• Proceedings of the KIEE Conference
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• 2003.07b
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• pp.1291-1293
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• 2003

The korean high speed train (350km/h), composed of 7cars that are 2 power cars, 2 motorized car and 3 trailer cars, has been developed and is under on-line test. To verify the design requirements about the functions and traction performances of this train, KRRI(Korea Railroad Research Institute) decided to evaluate traction performances of the train during on-line test. For this purpose, such as torque, velocity, voltage and current, must be measured. KRRI has developed the measurement system that can be measured vast and various signals effectively. In this paper, we introduce traction performances of korean high speed train. The traction measurement items are focused on the verification of motor block performances. Motor block are consist of 2 motor. For this test, we verified traction performances of korean high speed train.

• Proceedings of the KIEE Conference
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• 2003.07b
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• pp.1108-1110
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• 2003

The control method of programmable dynamometer for overall test of machine is to load the reference torque which is computed from torque transducer into motor under test. But the torque information detected from torque transducer have a lot of noise when the load torque of meter is a small quantity or changing. Thus, torque transducer must have a low pass filter to detect a definite torque information. But The torque delay generated by filter with torque transducer occur a torque trouble for meter torque of programmable dynamometer. The proposed system improved the problem of the torque measuring delay with torque transducer, and the load torque is estimated by the minimal order state observer based on the torque component of the vector control induction moter. Therefore, the torque controller is not affected by a load torque disturbance.

• Proceedings of the KIEE Conference
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• 1998.11a
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• pp.341-343
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• 1998

Hitherto, train schedules are made by several human experts and the scheduling is very long and tedious job. Moreover those results are not accepted as the optimal solution. The purpose of this research is the finding of optimal methodology and useful constraints for locomotive scheduling. For these purposes, the interactive simulation program for train linking schedule is developed. Some constraints and technique for train linking scheduling is able to be edited or modified by various interactive windows. The constraints, rules and methodology for scheduling can be analyzed and also obtained useful schedule results by using this program.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2007.06a
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• pp.813-814
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• 2007

• Proceedings of the KIEE Conference
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• 2006.04b
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• pp.298-300
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• 2006

The changeable set system need to be developed to devoid a traffic congestion for rush hour. We will apply the changeable set system to solve this problems. The cost-effectiveness is reviewed when we apply this system on Korean urban transit system.

• Proceedings of the KIEE Conference
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• 2003.10b
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• pp.296-299
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• 2003

주어진 운행횟수에서 가능한 많은 승객을 최대한 빠른 시간에 정해진 목적지까지 이동시킬 수 있는 2층 열차의 기본 설계에 필요한 차량내 장치, 신호시스템 및 급전계통에 대하여 전기관련 시스템의 주요 사양을 검토하여 향후 차량을 본격적으로 설계시 기본 자료로 활용할 수 있도록 하였다.

• Proceedings of the KIEE Conference
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• 2001.04a
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• pp.375-377
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• 2001

최근 국내에서는 다양한 대중교통수단의 요구로 경량전철의 건설이 가시화되면서 경량전철의 안전운전과 운영경비 절감에 필요한 새로운 개념의 열차제어장치에 대한 기술개발을 철도선진국은 물론 우리나라에서도 추진중에 있다. 이에 본 논문에서는 철도연에서 2000년까지 추진한 경량전철의 무인운전 제어기술에 관하여 소개하고자 한다.

• Proceedings of the KSR Conference
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• 2006.05b
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• pp.661-666
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• 2006

• Proceedings of the KIEE Conference
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• summer
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• pp.1394-1396
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• 2004

Study passing method of AC/DC Dead ection of urban train and operation time of related device. And search the reason for operation of MCB(Main Curcuit Breaker) and find the safe method to pass dead section.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.10a
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• pp.589-590
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• 2006