev train is a high-tech and environmentally friendly transportation system. The first maglev was commercialized and is in service in Japan. Aiming for the commercialization and finding a new market, Korean government also drives the development of the urban maglev with pure domestic technology. During the period of the development, it is mandatory to pass the performance tests reflecting Korean railway safety and urban railway regulations before the vehicle is manufactured and commercialized. Therefore, appropriate performance test procedures should be devised, and the design specifications and performance evaluation should be verified through the related test suite under the supervision of an official testing organization. Performance evaluation is necessary procedure to validate the reliability and safety of the developed maglev vehicle before commercial service. Regarding to the above project, the list of required tests for 'Test and Evaluation of Urban Maglev', components of the maglev vehicle, a prototype of the maglev (including a trial run on a test line), and a plan about test runs on the demonstration line will be introduced in this paper.
김봉섭(Kim Bong-Seup),김영중(Kim Young-Jung),박도영(Park Do-Young) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
자기부상열차는 직류 전원을 사용하여 부상용 전자석으로 주행선로와 10㎜ 내외의 부상상태를 유지하면서 교류 전원을 이용한 선형 유도전동기로 추진하는 방식이다. 본 논문에서는 실차 모델의 자기부상열차에 대한 전자파를 측정하여 국내 전자파인체보호기준 및 세계 권고기준과 비교 분석하였다.
김봉섭(Bong-Seup Kim),고준균(Joon-Kyun Koh),박도영(Do-Young Park),강병관(Byung-Gwan Kang) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
This paper introduces the performance test of the prototype vehicle which will be in operation for Urban Maglev Program. While common trains with steel wheels use rotary induction motors for propulsion maglev trains gain thrust force from linear induction motors maintaining the constant airgap with levitation electromagnets. Therefore not only the behavior of the linear induction motor should be well understood but also the way of propulsion that minimizes its effect on the levitation system should be took into account. Performance test procedures of maglev trains are proposed and carried out and the characteristics of acceleration and deceleration are verified to agree with the design criteria. Tests are mainly performed on the linear section of the test line and the driving characteristics on the section with a 6‰ incline are examined additionally. As a result the performance of the prototype vehicle in the reverse operation can satisfy the requirement about the acceleration and deceleration 4.0m/s2. And the design modifications of the commercial vehicle and the performance specifications required on the demonstration line are investigated.
EM-PM 복합식 자기부상열차의 Zero-Power 부상 제어
김창현(Kim Chang-Hyun),김봉섭(Kim Bong-Seup),김동성(Kim Dong-Sung) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Minimizing driving power consumption is crucial for a magnetically levitated (maglev) vehicle because it has batteries or noncontact power source. In case of the maglev vehicle using electromagnet/permanent (EM-PM) hybrid systems, the power consumption can be reduced when the total weight is levitated by the PM and the EM is controlled to compensate the instability due to weight variation or external disturbance. This paper deals with a zero-power levitation control method for an EM-PM hybrid maglev vehicle. First, a state feedback controller to maintain a constant gap is introduced. Next, the zero-power levitation control, which reduces the driving current to zero, is proposed by modifying the state feedback controller. In the proposed method, the current controller is supposed to be included in the target system and the zero-power control is implemented based on the command voltage input to the current controller. The performance of the proposed controller is verified with simulations using a hybrid maglev testing system.
김인근(Kim In-Kun),이상록(Lee Sang-Rok),조흥제(Cho Hung-Je),유문환(Yoo Mun-Hwan),김봉섭(Kim Bong-Seup),성호경(Sung Ho-Kyung),이종민(Lee Jong Min) 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-
The status of the maglev development in Korea is reported along with related commercial application prospects. The 1st test vehicle, Urban Transit Maglev-01, is in the running tests, and is now entered a new phase in which a new vehicle be built within 3 years. Eventhough Korean maglev teams made remarkable progress for 10 years since 1990, major portion of the works to prove safety and reliability remains for the future. Many LRT routes are being planned by the Korean government and UTM will find its commercial application if we can prove many merits of the maglev system plus its reliability. But the commercial application efforts did not produce any outcome at the time because the customer wasn"t totally satisfied with the new system and also, they decided it wasn"t urgently needed.
김기정(Ki-Jung Kim),신현재(Hyun-Jae Shin),한형석(Hyung-Suk Han),김봉섭(Bong-Seup Kim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Curving negotiation performance of EMS-type urban Maglev vehicles using a U-shaped electromagnet must be considered, because an urban guideway may have some curves with short radii. This article deals with the analysis on adopting steering bogie concept in order to diminish the guidance force on curve guideway, since guidance force is passively determined by the levitaion force. By doing so, the use of a full vehicle multibody dynamic model which is applied steering mechanism is proposed, and is applied to the evaluation of curving performance. The results are validated extensively by comparison with real test of Maglev running on test track at KIMM.
김창현(Chang-Hyun Kim),이종민(Jong-Min Lee),김봉섭(Bong-Seup Kim),한형석(Hyung-Suk Han) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Through Korean Urban Maglev Program started in 2006 an urban maglev train was developed and the demonstration line is under construction as of now in 2011. The target speed of the developed maglev train is 110km/h and the core technologies for super speed maglev trains over 500km/h are being studied. The propulsion and levitation systems of the super speed maglev train under consideration consist of linear synchronous motors (LSM) and levitation electromagnets which also act as a mover of LSM. In addition guidance electromagnets are used to ensure stable running on curved tracks during super speed operation. The levitation and guidance control is focused on in this paper. For experimental purpose a small maglev train is being manufactured and its levitation and guidance controller is studied. The main task of the controller is to maintain the gap between the corresponding electromagnet and the guideway constantly. In general measurements of the gap acceleration and current and so on are utilized and the gap control is implemented independently for each electromagnet. In this paper the levitation and guidance system is modelled considering mechanical interactions and the levitation and guidance controller is proposed based on this model. The developed controller is verified by various simulations using MATLAB/Simulink.