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병렬 Interleaved 컨버터에서 일반화된 순환전류 제어 방법
임창순(Chang-Soon Lim),이귀준(Kui-Jun Lee),김래영(Rae-Young Kim),현동석(Dong-Seok Hyun) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
In this paper, the coupled inductor with three branches in two interleaved converter are analyzed to effectively suppress the high frequency circulating current since the circulating current controller cannot mitigate the high frequency circulating current. As a result, the novel averaged model including the coupled inductor with zero sequence components is developed for reducing the low and high frequency circulating current simultaneously.
서창민(Chang-Min Suh),임창순(Chang-Soon Lim),강용구(Young-Goo Kang) 한국해양공학회 1989 韓國海洋工學會誌 Vol.3 No.2
This paper deals with a fatigue life prediction of a surface crack based on the experimentally obtained relationship between surface crack length ratio a/af and cycle ratio N/Nf using micro computer.<br/> Firstly a/af-N/Nf curves obtained from experimental tests, were assumed as three curves UC (the upper limit curve), LC (the lower limit curve) and MC (the middle curve), and these were utilized to predict the fatigue life.<br/> Comparing the calculated values which represent the characteristics of crack growth behaviors from the three assumed curves with the experimental ones, it has been found that in the stable crack growth region, they coincide reasonably well each other. And the differences between the fatigue lives obtained from the assumed curves and the experimental fatigue life did not exceed 20%. Using the characteristics of a/af-N/Nf curves, it is possible to predict the da/dN-Kmax curves and the S-Nf curves.