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박민영(M.Y. Park),이상혁(S.H. Lee),임상길(S.K. LIM),양형열(H.Y. Yang),박성준(S.J. Park) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
신재생 에너지를 계통과 효율적으로 연계하기 위해서는 일정한 DQ파형이 필요하다. 하지만 부하의 변동으로 전류가 작을 경우 노이즈의 영향으로 제어에 어려움을 겪게 된다. 따라서 본 논문에서는 효율적인 전류 제어를 하기 위해 DFT 기법을 사용하여 노이즈를 제거하고 기본파 전류 파형을 추출하여 DQ 변환을 수행한다.
한국표준형 핵연료용 안내관/계측관 2단계 냉간필거링 기술특성 평가
박민영(M. Y. Park),박기범(K. B. Park),김인규(I. K. Kim),이영희(Y. H. Lee),신중철(J. C. Shin) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.10
The thermo-mechanical property of zirconium alloy is well known to be influenced by pilgering pass schedule and its tooling; thus the control of its microstructure and mechanical property in the final tube product for nuclear fuel applications is a major concern of tube manufacture. To make final tube, the 3 passes pilgering is applied in general by using TREX(Tube Reduced EXtrusion), 63.5mm outer diameter(OD), in KEPCO NF and most of Zr tube manufacturing companies. They are also taking big efforts to reduce pilgering step for the sake of increasing the efficiency of production in the forming stage of tube. The objective of this study is to develop passes of pilgering schedule from the conventional 3 passes of pilgering schedule for manufacturing the Gide Thimble & Instrumentation tube conforming to specification, which is newly developing component for the advanced nuclear fuel assembly in KEPCO NF.
박민영(M.Y. Park),장영길(Y.G. Jang),서순석(S.S. Seo),김광곤(K.G. Kim),왕용필(Y.P. Wang) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.10
The costs accumulation by Historical construction costs in the electrical construction have to be operated gradually from construction order institution by possible fine quality costs accumulation and operated side by side with a trial the cost accounting process. To achieve gradually accumulated work sections of announced actual costs at a management agency is a desirable method that removes a negative elements at early stage of the system. It has the actual construction cost controlling agency and execution plan a conference with the ordering agency ordering method and history characteristic and the trial base of the universal drawing as to the controlling agency, is needed for the comprehensive system management.