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RISS 인기검색어
- 검색키워드
- 저자 : 金元燮 (검색결과 7 건)
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金元燮,吳在喆,金成光 全北大學校 1984 論文集 Vol.26 No.-
The development of solar light generation converting solar emitting energy to electric power are advanced along with the semiconductor technique. Solar light generation have the great merit to obtain solar energy easily. In addition, These has not the polution of air withrespect to effect of electric guntum in semiconductor Hence several authors proposed the solar cell but they have the problem due to high cost of silicon and cell structure resoure. In this paper we proposed the low cost of solar cell using the characteristics of solar energy generation and particulary new development of solar cell using multicrystal silicon.
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電子計算機의 System 硏究 : System Simulation의 새 提案 New design of system Simulation
金元燮 全北大學校 1981 論文集 Vol.23 No.-
With advent of the computer technology, the organization of computer systems has been increasingly extended and complexed. The detailed design of the systems can not be completed until several system design criteria are established. The complexity of the proposed systems makes it extremely difficult to analyse their dynamic characteristics, and thus to have an optimal design. Even the existence of the systems can not be justified on the basis of simple mathematical calculations. Therefore, it is an important research subject to develop a method to simulate computer systems. As far as computer systems simulation is concerned, it has not sufficiently developed, since the computer systems are so complex that it is impossible to describe them virtually in terms of a set of mathematical equations. It might be consequently considered that the only way of analysing the behaviors of computer systems would be one describing them explicitly by using another computer. The main object of this thesis is to propose a practical and exact mean of simulating computer hardware systems, and then to illustrate the feasibility of the proposed method through applying it to an existing computer system. Moreover, it is also necessary to indicate that the simulation is a useful tool for a quatitative performance evaluation, and is crucial in improving the design of computer systems. Details are given of the proposed method and the experiments on the simulation as well as the discussion associated with the procedures and techniques used in designing and carrying out the simulation.
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尹載殖,金元燮,金斗錫 全北大學校 1982 論文集 Vol.24 No.-
This paper describes the experimental results for a Development of Fuel cell which is connected to a Generator system as a power-source. The fuel-cell power system model used in our experiments is composed of 2kW (100V, 20A rating) alkalielectrolyte H_2-air fuel cell and DC-AC converter. We carried out many experiments under the condition that this fuel-cell power system as a power source was connected with a simulated distribution network. We obtained its static characteristics and transient characteristics when voltage fluctuation or short-circuit failure occurred in the distribution network. From these results, We have found that fuel-cell power system is able to apply to a distribution system. And also, this paper describes basic matters and problems for conceptional design about a feulcell power plant to practical use. We investigate as following factor : ㆍapply points of a fuel-cell power plant in electric power system. ㆍtarget rating of a fuel-cell power plant. ㆍsystem composition of fuel-cells and inverter. ㆍrequired operational performance of its power plant. ㆍestimation of H_2-gas production methods. ㆍtechnical study problems in future We believe firmly that this paper is very useful when the utility introduce a fuel-cell power plant as a power source in electric power system.
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金東弼,金元燮,金斗錫 全北大學校 1981 論文集 Vol.23 No.-
Recent increase in power supply capacity modernization and rationalization of high voltage distribution lines in korea requires electrically and mechanically more reliable insulators. The electical porcelain which has made today's EHV power transmission possible must be highly reliable in its mechanical strength as well as in electrical properties. Many studies have been made in search for a better porcelain that meets the requirements. This report portrays and compares various aspects and characteristics of electrical porcelains such as Conventional Porcelain, Alumina Porcelain and Cristobalite Porcelain in terms of their characteristics and applications. Also explained are the studies made on compression glaze, internal stress, size effect and electrical properties. Spiral rod line post insulators have been developed out of these needs and they have already demonstrated excellent performances in service. The outstanding features of these insulators are as follows. 1) As alumina porcelain is used, mechanical strength and power are resistibillity are excellent. 2) They are free from deterioration and puncture because of the solid core construction, virtually maintenance-free. 3) The insulation level is 1.5 times that of the existing pin type insulators. This strengthened insulation level is effective for preventing lightning flashover of the insulator and therefore it is also effective to protect insulated conductor from power arc melting breakage. 4) They show superior characteristics under heavy pollution conditions due to the antipollution design of insulator profile.
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