SPIM 벡터제어를 위한 태양광 발전 시스템

고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),정병진(Byung-Jin Jung),김도연(Do-Yeon Kim),박기태(Ki-Tae Park),최정훈(Jung-Hoon Choi),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2007 한국조명·전기설비학회 학술대회논문집 Vol.2007 No.11월

This paper presents the photovoltaic(PV) water pumping system with a maximum power point tracking(MPPT). The water pumping system uses a variable speed single phase induction motor(SPIM) driven a centrifugal pump by field oriented control(FOC) inverter. The MPPT using a DC-DC converter controlled the duty cycle to track maximum power from PV under different insolation conditions. The duty cycle directly relate with a flux producing current control(i<SUB>ds</SUB>). The FOC inverter uses a current control voltage source inverter(CC-VSI). The simulation results are shown that the characteristics and performance of drive system, which varies as each conditions of light by expresses in voltage(V<SUB>dq</SUB>), current(I<SUB>dq</SUB>), speed of motor and torque.

IPMSM 드라이브의 최대토크를 위한 적응 FNN 제어기

김도연(Do-Yeon Kim),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),정병진(Byung-Jin Jung),박기태(Ki-Tae Park),최정훈(Jung-Hoon Choi),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2007 한국조명·전기설비학회 학술대회논문집 Vol.2007 No.11월

Interior permanent magnet synchronous motor(IPMSM) has become a popular choice in electric vehicle applications, due to their excellent power to weight ratio. This paper proposes maximum torque control of IPMSM drive using adaptive fuzzy neural network controller and artificial neural network(ANN). This control method is applicable over the entire speed range which considered the limits of the inverter's current and voltage rated value. For each control mode, a condition that determines the optimal d-axis current i<SUB>d</SUB> for maximum torque operation is derived. This paper considers the design and implementation of novel technique of high performance speed control for IPMSM using Adaptive-FNN controller and ANN controller. The hybrid combination of neural network and fuzzy control will produce a powerful representation flexibility and numerical processing capability. Also, this paper proposes speed control of IPMSM using Adaptive-FNN and estimation of speed using ANN controller. The back propagation neural network technique is used to provide a real time adaptive estimation of the motor speed. The proposed control algorithm is applied to IPMSM drive system controlled Adaptive-FNN and ANN controller, the operating characteristics controlled by maximum torque control are examined in detail. Also, this paper proposes the analysis results to verify the effectiveness of the Adaptive-FNN and ANN controller.

태양광 발전을 이용한 유도전동기 드라이브의 벡터제어

정병진(Byung-Jin Jung),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),김도연(Do-Yeon Kim),정동화(Dong-Hwa Jung) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.10월

This paper is proposed the vector control of 3-phase induction motor drive system by photovoltaic generation. For performance of vector control using a current control voltage source inverter(CC-VSI). CC-VSI is controlled by torque and flux producing component of motor current, relating with current and and voltage value of photovoltaic arrays at maximum power point that varies follow different level of insolation. The MPPT using a DC-DC converter controlled the duty cycle to track maximum power from PV under different insolation conditions. The simulation results are shown that the characteristics and performance of drive system, which varies as each conditions of light by expresses in voltage(V<SUB>dq</SUB>), current(I<SUB>dq</SUB>), speed of motor and torque.

Ku 대역 무선통신 시스템의 강우영향 분석

최동유,김재섭,박창균 조선대학교 에너지.자원신기술연구소 2004 에너지·자원신기술연구소 논문지 Vol.26 No.2

In this study selected Koreasat 3, which uses the Ku-band(14㎓/12㎓) frequency, and analyzed the beacon signal level data according to the rain rate from June to August in 2001. Then to provide analysis, the experimental data was compared with that obtained using typical rain attenuation models, such as the ITU-R model, the SAM model and the Global model, which have previously been used in satellite communication systems. Also, this study analyzed predicted area path diversity gain on the basis of the path of Daejeon-Koreasat 3 in order to compensate excess attenuation caused by rain, and estimated link budget by hour rate on the basis of the ITU-R model. Establishing the reliability of path diversity gain and link budget achieved by this study may be greatly used as a basic material to design satellite communication system in the future. Furthermore, according to methods to be applied, it could be utilized to construct microwave communication network or broadcasting network on the ground.

製絲時(韓國,中國産고치)의 界面活性劑(Monopol LX, Emulon DO#113) 處理가 製絲成績에 미치는 影響

최진섭,裵啓宣,鄭元福,金東建 東亞大學校生命資源科學大學附設 農業資源硏究所 1992 農業生命資援硏究 Vol.1 No.1

본 實驗은 界面活性劑인 Monopol LX와 Emulon DO #113을 0.04%, 0.07%, 0.1%로 稀釋하여 煮菌時의 低溫渗透部 단독 處理區와 低溫渗透部 및 繰絲湯의 동시 處理區로 하여 中國産고치와 韓國産고치의 繰絲成績 및 絲質을 調査 分析한 結果는 다음과 같다. 1. 解舒率은 韓國産, 中國産 모두 無處理區에 비해 Monopol LX 와 Emulon DO #113을 處理時에 增加하였으며 0.1% 濃度에서 그 경향이 높았다. 2. 解舒絲長은 解舒率과 같은 傾向으로 無處理區보다 Monpol LX와 Emulon DO #113 處理區에서 전반적으로 길어졌는데 특히 中國産고치에서 Monopol LX 0.1% 處理時 高度의 有意差를 보였다. 3. 菌絲長은 處理別로 다소의 增感은 있었으나 無處理區와 거의 비슷한 傾向을 나타내었다. 4. 菌絲量은 Monopol LX와 Emulon DO #113약제 처리시에 감소하는 경향을 나타내었다. 5. 生絲量比率은 無處理區에 비해 減少하는 경향을 나타내었다. 6. 副蠶絲量은 界面活性劑 處理의 結果 그 양이 減少되었으며 특히 韓國産 누에고치에서 0.07%, 0.1%의 Emulon do#113 渗透部 및 繰絲湯 處理區에서 5%의 有意差를 보였다. 7. 解舒率이 높을수록 無處理區에서는 强力은 負의 相關을 解舒絲長, 繭絲長, 繭絲量, 生絲量比率, 伸度등에서는 正의 상관을 나타내었고, Monopol LX 0.1% 處理區는 副蠶絲量에서, 그리고 Emulon Do#113 0.1% 處理區에서는 副蠶絲量, 繭絲織度, 伸度 등에서 負의 相關을 나타내었다. 8. 한국산 고치에 비해 중국산 고치는 고치의 크기가 작고, 解舒率, 解舒絲長, 繭絲長, 繭絲量, 生絲量比率, 伸度등의 成績이 떨어졌으며, 副蠶絲量이 많은 편이었다. This experiment was carried out to investigate the reeling silk results and silk quality of Korean cocoon and Chinese cocoon which were experimented on the following condition that Monopol LX & Emulon DO #113(penetrating agents) were 0.04%, 0.07%, 0.1% under only low temperature osmose treatment and simultaneous treatment of low temperature osomose & reeling bath in cocoon cooking, and the results obtained were as follows; 1. The percentage of reliability increased in the treatment of Monopol LX, Emulon DO #113 as compared with control in both Korean cocoon & Chinese cocoon exhibited a high tendency in 0.1% concentration to the extent to show a significant difference. 2. The nonbreaking length of a bave was totally longer in the treatment of Monopol LX, Emulon DO #113 than control as in the percentage of rawsilk, especially, showed a highly significance in the treatment of Monopol LX 0.1% of Chinese cocoon. 3. The length of a bave showed almost similar tendency to control with more or less increase and decrease according to the treatments. 4. Decreasing tendency was revealed in treating Monopol LX and Emulon DO #113 on the terms of the bave weight. 5. On the terms of the percentage of rawsilk, decreasing tendency was appeared in treating plots as compared with control. 6. The weight of byproduct was decreased by treating the penetrating agents especially on Korean cocoon, the statistically significant differences of 5% were revealed in treating the osomose and reeling both of Emulon DO #113 concentrated with 0.07% and 0.1%. 7. Negative correlation in tenacity was appeared in control as increasing the percentage of rawsilk, and positive correlation in the nonbreaking length, length of a bave weight, percentage of reliability, and elongation was convinced and also negative correlation was revealed in weight of byproduct treated with Monopol LX(0.1%) and in weight of by product, size of bave, and elongation treated with Emulon DO #113(0.1%), 8. The percentage of rawsilk, nonbreaking length of a bave, percentage of reliability, weight of a bave, size of a bave and elongation of Chinese cocoon were all lower than those of Korean cocoon, and on the hand, the weight of byproduct was more.

授業 效率化 要素및 方略

崔東根,沈厚燮 대구효성가톨릭대학교 교육연구소 1994 교육연구논집 Vol.3 No.-

慶北 漆谷郡 河濱池에서 採集한 淡水魚의 吸蟲類 被囊幼蟲의 奇生狀

林宗燮,文柱煥,鄭東一,崔東翊 慶北大學校 醫科大學 1991 慶北醫大誌 Vol.32 No.3

1990年 4月부터 同年 9月까지 慶北 漆谷郡 河濱池에서 淡水魚를 投綱, 낚시, 사발모지等으로 採集하여 吸蟲類 被囊幼蟲의 魚種別 寄生狀을 調査하였다. 河濱池에서 採集된 5種의 淡水魚에서 5種의 吸蟲類 被囊幼蟲을 同定하였던 바 몰개(Gnathopogon atromaculatus)에서는 5種의 吸蟲類 被囊幼蟲이, 참붕어(Pseudorasbora parva)에서는 3種의 被囊幼蟲이 檢出되었고, 강준치(Erythroculter erythropterus)와 납지리(Paracheilognathus rhombea)에서는 各各 1種의 被囊幼蟲이 檢出되었다. 붕어(Carassius carassius)에서는 吸蟲類 被囊幼蟲이 전혀 檢出되지 않았다. 肝吸蟲 被囊幼蟲의 寄生率과 寄生程度는 몰개에서 各各 58.9% 및 2.0個로 가장 높았으며, Metagonimus屬 被囊幼蟲은 몰개에서만 그 率 3.6%, 그 程度 1.0個로 檢出되었다. 그외의 3種의 吸蟲類 被囊幼蟲, Cyathocotyle orientalis, Metacercaria hasegawai, Pseudexorchis major는 各各 7.4個, 1.0個, 1.0個의 寄生程度를 나타내었다. 이번 調査로 慶北 漆谷郡 河濱池는 吸蟲類의 輕微한 浸潤池임과 河濱池에서 醫學的으로 重要한 淡水魚 宿主는 몰개였다. From April to September, 1990, fresh-water fish collected in Habin pond, Chilgok country, Kyungpook Province, were examined for the determination of the prevalence and intensity of infestation with digenetic larval trematodes. From 5 species of fresh-water fish collected, 5 species of metacercariae were identified. Gnathopogon atromaculatus, the korean shiner, was found to be infested by 5 species of the metacercariae whereas Pseudorasbora parva, the southern top-mouthed minnow, by 4 kinds. Erythroculter erythropterus, the white fish, and Paracheilognathus rhombea, the flat bitterling, were infested with 3 kinds of metacercariae. However, no digenetic larval trematode was demonstrated from Carassius carassius, the crusian carp. The rate and intensity of infestation with Clonorchis sinensis was the highest in G. atromaculatus, 58.9% and 3.4 cysts per gram of flesh, respectively. Metacercaria of Metagonimus species was detected from G. atromaculatus alone. The intensity of fish with the remaining 3 kinds of metacercariae, Cyathocotyle orientalis, Metacercaria hasegawai, and Metorchis orientalis, 7.4, 1.0 and 1.0 cyst per gram of the flesh, respectively. In the light of these results, it seemed likely that Habin pond might be enzootic focus of digenetic larval trematodes and G. atromaculatus might be a fish host of the greatest medical importance.

Surface Plasmon Resonance 기술을 이용한 인체분비물 혈액형 분석에 대한 연구

홍승범,최동호,안희중,이동석,김응수,최상규,이영보 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

문서작성과 인영 날인의 선 후 관계에 관한 연구 : 필적과 인영 작성 관계의 순서에 대하여

이영수,최섭,김동욱,양후열,진명수,박찬문 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

性別 및 年齡에 따른 體格과 體力의 特性과 變化에 關한 縱斷的 硏究Ⅱ : Emphasised on College Men of Department of Physical Education 體育專功 大學生을 中心으로

金尙國,姜東洹,張周鎬,金昇一,徐再均,金耕知,孫斗玉,鮮于攝,崔榮烈,尹宇相,金亨燉,方永鎭,朴英震,柳在忠 慶熙大學校 體育科學大學 1989 體育科學論叢 Vol.- No.2

The purpose of this study was to compare the characteristics, change in physique and physical function of college students majoring physical education and Taekwondo (454 males and 64 females of age groups ranging from 18 to 26). The results are as following: 1. The male group of 23yrs old in physical education showed highest values in 7 items(Weight, Chest Girth, Fore Arm Girth, Thigh Girth, Calf Girth, Scapular Skinfold Thickness and Suprailiac Skinfold Thickness). 2. In the Physical function, the male group of 18yrs old showed highest values in Power, Flexibility, and then 21yrs old at Back Strength, Vital Capacity, and 23yrs old at Grip Strength, and 25yrs old at Blood Pressure, respectively. 3. In the physique, the male group of 22yrs old showed highest values in Weight, Chest Girth, Thigh Girth, Calf Girth, and then 24yrs old Upper Arm Girth, Fore Arm Girth, and 19yrs old at Height, Upper Limb Length, respectively. 4. In Physical Function, the 22yrs old showed highest values in Back Strength, Vital Capacity, and then 23yrs old at Side Step, Trunk Extension, but 18yrs old showed lower Values in Grip Strength, Side Step, Vital Capacity and Blood Pressure. 5. The female group of 22yrs old showed highest values in 8 items(Height, Sitting Height, Waist Girth, Upper Limb Length, Lower Limb Length, Skinfold Thickness), and then 18yrs old at 5 items (Weight, Upper Arm Girth, Fore Arm Girth, Thigh Girth, Calf Girth), respectively. 6. In the physical function, the 22yrs old showed highest Values in Grip strength, Back Strength, Power, 5 Minute Run, and 18yrs old at flexibility, Harvard Step Test, respectively. 7. In the change of the physique for two years(1988-1989) in the male group, majoring Physical education the 22yrs old showed increase in 4 items, and the 20yrs old in 3 items, but 18yrs old showed decrease in 3 items. 8. In the change of the physical function for two years in the male group, the 20yrs old showed increase in 4 items, and the 21, 25, 26yrs old in 3 items, but the 19yrs old showed decrease in 6 items, and 18, 22 yrs old in 5 items, respectively. 9. The change of the physique for two years in all female group, of 18, 19, 20, 21yrs old showed increase in 11 items except Skinfold Thickness. 10. In the change of physical function for two years in female group, the 18yrs old showed increase in 3 items, and then 20yrs old in 5 items, but 19, 22yrs old decreased 12 items, respectively. 11. The highest significant difference in physique between male and female was found in weight(mean Value 17.5%), and the lowest difference was found Thigh Girth, Calf Girth(1,3%), Upper Limb Length, Lower Limb Length(2.5%). 12. The Highest difference in physical function was Strength (mean Value 40%), Vital Capacity (33%), Power(22%), but Lower Trunk Flexion, Foot Balance(3.4%). 13. In the difference of Physique and physical function between physical education major and taekwondo major, the physical education showed higher values in skinfold Thickines (mean Value 16.5%), Weight, Waist Girth(4.7%) and Strength(33%), Endurance(5.6%), but subjects majoring Taekwondo showed higher values in Flexibility and Foot Balance. 14. In all male groups, Waist Girth, Scapular Skinfold Thickness, Back Strength, Sargent Jump, Trunk Extension and Diastolic Blood Pressure were showed a significantly related at 0.001 level.