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미지의 주행저항을 고려한 도시철도차량 ATO의 속도추종 및 정밀정차 제어
변윤섭(Byun Yeun-Sub),한성호(Han Seong-Ho),김길동(Kim Gil-Dong),백광선(Baik Kwang-Sun),한영재(Han Young-Jae) 한국철도학회 1999 한국철도학회 학술발표대회논문집 Vol.- No.-
An automatic train operation(ATO) system executes the operation of constant speed travelling and fixed point parking by using microprocessors instead of driver"s manual operation. This paper describes the mathematical model for the train considering unknown disturbances which consist of start resistance, travelling resistance, slope resistance, curve resistance, and so on. The speed controller of ATO system is designed by considering the disturbances. The simulation is executed to verify the speed control and fixed point parking performance and to compare its performance with that of a PID-type ATO control system under disturbances. Simulation results show that the control performance of gain scheduled control scheme for ATO system is better than that of the conventional PID controller.
이병송(Byung-Song Lee),김길동(Gil-Dong Kim),변윤섭(Yeun-Sub Byun),한영재(Young-Jae Han),박현준(Hyun-June Park) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
A new current controlled PWM technique with NPC structure is proposed in this paper. A current controlled PWM technique with neutral- point-clamped pulse-width modulation inverter composed of main switching devices which operates as switch for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential is described. The proposed current controller has a first and second current band. The switching pattern will be made by the first current band. According to the second current band, the output state of the switching pattern is changed into positive and negative state. This inverter output contains less harmonic content and lower switching frequency than that of conventional current controlled PWM technique at the same current limit. Two inverters are compared analytically and the performance is investigated by the computer simulation.
김길동(Gil-Dong Kim),한영재(Hyun-June Park),변윤섭(Young-Jae Han),박현준(Woo-Dong Lee),이우동(Yeun-Sup Byun) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
In this pager, we studies IGBT VVVF inverter for 1 C4M propulsion system of railway traction, This Inverter is consisted in Inverter stack, DB unit, and control unit To prove performance of inverter carry out combine test This test verifies that performance of Inverter is excellent.