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양원진(Yang Won-Jin),박찬배(Park Chan-Bae),이형우(Lee Hyung-Woo),권삼영(Kwon Sam-Young),박현준(Park Hyun-June),원충연(Won Chung-Yeun) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
A linear induction motor for urban railway transit is accompanied with the end-effect and large air-gap comparing with a rotary induction motor. These cause amount of difference between simulation results and experiments. In order to figure out the difference, experiments based on a real-scale test bed are indispensable, however building a test-line and a test vehicle is so difficult that authors are going to make a small-scale model and simulate it for comparison. In this paper, A rotary-type small-scale model of a linear induction motor is designed. Thrust and normal force of the model have been analyzed with the variation of frequency and speed by using a Finite Element Method(FEM).
하이브리드 자동차용 저전압 DC/DC 컨버터 제어 방법
문정송(Jung-Song Moon),이정효(Jung-Hyo Lee),이택기(Taeck-Kie Lee),원충연(Chung-Yeun Won) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
Low Voltage DC/DC Converter(LDC) is the power conversion unit for suppling the power to the auxiliary battery and the electric loads on vehicle. LDC has the capabilities of stability and efficient control method so that the electric loads are fully functional. This paper proposes a control method based on one PI-controller and verifies the stable performance from simulation.
3상 SRM 구동용 4-스위치 인버터의 PWM 제어 알고리즘
정균하(Kyun-Ha Jeong),윤용호(Yong-Ho Yoon),김영란(Young-Ran Kim),이병국(Byoung-Kuk Lee),원충연(Chung-Yeun Won) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
This paper suggests a new type of 4-switch inverter for switched reluctance motor drives. 4-switch Inverter topology is studied to provide a possibility for the realization of cost of 3-phase SRM drive system. We used Y-connection and two-phase exciting method. For effective utilization of the developed system, a direct current controlled PWM scheme is designed and implemented to produce the desired dynamic. We solve to balance the neutral point of Y-connection by the direct current controlled PWM and examine the performance of proposed system. With the algorithm and developed control scheme, is expected that the proposed system can be widely used in commercial applications with a reduced system cost.