역률보상 기반 고조파 수동필터 제어기의 개발

오훈,유재근 국제차세대융합기술학회 2019 차세대융합기술학회논문지 Vol.3 No.1

고조파에 의한 전기설비 사고와 경제적 손실은 증가하고 있다. 고조파 수동 필터는 고조파를 억제하는데 효과적이고 경제적이지만, 많은 현장 엔지니어들은 고조파 증폭과 병렬 공진 발생 등의 문제점으로 인해 계통에 수동 고조파 필터를 설치하는 것을 꺼려한다. 본 논문에서는 이러한 문제점을 해결하기 위해 역률 보상을 기반으로 하는 고 조파 수동필터 제어기를 개발하였다. 개발된 시스템의 전압 및 전류 측정 정확도는 표준 전력 발생장비인 FLUKE 61000A를 이용하여 시험하였으며, 측정 정확도는 0.5% 이하로 나타났다. Accidents of electric equipment and economical loss by harmonics show a rising tendency. A passive filter is economic and efficient in suppressing harmonics. But many engineers and designers are reluctant to install a passive filter to defect harmonics at their power system because of problems such as harmonic amplification and the probability of generating series or parallel resonance with the power system. This work have developed harmonic passive filter controller based on power factor correction that passive filters. The volated and current measurement accuracy of the developed system is tested by using electrical power standard devices FLUKE 61000A. The test results showed that accuracy of the developed system is less than 0.5 %

3相 非對稱 整流回路의 PAM 方式을 이용한 高調波 低減法

오훈,윤양웅,박현철 한국조명·전기설비학회 1995 한국조명·전기설비학회 학술대회논문집 Vol.1995 No.-

In this paper, we present a new PAM method without the input transformer for reducing harmonics in input AC line currents of converter. This system can reduce the harmonics like conventional 12-pulse convener. the dual bridge circuits are controlled with the shifted firing angle and connected 2 tap interphase reactor. the input current using 2 tap changing on interphase reactor is controlled with the different two values in order to make the input current waveform 12 pulses. The characteristics of this system were conformed through the computer simulation and the experiments.

이동 애드 혹 네트워크의 Mobile IP 지원을 위한 네트워크 구조 및 라우팅 프로토콜

오훈,판안탄 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.1

c-DSDV 라우팅 프로토콜에서 클러스터헤드의 혼잡 회피를 위한 적응적 라우팅 방법

오훈,윤석열,부쵸우투완 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.3

22.9kV 배전철탑용 아킹혼 설계

오훈,손홍관 대한전기학회 2006 전기학회논문지A Vol.55 No.2

- Owing to the strike of lightning a breakage of insulator would happen. This breakage may give rise to many problems such as increment of reclosing failure, a drop for reliance and a hardship of maintenance and repair.To solve those problem, this study develop a protected equipment for insulator which is suitable to 22.9[kV] distribution line towers and is purposed to investigation for a proper adaption, protection efficiency of insulator and effect of adaption.

신경회로망을 이용한 PID 제어기 자동동조

오훈,최석호,윤양웅,Oh, Hun,Choi, Seok-Ho,Yoon, Yang-Woong 한국조명전기설비학회 1998 조명·전기설비학회논문지 Vol.12 No.3

본 논문에서는 시스템의 동특성이 변화 가능한 구간에서 임의의 생플올 추출하여 신경회로망을 학습시킴으로써 시스템 동특성에 따라 Pill 제어기가 자동동조하는 방법을 제시하였다. 신경회로망을 학습시키기 위해 역전파 학습 알고리즘올 사용하였고, 교사치로는 규칙기반에 의해서 얻어진 매개변수를 이용하였다. 부하 변화시 시스템의 동특성에 맞는 Pill 제어기가 자동동조됨을 시뮬레이션에 의해 확인하였다. In this paper, the control technique that ID controller are autotuned according to system dynamics, driving out sample in the changeable limits of system dynamics and learning neural network, is presented. In order to lean neural network, the backpropagation learning algorithm is used and the controller parameters obtained by rule-base are used as teacher's values. When load changes, the auto-tuning of PID controller proper to system dynamics is conformed by simulation.

韓國人의 人乳組成에 관한 연구

오훈,이재영 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.2

This experiment was carried out to compare chemical compositions, mineral contents, amino acid compositions and electrophoretic patterns of protein of Korean human and cow's milk. The results are summarized as follows: 1. Human milk appeared to contain similar amount of total solids (11.28%) and fat(3.1%) to those of cow's milk, but higher lactose(6.77%) content and lower in protein(1.27%) and ash(0.19%) contents. 2. Ratios of Calcium to Phosphorus in human and cow's milk were 2. 63 : 1 and 1. 27 : 1, respectively, indicating ratio of calcium to Phosphorus in human milk was higher than that of cow's milk. Generally, major mineral contents in human milk was lower than that of cow's milk. 3. Ratios of casein to whey protein in human and cow's mills were 1 : 1.14 and 1 : 0. 2, respectively, indicating proportion of whey protein in human milk was higher than that of cow's milk. Content of nor-protein-nitrogen of human milk appeared to be 20.67%, which was 4 times as high as that of cow's milk. 4. Analytical results of amino acid compositions of human milk indicated that amino acid contents in human milk were lower than those of cow's milk as a whole, but cys and phe contents is human milk were higher than those of cow's milk. 5. Results from Slab-gel electrophoretic patterns of human milk casein showed that β -casein was a major component consisting of six bands and α_s1-casein which is one of the major component of cow's milk casein was absent. 6. Of human whey protein, lactalbumin appeared to be a major component. And other proteins such as lactoferrin, immuno-globulin and lysozyme formed a spearding zone altogether on the slab-gel. 7. β-Lactoglobulin which is one of the major components in cow's whey protein was absent in whey protein of human milk.

서보 시스템을 위한 퍼지 자동 동조 PID 제어기

오훈,윤양웅,Oh, Hun,Yoon, Yang-Woong 한국조명전기설비학회 1995 조명.전기설비 Vol.9 No.1

PDI 제어기는 많은 서보 제어 시스템에 사용되고 있다. 하지만 제어 시스템이 가변부하일 경우에 정밀한 제어는 어렵게 된다. 이에 대한 보완적인 한 방법으로, 본 논문에서는 가변부하일 경우 퍼지 규칙에 의해 PID 제어기의 매개변수를 자동 동조하는 방법을 제시하였다. PID 제어기의 매개변수는 부하 변화에 따라 퍼지 규칙에 의해 결정된다. 퍼지 자동 동조에 의한 정밀한 제어 기능은 모의실험에 의해 확인하였다. PID controller is being used in many servo control system. However, when a control system has variable load, it is difficult to guarantee the accurate control of the system. In the way of solving this problem, in this paper, a auto-tuning method of PID controller parameter using fuzzy rule in variable load is presented. The parameter of PID controller are decided by fuzzy rule according to load variation. The accurate control function of fuzzy auto-tuning is demonstrated by simulation.

직류 서보 전동기 제어의 강인성을 위한 전문가 관리 제어

오훈,박왈서,Oh, Hun,Park, Wal-Seo 한국조명전기설비학회 1995 조명.전기설비 Vol.9 No.6

It is needed to robust control for D.C. servo motor according to industrial automation. However, when a motor has an effect of disturbance and variable load, it is very difficult to guarantee the robustness of the system. as a compensation way of solving this problem, in this paper, a expert supervisory control method for motor control system is presented. Expert supervisory controller is designed by error and error change, and nth control input is decided by the addition of (n-1)th control input and inference amount of increase or decrease. Control input of expert supervisory control is transmitted to input, and the disturbance effect decrease remarkable by control input. The robustness of D.C. servo motor using expert supervisory control is demonstrated by the computer simulation.

조가선 이상 장력 작용에 대한 전주의 영향 및 보호 대책 연구

오훈,Oh, Hun 한국조명전기설비학회 2006 조명·전기설비학회논문지 Vol.20 No.3

본 연구에서는 통신선 가설 보조 기구인 조가선에 이상 장력이 작용하였을 때 전주의 영향을 유한 요소 해석을 통하여 전주 보호 기구를 설계 해석하여 보호시스템을 개발하였다. 보호시스템은 일반하중 또는 풍압과 일반적인 불평형 하중에서는 조가선이 탈락되지 않고 일정강도 이상이 가해지면 조가선이 자동 탈락되어 전주의 절손 방지 역할을 한다. 이러한 보호시스템의 구조는 유한 요소 해석을 통하여 해석되어졌고, 실제 제품에 대한 인장강도를 측정함으로써 성능을 입증하였다. In this study, we analyzed the influence or electrical pole by FEM(Finite Element Method) and developed protective system by designing and interpreting protective system for electrical pole when abnormal strength worked on messenger wire. Protective system did not shed messenger wire under wind pressure and discontent load but did assign a part to preventing rupture of electrical pole through automatically shed messenger wire over fred strength. Structure of protective system analysis by FEM and prove property by measuring tensile strength for practical product.