• Proceedings of the KIEE Conference
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• 2004.04a
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• pp.232-234
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• 2004

Tilting train has been developed to increase the operational speed of the trains on conventional lines which have many curves. This train are tilted at curves to compensate for unbalanced carbody centrifugal acceleration to a greater extent than compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves. This paper developed tilting control simulator to evaluate tilting control performance of TTX(tilting train express) with maximum operation speed 180 km/h.

• Proceedings of the KIEE Conference
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• 2004.04a
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• pp.290-292
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• 2004

Tilting train has been developed to increase the operational speed of the trains on conventional lines which have many curves. This train are tilted at curves to compensate for unbalanced carbody centrifugal acceleration to a greater extent than compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves. This paper developed PDM(product data management) to make a system engineering of TTX(tilting train express) with maximum operation speed 180 km/h.

• Proceedings of the KIEE Conference
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• 2004.04a
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• pp.287-289
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• 2004

Tilting train has been developed to increase the operational speed of the trains on conventional lines which have many curves. This train are tilted at curves to compensate for unbalanced carbody centrifugal acceleration to a greater extent than compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves. This paper investigated train formation of TTX(tilting train express) with maximum operation speed 180 km/h.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1201-1208
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• 2008

Ubiquotuous technology should be adopted in railroad business to provide passenger's security and convenience. In this project, IT and smart sensor technologies are reviewed, benchmarked, designed, and implemented. The target system is the next generation high speed train to be developed and operated in Korea with the maximum speed of 400km/h. Wireless sensor network with smart sensors is implemented around a train car. PC-like IT terminal will be designed and implemented so an individual passenger can use it to do information retrieval through the Internet, personal data processing, the e-learning, shopping on the railroad, and so on. These provision will give comfort, convenience, and safety of a passenger during his/her trip.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1188-1194
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• 2008

To cope with the demagnetization risk of permanent magnets used in Interior Permanent Magnet Synchronous Motors(IPMSM), an accurate iron analysis and thermal analysis are very important. In this research, to calculate thermal increment of IPMSM for high-speed traction motor, we will extract losses of IPMSM considering the condition of field weakening control. Then we will input the calculated losses such as iron loss and copper loss as the thermal sources. Based on magnetic filed and thermal analysis, we will support the design of IPMSM for high-speed train.

• Proceedings of the KSME Conference
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• 2001.06b
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• pp.204-209
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• 2001

The more sophisticated patterns of propagation model is presented in this paper, which includes three different source characteristics (spherical, cosine and dipole). The spherical, cosine and dipole radiation characteristics compared, and sound event level and the maximum sound level are calculated by experiment and calculation. It is shown that patterns of propagation have dipole characteristics for low speed range (below about 150Km/h) at electric multiple system. We know that push-pull high speed system has cosine characteristics of noise propagation at low speed range (below about 200Km/h).

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.1282-1288
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• 2006

Upon demands for the requests of rapid, safe and comfort transit, the proven high speed bogie having not only high-quality but also good running performance is required by customer all over the railway vehicle for narrow gauge. Hereupon, the running test on roller testing rig for developed semi-high speed bogie for narrow gauge was carried out in order to verify the running performance and safety. The aim of the test is to assess the dynamic behaviour of the bogie on straight track including the running stability, ride quality, modal frequency and dynamic response.

• Proceedings of the KIEE Conference
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• summer
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• pp.1325-1327
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• 2004

인구가 증가하면서 인간의 생활활동 범위가 증가되었고 이에 따라 운송시스템에 대한 수요가 크게 증대되고 있다. 그러나 물류 이동에 필요한 여러 가지 제반시설은 이를 충족시키지 못하고 있으며, 이로 인하여 현재 국내의 물류수송효율은 최악의 상황에 직면해있다. 이로써 대용량의 수송능력을 담당하는 철도차량 운송 시스템에 대한 수요가 급증하게 되었다. 따라서 이에 대비하고자 많은 신규 노선을 계획하고, 이와 함께 신설되는 노선에 대해서는 시스템 운영 효율의 극대화를 위해 노선별로 고속전철과 지하철, 경전철, 틸팅차량, 그리고 자기부상열차 시스템 등 여러 가지 방식이 검토 중에 있으며 차량에 가장 적합한 추진시스템을 설계하는 것이 차량의 성능에 크게 향상시킬 수 있다.

• Proceedings of the KIEE Conference
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• summer
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• pp.1460-1462
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• 2004

기존노선을 이용한 고속화 신기술 개발사업 과제를 수행하여 중장거리 및 도시간의 교통해소를 위해 중고속 철도차량을 개발하여 최고속도 180km/h의 속도로 운행할수 있는 차량의 개발에 있어 핵심 전장품인 열차제어진단장치를 국산화하여 수입대처효과 및 기술개발에 기여하고 있다.

• Proceedings of the KIEE Conference
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• 2005.07b
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• pp.1559-1561
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• 2005

기존노선을 이용한 고속화 신기술 개발사업 과제를 수행하여 중장거리 및 도시간의 교통해소를 위해 중고속 철도차량을 개발하여 최고속도 180km/h의 속도로 운행할수 있는 차량의 개발에 있어 핵심 전장품인 열차제어진단장치를 국산화하여 수입대처효과 및 기술개발에 기여하고 있다.