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김형석(H. S Kim),박정국(J. G Park),임홍우(H. W Lim),조금배(G. B Cho),백형래(H. R Baek),최창주(C. J Choi) 한국조명·전기설비학회 2003 한국조명·전기설비학회 학술대회논문집 Vol.2003 No.-
Total six units of 3kW photovoltaic system and data acquisition system (DAS) are constructed for analyzing performance of PV system at field demonstration test center of Gwang-Ju in Korea. As climatic and irradiation conditions are varied. Operation characteristics of the PV system are collected and analyzed in data-acquisition system. Furthermore, not only performance test of each PV system component such as PV module and power conditioning system but also performance of total PV system e.g. system efficiency power and loss factor at the site are reviewed.
MATLAB-Simulink를 이용한 Newton method의 MPPT 출력특성 분석
백승학(S.H. Baek),임지혜(J.H. Im),임양수(Y.S. Lim),박정민(J.M. Park),임홍우(H.W. Lim),최문한(M.H. Choi),조금배(G.B. Cho),백형래(H.L. Baek) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
Now a days has problem of energy resource shortage and environmental pollution. We are looking up various solution plans regarding this problem. Solar power is one of the solution to solve the energy shortage problem. But solar power is affected by the weather. So variation weather we can use Maximum Power Point Tracing device for solar PV system. In this paper, the new MPPT method using MATLAB - Simulink analysis of output characteristics. Using Newton Method in this paper, set up ever search step of the tracking process. Like this way analyze MPPT method.
김보현(B.H. Kim),이성길(S.K. Lee),임양수(Y.S. Lim),임홍우(H.W. Lim),조금배(G.B. Cho),백형래(H.L. Baek),정수복(S.B. Chung) 전력전자학회 2009 전력전자학술대회 논문집 Vol.2009 No.1
본 논문에서는 단일 스위치 방식의 포워드컨버터에서 스위칭소자에 직류버스전압의 합, 트랜스포머전압의 반영, 그리고 턴오프 누설 인덕턴스의 스파이크와 같은 스트레스가 가해지므로 이중 스위치 방식의 포워드 컨버터를 설계 및 제작하여 출력특성을 고찰하였다. 제어용 IC는 PFC와 PWM 제어가 하나의 칩에서 이루어 지는 TI사의 UCC28510을 이용하여 21V 및 13.5V의 다중출력 포워드 컨버터 SMPS를 설계 구성하였다.
정병호(B.H.CHUNG),최문한(M.H.CHOI),조금배(G.B.CHO),백형래(H.L.BAEK),서진연(J.Y.SEO),김대곤(D.G.KIM) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
To use the SLIM for servo system, the exact account of thrust about the initial speed is needed, but analyzing by equivalent circuit analyzing methode such as rotary induction motor, the error occurs because of the end effect. So, we applied the equivalent circuit considering the end effect of SLIM in this paper. The current control system is advanced the space vector pulse width modulation by using high arithmetic performance microprocessor such as DSP. In this paper, we use the dynamic characteristic analyzing methode that can calculate efficiently the end effect by using equivalent circuit methode in the operating SLIM system modeling and examine the output characteristics of SVPWM with PI controller.
김평호(P. H. Kim),박인준(I. J. Park),정병호(B. H. Chung),오금곤(G. K. Oh),백형래(H. L. Baek) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper describes the controller for the improving speed control the AC servo motor. The microprocessor provides an output to the difference in command. The servo system improves the characteristics of speed control. When the motor is running at the same speed as set by the reference signal, the speed encoder also provides a signal of the same frequency. Thus, the microprocessor controlled digital techniques enable to realize the flexible performance and control which was possible with time constant. We can know that optimal speed of machining center is 75msec in 30000mm/min and actually, 75msec is using on machining center. Finally experimental results prove excellent performance of this control system. This can be reduced error with more exact measure of actual speed. The system can be adaptable to CNC machine.<br/>