http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Min-Sub Lee(이민섭),Saha Subrato(스브라토 사하),Hyo-keun Jeon(전효근),Jeong-Tae Song(송정태),Yun-Hyun Cho(조윤현) 대한전기학회 2014 대한전기학회 학술대회 논문집 Vol.2014 No.10
본 논문에서는 3.7㎾ 3상 2극 유도기동형 동기전동기(LSPM)의 회전자 구조 설계 및 특성에 관하여 연구하였다. LSPM 회전자의 자석슬롯형상을 d축 인덕턴스(Ld)와 q축 인덕턴스(Lq)에 따라 즉, 돌극비를 고려하여 여러 타입으로 설계 하였고 그에 따른 특성을 반응표면법(RSM)과 유한요소해석법(FEM)을 통해 비교 분석 하였다. 이 타입별 비교 분석을 통해 효울과 역율이 향상된 회전자 구조 형상을 얻을 수 있었다.
1200V 50A급 컨버터 인버터 일체형 12-스위치 저 손실 지능형 전력모듈
이민섭(Min-Sub Lee),송준호(Jun-Ho Song),이준배(Jun-Bae Lee),정대웅(Dae-Woong Chung),이남원(Nam-Won Lee) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
본 논문에서는 1200V, 50A급의 컨버터 인버터 일체형 12-스위치 저 손실 지능형 전력모듈을 소개한다. 게이트 구동회로, 보호회로, IGBT 모듈을 통합한 이 전력모듈은 최적의 게이트 구동회로, 시스템 고밀도화 그리고 인피니언의 트렌치 필드스톱2 IGBT와 FRD를 사용한 높은 효율의 컨버터와 인버터 일체형으로 구현하였다. 본 논문을 통해 높은 파워가 요구되는 가전기기, 산업용 인버터의 애플리케이션에 적합하게 설계된 전력모듈에 대한 소개와 함께 그 특징 및 시스템 구성을 위한 고려사항에 대하여 기술하였다.
비정형 구조물 해석을 위한 3차원 곡선형 보요소의 개발
정성진,이민섭,박세희,Jung, Sung-Jin,Lee, Min-Sub,Park, Se-Hee 대한건축학회 2011 대한건축학회논문집 Vol.27 No.8
Recently, a lot of free form buildings, which have irregular structural shape, are constructed frequently in our country. In such buildings, there are many curved beams and columns which have non-prismatic sections occasionally. But, many computer programs commonly used in practice like SAP2000 do not any finite elements available for the structural analysis including these curved members. So, many structural engineers necessarily use the segmented straight-line beam elements for their curved frame members. It makes the inconsistency between analysis model and real structure. Therefore, in this study, a theoretical background of a general curved beam element describing the bent frame member is studied first, then some formulas available in computer programming are derived on the basis of the theoretical background. A computer program, named sNs, was developed using these formulas, and analysis results by sNs are compared with those by some commercial programs and theory.
4변형 평면요소를 컴퓨터 프로그램으로 구현하기 위한 알고리즘
정성진,이민섭,박세희,Jung, Sung-Jin,Lee, Min-Sub,Park, Se-Hee 대한건축학회 2012 대한건축학회논문집 Vol.28 No.4
Many types of quadrilateral plane element are studied in literatures on FEA and implemented in various computer programs. Field engineers use these elements in their new projects according to the manual which is supplied with the program purchased, such as SAP2000, MIDAS, and so on. However, since these computer programs only present the concept and the way of using the commands and give different results in the same structural analysis model according to the element provided by each program, it is difficult to understand the basic theories and differences between these elements. So, it is necessary to establish the basic theories and the programming techniques in common use to consider these elements. In this study, basic theories for the consideration of quadrilateral plane elements with several degrees of freedom are studied first, where some of possible methods are investigated. On the basis of these theoretical backgrounds, an algorithm available in computer program is derived, which calculates the stiffness matrix of these elements in one process, and then a computer program(sNs) is developed based on the theory and algorithm studied. Lastly, some examples using these computerized elements are performed and the analysis results are compared with other commercial-use structural analysis programs used in field engineering for the verification of its fitness and validity.
하중종속 리츠벡터를 이용한 고유치해석용 컴퓨터프로그램의 개발
정성진(Jung, Sung-Jin),이민섭(Lee, Min-Sub) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.12
The use of well selected Ritz vectors is shown to be very efficient in the dynamic analysis of large structures using modal superposition method. However, Ritz vectors are mostly used in the dynamic analysis of civil structures, they are rarely used in the dynamic analysis of building structures. Consideration of the trend toward larger building structures, it is necessary to study on the use of Ritz vectors in the building structures. Therefore, in this study, methods for the computer program development based on Ritz vector generation algorithm are investigated first, then some algorithms available in case of a computer program development are studied on the basis of investigated methods. On the basis of studied algorithms, a computer program sNs is developed, the results by this program is compared with the results by a program SAP2000 and theory for the verification of their accuracy.