전력용 반도체 소자를 이용한 동기발전기 여자 시스템

박노봉,홍현문 충주대 산업과학기술연구소 1997 産業科學論文集 Vol.5 No.-

This paper deals with the design and performance evaluation of exciter for generator system to improve the steady state and transient stability. Speed of the system is constnat, but field voltage is varies as load changes. Linearization of the model and application to control purposes through small signal analysis is considered. The performance of designed controller is examined by extensive non-linear time computer simulation. The results is helped the power system stabilizer and generator system to understand.

뉴톤법에 의한 Thyristor 쵸퍼回路의 定常週期解의 解析에 대하여

朴魯峰 忠州大學校 1984 한국교통대학교 논문집 Vol.17 No.2

Nowadays, thyristor and diode are often used as switching elements with the development of semi- conductor switching elements, and the necessity of analysis of thyristor circuit is increased. Many suggestions have been made in analyzing the circuit with many elements. Most of them, however, have some defects as their calculating efficiency is not good or they require a good knowledge of operation in a given circuit. This paper tried to show some examples of calculation by applying thyristor to high-frequency chopper, and found that the method applied in this paper gave some reduction of calculating hours and improvement of calculating efficiency in comparison with those of traditional simulation method.

블렌드 XLPE의 電氣的 特性에 關한 硏究

朴魯峰,李興圭 충주대 2001 한국교통대학교 논문집 Vol.36 No.2

In this Study, the effect of blend on Electrical Characteristics of Cross-linked polyethylene has been investigated.The two kinds of XLPE whose densities were evaluated to be 0.954[g/㎤] and 0.967[g/㎤], respectively, were used and mixed according to the different blend ratio. The five kinds of specimens were classified according to the blend ratio which was determined by weight percent(wt%) of XLPE with 0.967[g/㎤] to the total weight.In the X-ray diffraction patterns, peaks appear at 2θ=21.7°, 24.7° and 36.3°. The blended XLPE of 50wt% shows the lowest impulse breakdown strength, Eimp at 30℃

白熱電球의 壽明에 關한 考察

朴魯峰 忠州大學校 1976 한국교통대학교 논문집 Vol.9 No.-

The length of life for incandescent lamps has been fixed by manufacturers at too low a level as a result of widely accepted calculation of mathematics which, this paper argues, is erroneous. On amending the method of mathematic calculation, it is shown that the length of life should be fixed at about 50% above present values, it is also suggested that if other elements in the calculation were amended, a further lengthening would be required.

棒一平板電極에서 空氣中 正極性 스트리마 시뮬레이숀에 關한 硏究

朴魯峰 忠州大學校 1995 한국교통대학교 논문집 Vol.30 No.2

I found out the fact that streamer-making in the spark discharge was much influenced. However, in spite of the fact that we find amuzing blackdown characteristics in the unequal electric field, the intrepretations are not found so much. This paper aims at the interpretation on the streamer from the streamer simulation in relation with the spacial change, time change, and charge atom density.

중만생 고품질 오갈병 저항성 벼 ‘신보(新寶)‘

박노봉,김정일,여운상,이지윤,권오덕,박동수,이종희,조준현,송유천,김상열,오성환,손영보,장재기,신문식,남민희 한국육종학회 2019 한국육종학회지 Vol.51 No.3

Oryza sativa ‘Sinbo’ is a cultivar of japonica rice with good eating quality as well as resistance to rice dwarf virus (RDV) and bacterial blight disease (BB). It was developed in 2013 by the rice breeding team of Yeongdeok Branch, National Institute of Crop Science, RDA, Korea. This cultivar was derived from a cross between ‘Yeongdeog34‘, a cultivar with good eating quality, and ‘Saekyehwa’, a cultivar of a good plant type, in summer of 2002. A promising line (YR24264-25-3-2) selected using the pedigree breeding method was designated as ‘Yeongdeog55’ in 2010. After carrying out the local adaptability test at nine locations from 2011 to 2013, ‘Yeongdeog55’ was published under the name of ‘Sinbo’ in 2013. ‘Sinbo’ is a medium-late maturing cultivar with a short culm length of 70 cm. This cultivar is resistant to K1, K2, and K3 races of bacterial blight as well as to dwarf virus, and it is moderately resistant to leaf blast disease. The results of the panel test indicated that ‘Sinbo’ has translucent and clear milled rice kernel without white core and belly rice as well as good eating quality. The yield potential of ‘Sinbo’ was approximately 5.67 MT/ha at the ordinary fertilizer level in the local adaptability test (LAT). This cultivar could be adaptable to the middle plain, south plain, Yeongnam plain, east costal area, and south mid-mountainous area of South Korea. (Registration No. 5643)

針 對 平板 Gap의 50% 閃絡電壓 特性에 對한 硏究

朴魯峰 忠州大學校 1987 한국교통대학교 논문집 Vol.20 No.2

There have been studies on the flashover voltage characteristics based on the features of discharge development, and for the study of 50% flashover voltage characteristics in the air by positive impulse voltage it has been examined quatatively on the model of inception voltage, length and charge quantity of corona streamer in needle to plane electrode geometry, and the charge quatity and length of streamer discharge. To improve these matters I examined the 50% flashover voltage charateristics by positive impulse voltage in needle to plane electrode geometry using the discharge model.

周波數 非依存性의 線形 三次元 電磁界의 有限 要素法 解析에 關한 硏究

朴魯峰 충주대학교 1993 한국교통대학교 논문집 Vol.27 No.-

A finite element formulation of full maxwell's equations in terms of a vector potential and a scalar potential is presented. The vector potential and the scalar potential are approximated by novel vector basis functions and usual scalar basis functions, respectively. The linear equation finally obtained in this formulation always becomes sigular, and then it can be solved only when both the given electric current and the given electric charge satisfy the equation of continuity. It is found that a gauge fixing of the potentials is transformed into regularization of the intedterminate linear equation. Two convenient gauge conditions for solving electromagnetic problems, magnetostatic problems and eddy current problems are proposed. These are the gauge of φ=0 and the extended Coulomb gauge.

BiSrCaCuO係 超傳導薄膜의 熱力學 擧動에 關한 考察

박노봉 忠州大學校 2008 한국교통대학교 논문집 Vol.43 No.-

This paper performed the basic study for fabricating the superconducting thin film of high quality and superconducting thin films have been fabricated by co-deposition method at the ultra-low growth rate. In the deposition using co-sputtering method, the single phase of Bi 2201 was fabricated in the low temperature of substrate and the phase of Bi 2212 in above 750℃. In both cases, the c axis-oriented phases were acquired. Despite setting the composition of thin film Bi2212 or Bi2223, in both cases, Bi2201, Bi2212 and Bi2223 phase were appeared. It was confirmed the obtained field of stabilizing phase was represented in the diagonal direction of the right below end in the Arrhenius plot of temperature of the substrate and PO3, and it was distributed in the rezone. Through the thermodynamical calculation of and , in the case of fabricating the single phase of Bi2212, the values of -260 kJ/mol and -225 J/mol․K were acquired respectively. In the compounds of the plural system such as oxide superconducting thin films, a lot of stable phases and semi-stable phases exist. The phase diagram acquired through this study has very similar feature with the case of bulk reaction, so it is strongly suggested that the deposition method in this study can be a cogent means for formulating BSCCO thin films.

Townsend의 電流 成長式에 關한 硏究

朴魯峰 忠州大學校 1993 한국교통대학교 논문집 Vol.29 No.2

The current growth equation of townsends is a basic equation of discharge current in the air. This study dealt with the values of α, I??, γ, d?? in the current growth equation of Townsends by experiments and numerical values and showed how to decide these values.