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다목적 화학공정 동적모사기 개발 1 . 시스템의 일반적 개요 및 모사전략
이강주,윤인섭 ( Kang Ju Lee,En Sup Yoon ) 한국화학공학회 1991 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.29 No.2
A simulator structure, integration strategy, input language and simulation technique are presented in order to develop a general purpose chemical process dynamic simulator, and a SCI(Sequential Clustered Integration)-based prototype simulator is implemented. The SCI is a general form of SMI(Sequential Modular Integration) but has better performance than SMI and SEI(Simultaneous Equation Integration) with respect to computational efficiency and flexibility of applications. The SCI approach is capable of introducing various mode of coupling of the process units, actually, from SMI to SEI within a single simulator structure. Examples are presented to study the clustering criteria which have significant influence on the performance of SCI and to illustrate the system performance.
입력전류 주입을 이용한 PWM 컨버터의 직류 커패시터 용량 추정
이강주(Kang-Ju Lee),이동춘(Dong-Choon Lee),석줄기(Jul-Ki Seok) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
In this paper, a novel on-line dc capacitance estimation method for the PWM converter is proposed At no load, Input current at a low frequency is injected, which causes dc voltage ripple with the ac voltage and current ripple components of the dc side, the capacitance can be calculated Experimental result shows that the estimation error is less than 2%.
이강주(Kang-Ju Lee),구성영(Seoung-Young Koo),김동욱(Dong-Wook Kim) 전력전자학회 2009 전력전자학술대회 논문집 Vol.2009 No.1
본 논문은 현대중공업에서 추진하고 있는 1.65MW급 풍력터빈에 적용된 이중여자 권선형 유도발전기 제어를 위한 핵심장치인 전력변환 장치 기술개발에 대해 기술한다. 1.65MW DFIG 제어를 위해 Back-to-back IGBT Converter를 설계하고, 방열을 위해 수냉식 구조를 갖는 전력스택을 채택하였으며, 풍력터빈에 의해 발전된 전력을 계통에 연계하기 위한 제반 기술과 Grid-code에 대응하기 위한 제어알고리즘등이 반영된다.
이강주(Kang Ju Lee),한경택(Kyung Taek Han),윤인섭(En Sup Yoon) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
This paper presents the simulation architecture and strategy for dynamic simulation of chemical process and describes key features of developed dynamic simulation system, MOSA (Multi-Objective Simulation Architecture). A plant structure may be partioned into several strong coupling units, called cluster. If this cluster is solved simultaneously, it is possible to simulate whole plant without introducing convergence problem of tear streams. In this study, a flexible modular approach based on clusters was proposed as a promising architecture for dynamic chemical process simulator.