• Proceedings of the KIPE Conference
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• 2019.11a
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• pp.164-165
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• 2019

본 논문은 3상 동기발전기의 과도 특성을 분석하기 위해 MATLAB/ SIMULINK를 이용하여 모델링하였으며 동기발전기 출력단의 개방 및 3상 단락 회로 조건에 따른 특성곡선을 분석하였다. 정상상태, 과도상태 및 차과도상태 구간에서 고정자 권선, 회전자 권선 및 댐퍼 권선 등이 갖는 자기 인덕턴스 및 상호 인덕턴스 특성 관계와 자속 변화특성 등을 수학적 모델 기반의 소신호 모델링을 통해 3상 동기발전기를 등가적으로 모델링하였다. 시뮬레이션을 통해 얻은 값에 의해 과도상태와 차과도상태의 모터 데이터를 분석하고 단락상태의 시간 상수를 계산하여, 동기발전기의 3상 단락 조건에서 초기 과도 및 과도상태의 특성을 검증하였다.최종적으로, 이론적 공식에 의해 계산 된 동기 발전기의 파라미터는 시뮬레이션 결과와 일치하며 오차는 2 % 범위 내에 있다.

• Proceedings of the KIEE Conference
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• 2000.07b
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• pp.1190-1192
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• 2000

전동기의 속도 및 토크제어 운전시 인버터 제어 방식으로서 최대 효과적인 전력을 사용할 수 있으며 저차 고조파를 저감시키는데 효율적인 스위칭방식으로 공간전압벡터 변조(SVPWM)를 사용하고 있다. 따라서 많은 논문들이 SVPWM의 방식을 이용한 시뮬레이션을 하게 되는데, 본 논문에서는 최근 시뮬레이션에 많이 사용되고 있는 Matlab/Simulink를 이용하여 SVPWM 인버터를 구현, 이를 유도전동기 구동시스템에 적용하여 속도 및 토오크 응답, 상전류 파형을 시뮬레이션 결과를 제시하여 본 논문에서 제안한 SVPWM 인버터의 블록 모델의 유효성을 보이고 있다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.06a
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• pp.181-182
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• 2009

• Journal of the Korean Institute of Intelligent Systems
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• v.23 no.6
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• pp.511-518
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• 2013

To implement an automatic picking system (APS) in distribution center with high precision and high dynamics, this paper presents a design of a linear induction motor (LIM) drive and robust position controller based on integral variable structure control (IVSC) scheme. The force disturbance as well as the mechanical parameter variation such as the mass and friction coefficient gives a direct influence on the position control performance of APS. To guarantee a robust control performance in the presence of such uncertainty, a robust position controller is designed. A Simulink library is developed for the LIM model from the state equation. Through this model and comparative simulation based on Matlab - Simulink, it is proved that the proposed scheme has a robust control nature and is most suitable for APS.

• Journal of the Korean Society of Propulsion Engineers
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• v.5 no.2
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• pp.44-50
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• 2001

After modeling an aircraft turboprop engine using SIMULINK$\circledR$, performance simulation of PT6A-62 engine, which is main power plant of KT-1, was performed. For validation, performance parameters of the SIMULIINK model were compared with the simulated results by GASTURB program. It was confirm that the results by the SIMULINK model were well agreed with those by GASTURB within 1.07%, It was assumed that installation losses were bleed-air exteraction with a range from 0% to 5%, and power for accessories with a range from 0 to 20hp. In this investigation, it was found that the shafthorsepower was decreased by maxium 0.68%, but specific fuel consumption ratio was not effected nearly by these losses.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06b
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• pp.247-249
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• 2012

본 연구에서는 MATLAB Simulink/Stateflow 기반으로 만든 모델의 transition의 condition을 미리 연산하고, 이를 바탕으로 모델을 최적화하는 모듈을 제안하고 이를 구현하였다. 구현한 모듈은 stateflow 내부의 transition condition의 label string을 이진트리로 구성하고, True/False를 판단한다. 그리고 condition의 True/False 판단 결과를 통해 모델의 최적화 과정을 수행한다. 제안하는 모듈을 이용하여 간단한 예시모델의 수정 과정을 보이고 테스트 커버리지가 향상되는 것을 검증하였다.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2006.05a
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• pp.390-395
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• 2006

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2006.05a
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• pp.396-399
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• 2006

• Transactions of the Korean Society of Mechanical Engineers A
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• v.35 no.10
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• pp.1171-1178
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• 2011

This paper shows the robust design results of an actuator, a kind of dynamic system. Variations in the components comprising the actuator cause uncertainties in the system's dynamic performance. Therefore, a probabilistic design method is applied to ensure robust actuator performance to component variation. A Simulink model for the actuator was built using transfer functions for the components. The dynamic responses of the actuator were evaluated using the Simulink model. Performance indexes were approximated as quadratic functions of the design parameters through the application of the response surface methodology (RSM) with the Simulink model. Then, a probabilistic design method was applied to the approximated performance indexes to obtain optimal design parameters that would provide robust actuator performance. The optimal design was compared to the present design in terms of the performance indexes and dynamic response characteristics over time.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.2
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• pp.847-851
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• 2011

Photovoltaic System is increasing install capacity based on environmental-friendly characteristics. It have been actively studied to improve the efficiency. In order to design highly efficient system, it is important to understand the output characteristics of solar panels. The single diode model can represent the physical characteristics of solar panel. But it needs complex process such as mutli-step measurement and numerical analysis to get the exact parameters. In this paper, The method for extracting characteristic parameters of the single diode model based on the I-V characteristic curves in the panel manufacturer's data-sheet is presented. To verify the proposed method, solar cell model constructed in simulink. Simulink model output compared with output graph in datasheet.