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인터리브드 소프트 스위칭 부스트 컨버터의 입출력 리플 분석
정두용(Doo-Yong Jung),지용혁(Young-Hyok Ji),김영렬(Young-Real Kim),정용채(Yong-Chae Jung),원충연(Chung-Yuen Won) 전력전자학회 2012 전력전자학회 논문지 Vol.17 No.2
In this paper, the input current and output voltage ripple of the soft switching interleaved boost converter was analyzed. Ripples of input current and output voltage with an interleaved method is analysed and as a result, the facts that it has lower ripple current than conventional interleaved method is verified. it means that a capacity of a main inductor can be reduced. Besides, a low capacitance of capacitor which means high lifetime and confidence can be used because of reducing ripples of output voltage. In order to verify the validity of the proposed converter used 10uF film capacitor, experiment was performed, and the efficiency of the proposed converter was measured with variable load and duty conditions.
태양전지 어레이 음영 변화에 따른 손실 보상을 위한 최대전력점 추종 기법
정훈영(Hoon-young Jung),지용혁(Young-hyok Ji),정두용(Doo-yong Jung),이수원(Su-Won Lee),원충연(Chung-Yuen Won) 한국조명·전기설비학회 2009 한국조명·전기설비학회 학술대회논문집 Vol.2009 No.5월
Under partial shading condition, the multiple local maxima can be existed on the output characteristics of PV array. In case of the conventional MPPTs (i.e, P&O or IncCond), the failure of maximum power point tracking could be occurred under partial shading condition(PSC). The problems are deduced by the analysis of conventional MPPTs. In this papar, a real maximum rower point tracking for PV array under partially shaded condition is proposed. And proposed MPPT is analyzed by case study. It is confirmed by simulation results that the proposed MPPT can track the real MPP under partial shading condition.
최광수(Guang-Soo Choi),정두용(Doo-Yong Jung),김재형(Jea-Hyung Kim),원충연(Chung-Yuen Won),김영렬(Young-Real Kim) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월
There are increased interests in using new regeneration energy due to the effect of the latest rising oil price. On this account, various practical applications using small stand-alone PV generation system are being made. In this paper, with intent to change mercury lamp using for existing garden lamp with high flux LED, we have considered load characteristic using high flux LED modules applied to PV system It is simulated with PSIM and made experiment set with a 75[W] solar cell module, DC-DC converter, controller and battery.