http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
태양광 저에너지 출력을 위한 Buck, Boost 컨버터 구동방식
김병우(B.W. Kim),박성준(S.J. Park),김광헌(K.H. Kim),손무헌(S.M. Heon),조수억(S.E. Cho),김철우(C.U Kim) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
Normally, the buck converter is used for the charging converter of photovoltaic generator because this converter has good characteristics compare with boost and buck-booster converter. But, in case of the sollar-cell voltage is lower than charging voltage, we cannot charge the sollar energy to the charger. So, in this paper, we proposed the novel hybrid converter using by combination of buck and boost converter for the charging converter of photovoltaic generator, as a results, it can operate buck, boost and buck-boost mode. The proposed novel converter has the same characteristics of the existent buck converter and furthermore it can operate as a boost converter. So, we can make the more effective photovoltaic charging system.
출력전압 레벨 수와 전류정격을 고려한 PWM 다중레벨 인버터
박노식(N-S Park),서종준(J-J Seo),박성준(S-J Park),김광헌(K-H Kim),조수억(S.E. Cho),김철우(C-U Kim) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
In this paper, we proposed the novel hybrid multi-level inverter using combination of the output voltage of transformers to reduce the THD(Total Harmonic Distortion) and improve the waveform of output voltage. The proposed multi-level inverter used the output of transformer which is 1times, 2times, 4times of input of the transformers. So we increased the output voltage from the reduce the number of switching component and transformer. Also, we tested the proposed prototype 15-level inverter to clarify the proposed electric circuit and reasonableness of control signal for the proposed multi -level PWM inverter.
전장건(J.G Jeon),조수억(S.E Cho),박노식(N.S Park),박성준(S.J Park),문채주(C.J Moon),권순재(S.J Kwon),김철우(C.U Kim) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
전력 반도체의 방열 특성은 수명 및 소손 과 관계가 있다. 전력 반도체 자체의 열전달 특성 및 전력 반도체가 취부 되는 방열판의 전도, 대류, 방사의 열전달 특성을 고찰하기 위하여 본 논문에서는 실시간으로 방열판의 온도를 관측하여 전력 반도체의 손실을 확인하였고, 프로파일별 히트 싱크 온도 상승 측정 평균 전류와 전류 프로파일과 의 상관 관계를 분석 하여 방열판 최적화 및 히트 싱크 온도 관측 시 히트 싱크의 모델을 제시하였다.
출력 전압파형 개선을 위한 새로운 Hybrid형 멀티레벨 인버터
주성용(S.Y. Joo),강필순(F.S. Kang),김철우(S.J. Park),박성준(T.J. Kim),김태진(C.U. kim) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
This paper presents a novel hybrid type multilevel inverter In order to improve the waveshape of output voltage. The proposed multilevel Inverter is cons1st of two full-bridge modules for level creation and one full-bridge module for PWM operation. The generated levels are total 11-level: 9-level by the level inverter and 2-level by the PWM Inverter. The operational principles and analysis are explained and validity of the proposed system 1S verified through the experimental results using a prototype.
주성용(S.Y. Joo),이정환(J.H. Lee),강필순(F.S. Kang),김철우(S.J. Park),박성준(C.U. Kim) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(2)
In this paper, a novel multilevel inverter using DC-Link voltage combination is presented to reduce the harmonics of output voltage without the output filter inductor The proposed multilevel inverter can generate 27-level output voltage. It employs three H-bridge cells which consist of single phase full- bridge inverter module. As well as, It can make continuous output voltage level employing the properly three DC-Link voltage ratio.<br/> The validity of the proposed inverter is verified through the experimental result using a prototype which can generate a 110[Vdc], 60[Hz] output voltage from 12[Vde], 36[Vdc], and 108[Vdc] input voltages<br/>