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멀티스트링 태양광 어레이용 인터리브드 부스트 컨버터의 설계 및 제어
강영주(Yeongju Kang),이승구(Seunggoo Lee),차한주(Hanju Cha),안태풍(Taepung An) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
본 논문은 3상 인터리빙 방식을 적용한 멀티스트링 태양광발전 PCS를 위한 부스트 컨버터를 다룬다. 컨버터의 동작해석과 이를 기반으로 멀티스트링 시스템을 시험하기 위한 듀얼 시스템의 구축과 실험결과에 대해 언급한다. 이를 기반으로 추후 증대된 용량의 성능을 예측하고, 그 타당성을 검토한다.
염료흡착 시간에 따른 염료감응형 태양전지의 출력 특성 및 내부 임피던스 분석
김희제(Hee-Je Kim),이정기(Jeong-Gee Lee),서현웅(Hyunwoong Seo),손민규(Min-Kyu Son),신인영(Inyoung Shin),안태풍(Taepung An),김진경(Jin-Kyoung Kim) 대한전기학회 2010 전기학회논문지 Vol.59 No.1
Dye-sensitized solar cell (DSC) has been expected to be an alternative to the conventional silicon solar cell due to simple manufacturing process and low fabrication casts. In order to improve productivity of DSC, we attempted to optimize the required time of the adsorption process. According to the change in the adsorption time from 1 to 24h, We analyzed the output characteristics and the change of internal impedance. As a result, The outputs of DSC were continuously increased until 12h of the adsorption time and remained the same after that. Also, We reconfirmed this result that 12h was optimum adsorption by the analysis of the electrochemical impedance spectroscope because the internal impedance was similar to the output.
도시철도 직류 비접지 급전계통에서의 선택 지락보호시스템의 성능평가
정호성(Hosung Jung),김주욱(Joouk Kim),신승권(Seongkuen, Shin),김형철(Hyungchul Kim),안태풍(Taepung An),윤준석(Junseok Yun) 대한전기학회 2012 전기학회논문지 Vol.61 No.12
This paper presents to verify the selective grounding fault protective relaying technique for the ungrounded DC traction power supply system. This system selectively blocks fault section when grounding fault occurred. In order to perform this verification, field test facilities have been installed on Oesam substation and Worldcup-Stadium substation, and field test process has been suggested. Also, selective grounding fault protective relaying components and rail voltage reduction device have been tested with the various trial examinations. In order to compare and evaluate performance of the selective grounding fault protective relaying function, field test system was modeled and the system fault simulation results were compared and evaluated with the field test result. Performance of selective grounding fault protective relaying function was evaluated with the above-mentioned process, and the fact that the system recognizes fault section irrespective of insulation between rail and ground and fault resistance from grounding fault.