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한영재(Young-Jae Han),김길동(Gil-Dong Kim),박현준(Hyun-June Park),이은규(Eun-Kyu Lee),한경희(Kyoung-Hee Han) 한국철도학회 2000 철도저널 Vol.3 No.1
In this paper, the IGBT VVVF inverter for IC4M propulsion system of railway traction is studied. The inverter is consisted of IGBT stacks, a DB unit, and a control unit. The test results of the combined system is given, which shows an excellent performance of the overall system.
김길동,한영재,박현준,이사영,Kim, Gil-Dong,Han, Young-Jae,Park, Hyun-June,Lee, Sa-young 한국철도학회 1999 한국철도학회논문집 Vol.2 No.1
This purpose of this paper is to perform the readhesion control algorithm of the urban railway traction. A study on readhesion control algorithm is done for the adhesion system. This system has all characteristics of the voltage source converter by a process ability to regenerate power. The traction motor is controlled by IGBT inverter. The test equipment composes traction motor, torque-meter, clutch, and a tubular type of interia mass.
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.
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.