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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
Journal Basic Information
Journal DOI :
The Korean Institute of IIIuminating and Electrical Installation Engineers
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Volume & Issues
Volume 27, Issue 12 - Dec 2013
Volume 27, Issue 11 - Nov 2013
Volume 27, Issue 10 - Oct 2013
Volume 27, Issue 9 - Sep 2013
Volume 27, Issue 8 - Aug 2013
Volume 27, Issue 7 - Jul 2013
Volume 27, Issue 6 - Jun 2013
Volume 27, Issue 5 - May 2013
Volume 27, Issue 4 - Apr 2013
Volume 27, Issue 3 - Mar 2013
Volume 27, Issue 2 - Feb 2013
Volume 27, Issue 1 - Jan 2013
Selecting the target year
A Smart Lighting Management System with Satisfaction of User's Lighting Requirements
Shin, Dae-Sik ; Kim, Hoon ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 1~8
DOI : 10.5207/JIEIE.2013.27.6.001
In this paper, we proposed a smart lighting management system controls the lighting efficiently to reduce energy consumption while satisfying user's lighting requirements. The proposed system considers the available daylight intensity and indoor light source to satisfy the lighting requirements of each user according to the work environment. In addition, for user convenience, we have developed different user interfaces for lighting control including local interface, and remote interface through internet or Bluetooth for personal computer as well as smart phones. The proposed system satisfies the lighting requirements of each user according to the corresponding work environment. The proposed smart lighting management system utilizes the lighting energy efficiently, and can be considered a significant contribution towards future green buildings.
An Operating Characteristics of Surface Permanent Magnetic Synchronous Generator for 5-Phase 5kW
Jung, Hyung-Woo ; Kim, Min-Huei ; Song, Hyun-Jik ; Kim, Dong-Hee ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 9~16
DOI : 10.5207/JIEIE.2013.27.6.009
This paper presents an operating characteristics of the 5-phase 5kW with developed the surface permanent magnetic synchronous generato (SPMSG) in order to make a study of a polyphase ac motors keeping hold of more advantages. There are shown a amplitude and waveform of the generated electromotive force, in FFT analysis of harmonics, within output voltages, and reviewing a experiment results in no-load test, resistive load, and inductive load using 5-phase induction motor by variable output frequency. The operating characteristics of the developed manufacturing generator include voltage regulation, efficiency, power factor, THD, and so on at rated load.
Short-Term Electric Load Forecasting for the Consecutive Holidays Using the Power Demand Variation Rate
Kim, Si-Yeon ; Lim, Jong-Hun ; Park, Jeong-Do ; Song, Kyung-Bin ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 17~22
DOI : 10.5207/JIEIE.2013.27.6.017
Fuzzy linear regression method has been used for short-term load forecasting of the special day in the previous researches. However, considerable load forecasting errors would be occurring if a special day is located on Saturday or Monday. In this paper, a new load forecasting method for the consecutive holidays is proposed with the consideration of the power demand variation rate. In the proposed method, a exponential smoothing model reflecting temperature is used to short-term load forecasting for Sunday during the consecutive holidays and then the loads of the special day during the consecutive holidays is calculated using the hourly power demand variation rate between the previous similar consecutive holidays. The proposed method is tested with 10 cases of the consecutive holidays from 2009 to 2012. Test results show that the average accuracy of the proposed method is improved about 2.96% by comparison with the fuzzy linear regression method.
A Study on 3-Phase Balance of Offshore Wind Generator with Dual Inverter System
Seo, Jangho ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 23~30
DOI : 10.5207/JIEIE.2013.27.6.023
This paper shows the method of winding connection and the balance of three phase of dual inverter systems used for offshore wind power generator. In order to satisfy low cost manufacturing of large scaled wind generator, the number of slot per pole per phase should be reduced. For this reason, in this research, the number is selected as '1' which is the minimum number that stator can have. Based on the prototype machine, three types of machine for the analysis are selected, and various performances especially in terms of electrically balanced condition are also investigated. Moreover, in this paper, new inductance modeling of dual 3-phase considering cross-coupling between two inverter systems is proposed. The several inductances such as mutual-, synchronous inductances are studied. By using FEA, based on calculated the flux linkage of d and q-axis, the validity of the proposed inductance modeling is confirmed.
Development of a Microplasma Source under Atmospheric Pressure using an External Ballast Capacitor
Ha, Chang-Seung ; Lee, Je-Hyun ; Son, Eui-Jeong ; Park, Cha-Soo ; Lee, Ho-Jun ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 31~38
DOI : 10.5207/JIEIE.2013.27.6.031
A pulse driven atmospheric plasma jet controlled by external ballast capacitor is developed. Unlike the most commonly use DBD sources, the proposed device utilizes bare metal electrode. The discharge energy per pulse can precisely be determined by changing voltage and capacitance of the ballast capacitor. It is shown that the device can provide wide range of plasma, from stable glow mode to near arc state. Current-voltage waveforms, optical emission spectra and discharge images are investigated as a function of an injection energy. The OES shows that He and oxygen lines are increased as a function of the external ballast capacitor. Ozone and rotational temperature have similar tendency with a power consumption. The feeding gas is He and the applied DC voltage is from 400V to 800V when the gap distance is
Representative Temperature Assessment for Improvement of Short-Term Load Forecasting Accuracy
Lim, Jong-Hun ; Kim, Si-Yeon ; Park, Jeong-Do ; Song, Kyung-Bin ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 39~43
DOI : 10.5207/JIEIE.2013.27.6.039
The current representative temperature selection method with five cities cannot reflect the sufficient regional climate characteristics. In this paper, the new representative temperature selection method is proposed with the consideration of eight representative cities. The proposed method considered the recent trend of power sales, the climate characteristics and population distribution to improve the accuracy of short-term load forecasting. Case study results for the accuracy of short-term load forecasting are compared for the traditional temperature weights of five cities and the proposed temperature weights of eight cities. The simulation results show that the proposed method provides more accurate results than the traditional method.
A Study of Surface Discharge Characteristics for Dew-Point of Dry-Air and Materials or Shapes of Solid Insulator in Quasi-Uniform Field
Min, Gyeong-Jun ; Kang, Byoung-Chil ; Lim, Dong-Young ; Lee, Kwang-Sik ; Park, Won-Zoo ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 44~49
DOI : 10.5207/JIEIE.2013.27.6.044
This study investigates the surface discharge characteristics of solid insulators by varying their materials, their shapes, and the dew-point of dry-air. The methodology of this study is that a quasi-uniform field is first applied to a test chamber. Then, the chamber is filled with dry-air as an insulation gas which pressure is varied from 1 to 6atm while applying an AC voltage to the chamber. The used solid insulators are teflon, polycarbonate, and bakelite. As the dew-point is lower and the pressure of dry-air is higher, the flashover voltage of all solid insulators increases more. When each characteristic of the solid insulators is compared under the same gas pressure, the flashover voltage of teflon is the highest. Then, the flashover voltage of polycarbonate is higher than that of bakelite. Moreover, it is observed that the flashover voltage increases as the diameter and the thickness of each solid insulator become larger and thicker, respectively. However, the thickness of the solid insulators is more critical for increasing the flashover voltage than their diameter.
The Design and Implementation of Arc Power supply for Neutral Beam Injection
Lee, Hee-Jun ; Shin, Soo-Cheol ; Lee, Seung-Gyo ; Jung, Yong-Chae ; Won, Chung-Yuen ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 50~58
DOI : 10.5207/JIEIE.2013.27.6.050
The Neutral Beam Injection(NBI) generates ultra-high temperature energy in the tokamak of nuclear fusion. The NBI consists of filament power supply acceleration and deceleration power supply and arc power supply(APS). The APS has characteristics of low voltage and high current. APS generate arc through constant output of voltage and current. So this paper proposed suitable buck converter for low voltage and high current. The case of proposed buck converter used parallel switch because it can increase capacity and decrease conduction loss. When an arc is generated, the NBI chamber occur high voltage. And it will break output capacitor of buck converter. Therefore the output capacitor was removed in the proposed converter. Thus buck converter with constant output is the most important design of the output inductor. In this paper, designed APS verified operation of system and stability through simulation and prototype.
A Neural Net Type Process Model for Enhancing Learning Compensation Function in Hot Strip Finishing Rolling Mill
Hong, Seong-Cheol ; Lee, Haiyoung ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 59~67
DOI : 10.5207/JIEIE.2013.27.6.059
This paper presents a neural net type process model for enhancing learning compensation function in hot strip finishing rolling mill. Adequate input and output variables of process model are chosen, the proposed model was designed as single layer neural net. Equivalent carbon content, strip thickness and rolling speed are suggested as input variables, and looper's manipulation variable is proposed as output variable. According to simulation result using process data to show the validity of the proposed process model, neural net type process model's outputs give almost similar data to process output under same input conditions.
A study on the Distance and Frequency Variable Characteristics of Flat Plate Induction Heating Element
Woo, Hyoung-Gyun ; Shin, Dae-Chul ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 68~74
DOI : 10.5207/JIEIE.2013.27.6.068
Induction-heated system is innovative system which applied IH(Induction Heating) magnetic induction heating generated from induction-heated metallic package and high-frequency power circuit technique for thermal converse technique. In this occurs not burning, so that the working environment and deterioration of products can be improved. This technique is used high frequency inverter. By using high frequency inverter high frequency in the range of kHz can be made with conventional alternative current. In this contribution IGBT module is used for high frequency inverter. In this paper are discussed analysis of characteristics according to the each frequency and produced Flat plate induction heating system using 1.5kW-class half-bridge resonant inverter. In addition, operating characteristics of the system to changes in the distance between the coil and the heater, applications of system are also discussed.
Protection coordination between residual current device and surge protective devices in low-voltage consumer's installations
Lee, Bok-Hee ; Kim, Hoe-Gu ; Park, Hee-Yeoul ; Ahn, Chang-Hwan ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 75~81
DOI : 10.5207/JIEIE.2013.27.6.075
In this paper, protection coordination between residual current devices and surge protective devices in low-voltage consumer's distribution systems are presented. In the case that a surge protrctive device(SPD) is located on the load side of an residual current device(RCD), when the surge is injected from the source side of the RCD, most of injected surge currents are split into the RCD and the protection coordination between the SPD and RCD is improper, three of 6 specimens experience unintended operation due to test impulse currents. Also when the surges is injected from the load side, a lot of the surge currents is split into the SPD, but a half of test specimens causes nuisance trip. Coordination between SPD and RCD is not valid. When installing SPD, it is important to select SPD after due consideration of the protection voltage level of metal oxide varistor embedded in RCD. It is expected that the results obtained from this work could be useful to improve the protection effects of SPD in low-voltage distribution systems.
Prevention Techniques of Electrical Fire and Electrical Shock Caused by Leakage Current
Kim, Dong-Woo ; Lim, Young-Bea ; Lee, Sang-Ick ; Kim, Jae-Hyun ; Kang, Dae-Chul ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 82~87
DOI : 10.5207/JIEIE.2013.27.6.082
Electrical leakage happens when faults in electrical apparatus or power lines occur. It causes electrical fires and electric shocks. In order to reduce accidents caused by electrical leakage current, it is important to detect faults effectively and shut off the power. In this paper, firstly we analyzed statistics of electrical fires and electric shocks caused by electrical leakage current. Secondly, standards of allowable leakage current and body impedance models were analyzed. Lastly, effective application methods for breaking electrical leakage current were suggested. The results will provide useful preventive measures of electrical fires and electric shocks caused by electrical leakage.
Capacitive Touch Switch Regardless of Operating Frequency Using a Switched-Capacitor
Lee, Mu-Jin ; Seong, Kwang-Su ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 88~94
DOI : 10.5207/JIEIE.2013.27.6.088
This paper proposes a capacitive touch switch using a switched-capacitor. The proposed method charges capacitance for measurement using the switched-capacitor until the voltage across the capacitance reaches a threshold voltage. As the proposed method uses the number of times being charged to measure the capacitance, the method has no relation with the operating frequency of the switched-capacitor. This paper also shows the quantization resolution of the proposed method is related to the capacitance in the switched-capacitor and the threshold voltage, i.e., the resolution is improved when the capacitance in the switched-capacitor is decreased and the threshold voltage is increased. Simulation result shows the method gives 31fF quantization resolution when the capacitance in the switched-capacitor is 50fF and threshold voltage is 80% of the supply voltage.
A Study on Feasibility of the Phosphoric Acid Doping for Solar Cell Using Newly Atmospheric Pressure Plasma Source
Cho, I-Hyun ; Yun, Myoung-Soo ; Jo, Tae-Hoon ; Kwon, Gi-Chung ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 27, issue 6, 2013, Pages 95~99
DOI : 10.5207/JIEIE.2013.27.6.095
Furnace is currently the most important doping process using POCl3 in solar cell. However furnace need an expensive equipment cost and it has to purge a poisonous gas. Moreover, furnace typically difficult appling for selective emitters. In this study, we developed a new atmospheric pressure plasma source, in this procedure, we research the atmospheric pressure plasma doping that dopant is phosphoric acid(
). Metal tube injected Ar gas was inputted 5 kV of a low frequency(scores of kHz) induced inverter, so plasma discharged at metal tube. We used the P type silicon wafer of solar cell. We regulated phosphoric acid(
) concentration on 10% and plasma treatment time is 90 s, 150 s, we experiment that plasma current is 70 mA. We check the doping depth that 287 nm at 90 s and 621 nm at 150 s. We analysis and measurement the doping profile by using SIMS(Secondary Ion Mass Spectroscopy). We calculate and grasp the sheet resistance using conventional sheet resistance formula, so there are 240 Ohm/sq at 90 s and 212 Ohm/sq at 150 s. We analysis oxygen and nitrogen profile of concentration compared with furnace to check the doped defect of atmosphere.