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안재우(Jaewoo Ahn),하정준(Jungjun Ha),최병조(Byungcho Choi) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
This paper presents the results of the power system analysis and power loss breakdown performed on a 40-inch ac plasma display panel (PDP) TV set. The architecture and function of power system is reviewed. The power flow inside the PDP TV set is presented, and the distribution of the power loss is analyzed. It was found that the sustain driver circuit and power factor correction (PFC) circuit are the two major sources of the power loss. The results of this paper can be used as a preliminary guideline to improve the architecture and efficiency of power systems for ac PDP application systems.
Formation of silicon sheet on a rotating substrate.
Lee, Jaewoo,Lee, Changbum,Kim, Joonsoo,Jang, Bo-Yun,Ahn, Youngsoo,Yoon, Wooyoung American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.4
<P>A spin casting process to fabricate polycrystalline silicon sheets for use as solar cell wafers is presented and the parameters that control the sheet thickness are investigated. The computational model for the spin casting is proposed in order to understand the melt flow and solidification behaviors in the mold. The effect of the rotating speed of the mold and substrate morphology on the silicon sheets is studied via computer simulations, and the simulation results are compared with the experimental results. The numerical study of the fluidity and solidification behavior of the silicon predicted that the formation of rectangular sheets via spin casting is feasible, and the subsequent experiment confirmed this prediction. Using a square mold, rectangular silicon sheets can be produced under appropriate experimental conditions. Microstructural analyses verified the presence of long columnar structures on the sheets.</P>