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컨테이너 검색기 이송대차 추진용 선형 유도전동기의 2차측 리액션플레이트 재질에 따른 특성 연구
정재훈(Jae-Hoon Jeong),최장영(Jang-Young Choi),성소영(So-Young Sung),박종원(Jong-Won Park),임재원(Jaewon Lim) 대한전기학회 2016 전기학회논문지 Vol.65 No.1
This paper presents the analysis of the analysis of thrust characteristics of linear induction motors(LIMs) according to secondary reaction plate. LIMs are well known as high speed transport systems, which can obtain thrust directly without gears and links, or auxiliary mechanisms. A simple structure, easy maintenance, and less environmental pollution are advantages of LIMs. In transport systems using LIMs, the secondary reaction plate is an important design factor, because it has considerable impact on the cost of the railway as well as the performance of the LIMs. This paper deals analyzed the characteristics of linear induction motor used for moving the vehicle of container scanner. Thrust, efficiency and load characteristic were interpreted with FEM regarding two models whose material of secondary reaction plate was copper and aluminum. It suggested the interpretation of thrust, efficiency and power factor characteristic along slip and compared the operation ability of linear induction motor through characteristics analysis along the load.
임재원(Lim Jaewon),서장호(Seo Jang-Ho),이상엽(Lee Sang-Yub),정현교(Jung Hyun-Kyo) 한국철도학회 2009 한국철도학회 세미나자료 Vol.2009 No.5
Recently, Interior Permanent Magnet Machine(IPM) is widely used for traction motor in the high speed train. Due to the high efficiency and high power density of the IPM, it has lots of heat sources such as iron loss and copper loss. These heat sources can cause the demagnetization of permanent magnet, losses in output power and even irreversible defect of the IPM. To prevent the power loss caused by heat sources, the accurate thermal analysis has to be carried out. For the thermal analysis of the IPM, the thermal network is designed for this traction motor. The thermal analysis has executed at rated speed operation. The result of thermal network analysis can be used for the IPM design process.
송풍량에 따른 매입형 영구자석 전동기 열등가 회로 해석
임재원(Lim Jaewon),서장호(Seo Jang-Ho),정현교(Jung Hyun-Kyo) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Recently, Interior Permanent Magnet Synchronous Motor(IPMSM) is widely used for traction motor in the high speed train because of its high efficiency, high power density and wide constant power operation range. Due to the high power density of IPMSM, it has lots of heat sources such as iron loss, copper loss etc. These heat sources can cause the permanent demagnetiazation of magnet characteristic, increasing copper loss and power loss. Hence, the cooling system for generated heat sources can be the important issue. Various cooling system can be considered. In this paper, however, forced air cooling system is analysed. Thermal network is designed for this traction motor and thermal distribution of IPMSM is analysed the under various flow rate.
임재원(Jaewon Lim),정재훈(Jaehoon Jung),박도영(Doh-young Park) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
자기부상열차는 뛰어난 승차감과 비 접촉 추진 방식에 따른 분진발생의 저감, 저소음의 특징 등에 차세대 교통수단으로 많은 관심을 받아왔다. 특히 도시형 자기부상열차의 실용화에 이어 초고속, 중고속 영역의 자기부상연구도 활발하게 진행되고 있다. 중고속 자기부상열차를 구현하는데 있어서 도시형 자기부상열차와 차별화 되는 점은 도시형자기부상열차에서 수동적으로 제어되었던 측 방향 변위 제어 시스템이라 할 수 있다. 열차가 고속화 될수록 곡선구간 주행 및 측면 외란에 의해 측방향 변위가 더 많이 발생하게 되고 이는 부상력 저하와 같은 외란으로 작용하여 부상안정성에도 직접적으로 영향을 미치게 된다. 본 논문에서는 중고속 자기부상열차용 안내 시스템을 제안하며 안내 시스템과 부상 시스템을 동시에 적용, 해석하여 자기적인 상호 작용을 검토하고 부상 시스템과 결합한 안내 제어 가능성을 검토하고자 한다. Maglev vehicle has received lots of attention as next generation transportation due to superb driving comfort and non-contact characteristic. Researches on super high and medium high speed maglev train have been carried out after commercialization project of urban maglev transit. The major distinction of urban maglev transit and medium speed maglev is the passive lateral guidance system. The higher speed train receives the more side disturbance and displacement. This paper deals the lateral guidance system of medium high speed maglev vehicle. The interactions of levitation and guidance system with guidance control feasibility are also presented.
Phase Set shift를 이용한 PMLSM의 코깅력 저감법 연구
임재원(Jaewon Lim),김민재(Min-Jae Kim),정현교(Hyun-Kyo Jung) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.4
본 논문에서는 Phase Set Shift (PSS)를 이용한 영구자석형 선형 전동기에서의 코깅력의 저감에 대해 기술한다. Phase Set Shift는 코깅력의 주기성을 이용하여 코깅력을 저감하는 방법으로 각 phase set이 갖는 코깅력을 위상차이를 주어 서로의 코깅력을 상쇄하여 총 코깅력을 저감하는 방법이다. 선형 전동기의 코깅력의 해석을 위해서 유한요소법을 이용하였으며 코깅력의 주기성에 대한 연구를 위해 푸리에 급수를 이용하였다.
고속 전철용 매입형 영구자석 전동기의 풍량에 따른 열해석
임재원(Lim Jaewon),이경표(Yi Kyung-Pyo),정현교(Jung Hyun-Kyo) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
Recently, Interior Permanent Magnet Machine(IPM) is widely used for traction motor in the high speed train. Higher efficiency and power density are the superb performance of IPM. Due to the high power density, however, it has lots of heat source which are originated from copper losses and core losses. These heat source can cause the permanent demagnetization in magnet and the loss of torque and power. To prevent the undesirable loss in the traction motor, the accurate loss calculation and the thermal analysis should be preceded. Especially, the end-winding area and permanent magnet area should be examined correctly. In this paper, the electromagnetic fields were examined by finite element method to analyze the electromagnetic properties of IPM and thermal analysis are carried out with pre-calculated losses. To validate the analysis result, the experiment set with forced air cooling system is manufactured.