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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 29, Issue 12 - Dec 2015
Volume 29, Issue 11 - Nov 2015
Volume 29, Issue 10 - Oct 2015
Volume 29, Issue 9 - Sep 2015
Volume 29, Issue 8 - Aug 2015
Volume 29, Issue 7 - Jul 2015
Volume 29, Issue 6 - Jun 2015
Volume 29, Issue 5 - May 2015
Volume 29, Issue 4 - Apr 2015
Volume 29, Issue 3 - Mar 2015
Volume 29, Issue 2 - Feb 2015
Volume 29, Issue 1 - Jan 2015
Selecting the target year
Reliability Testing and Materials Evaluation of Si Sub-Mount based LED Package
Kim, Young-Pil ; Ko, Seok-Cheol ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 1~10
DOI : 10.5207/JIEIE.2015.29.4.001
The light emitting diodes(LED) package of new structure is proposed to promote the reliability and lifespan by maximize heat dissipation occurred on the chip. We designed and fabricated the LED packages mixing the advantages of chip on board(COB) based on conventional metal printed circuit board(PCB) and the merits of Si sub-mount using base as a substrate. The proposed LED package samples were selected for the superior efficiency of the material through the sealant properties, chip characteristics, and phosphor properties evaluations. Reliability test was conducted the thermal shock test and flux rate according to the usage time at room temperature, high-temperature operation, high-temperature operation, high-temperature storage, low-temperature storage, high-temperature and high-humidity storage. Reliability test result, the average flux rate was maintained at 97.04% for each items. Thus, the Si sub-mount based LED package is expected to be applicable to high power down-light type LED light sources.
Bidirectional Current Triggering in Two-Terminal Planar Device Based on Vanadium Dioxide Thin Film Using 1550nm Laser Diode
Lee, Yong Wook ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 11~17
DOI : 10.5207/JIEIE.2015.29.4.011
While most switching devices are based on PN junctions, a single layer can realize a switching device in the case of vanadium dioxide(
) thin films. In this paper, bidirectional current triggering(switching) is demonstrated in a two-terminal planar device based on a
thin film by illuminating the film with an infrared laser at 1550nm. To begin with, a two-terminal planar device, which had a
conducting layer and an electrode separation of
, was fabricated. A specific bias voltage range for stable bidirectional laser triggering was experimentally obtained by measuring the current-voltage characteristics of the fabricated device in a current-controlled mode. Then, by constructing a test circuit composed of the device, a standard resistor, and a DC voltage source, connected in series, the transient response of laser-triggered current and its response time were investigated with a DC bias voltage, included in the above specific bias voltage range, applied to the device. In the test circuit with a DC voltage source of 3.35V and a
resistor, bidirectional laser triggering could be realized with a maximum on-state current of 15mA and a switching contrast of ~78.95.
Study on Optimized Manual Development and Optimum Lighting System within Luminance-based Tunnel
Lee, Mi-Ae ; Kim, Yeon-Hwa ; Han, Seung-Hun ; Kim, Ji-Heon ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 18~29
DOI : 10.5207/JIEIE.2015.29.4.018
The purposes of this research and development are as follows: first, to provide pleasant driving environments inside tunnels; second, to improve the current illumination environments lacking in diffusion luminance meters to meet tunnel lighting standards; and, third, to reduce the consumption of tunnel lighting energy accounting for approximately 65% of tunnel maintenance costs because of inadequate visual environments and tunnel operations. Further details are listed below. Firstly, an image luminance meter for tunnels that can implement the L20-method which is a tunnel luminance method that follows the international standards of CIE88, which was developed in order to improve and change the existing illumination-based tunnel lighting operation system to a luminance-based system. (The margin of error of below 5% according to the results of a test by an authorized agency and field test). Secondly, early illumination control is possible since the lighting control system that can be operated based on luminance enables interlocking control of the inside and outside of a tunnel using ethernet communication. Thirdly, guidelines for field application of the system are proposed. In addition, the luminance inducers of tunnels are found and the reflexibility of each facility that may reduce luminance of the boundaries is also proposed. Fourthly, as a result of a test bed, power consumption of luminance-based lighting operations decreased by 15.6% compared to illumination-based operations. Applying the feedback controls and maintenance factors of internal/external luminance meters, it reduced by 36.4%. Therefore, we became able to provide a luminance-based lighting operation system that complies with tunnel lighting design standards and provides a visual environment for drivers.
The Optical Design and Simulation Results for LED Stage Lighting System
Park, Kwang-Woo ; Joo, Jae-Young ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 30~36
DOI : 10.5207/JIEIE.2015.29.4.030
The principle of an illumination and projection system including LED light sources for a spot type stage lighting system was presented, and its optical system was designed with optimizing parameters by the analytical methods. A dichroic mirror incorporated with an illumination system to optimizing LED source positions and to obtain the compact system. The projection system was optimized with specific constraints such as a chromatic aberration, distortion aberration and angle of incidence angles. Optimized design system has a beam angle from
, and its illuminance was 4,500lux at distance of 6m on the work plane.
A preliminary Study and suggested Evaluation Methodology for the Improved Fashion Shop Lighting Design using Museum Lighting Design
Ko, Tae-Kyoung ; Kim, In-Tae ; Choi, An-Seop ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 37~46
DOI : 10.5207/JIEIE.2015.29.4.037
Lighting in a fashion shop has an effect on customers, highlights the products on the shelf, and has become more important. Even though lighting has a significant effect on customers, the studies on fashion shop lighting have primarily focused on how to create lighting which can influence customers' purchase behavior, and their awareness and expectation. On the contrary, it's been hard to find a study on a quantified fashion shop lighting plan considering customer confidence. In a current fashion shop lighting plan, display lighting is planned indiscreetly. Therefore, this study conducted an investigation of the light environment of the current fashion shop and museum exhibits lighting. Through such processes, the possibility of applying fashion store display lighting environments was investigated. Finally, for the assessment of museum exhibitions lighting applying fashion store display lighting environments, a subjective evaluation method using light simulation was proposed.
A Study on Installation of Monitoring System of Wireless Power Transmission System
Song, Young-Sang ; Han, Woon-Ki ; Jung, Jin-Soo ; Lim, Hyun-Sung ; Cho, Sung-Koo ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 47~53
DOI : 10.5207/JIEIE.2015.29.4.047
The electrical safety and efficiency is the most important thing of the electric vehicle charging system. The prior system is contact charging system that is contacted directly by human. So, it has riskiness such as electric shock in the case of poor insulation or contact problems. To solve these safety issues and the convenience problems, a wireless power transmission system has been developed and is currently in trial operation. However, because high frequency is used in wireless power transmission system instead of commercial frequency, we need to apply protection measures concerning electric shock and equipment protection. Also, it should be accompanied by measuring efficiency for the effective operation of the wireless power transmission system. Therefore, we structured monitoring system in trial operation area of wireless power transmission system and applied decision algorithm for protection of human and equipment and economic operation of it.
A Reliability Analysis in LVDC Distribution System Considering Power Quality
Noh, Chul-Ho ; Kim, Chung-Mo ; Kim, Doo-Ung ; Gwon, Gi-Hyeon ; Oh, Yun-Sik ; Han, Jun ; Kim, Chul-Hwan ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 54~61
DOI : 10.5207/JIEIE.2015.29.4.054
Recently, DC-based power system is being paid attention as the solution for energy efficiency. As the example, HVDC (High Voltage DC) transmission system is utilized in the real power system. On the other hand, researches on LVDC (Low Voltage DC) distribution system, which are including digital loads, are not enough. In this paper, reliability in LVDC distribution system is analyzed according to the specific characteristics such as the arrangement of DC/DC converters and the number of poles. Furthermore, power quality is also taken account of since LVDC distribution system includes multiple sensitive loads and electric power converters. In order to achieve this, LVDC distribution systems are modeled using ElectroMagnetic Transient Program (EMTP) and both the minimal cut-set method and Customer Interruption Cost (CIC) are used in the reliability analysis.
A Study on the Subsynchronous Resonance by Flexible Frequency Operation
Cho, Yoon-Sung ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 62~68
DOI : 10.5207/JIEIE.2015.29.4.062
Subsynchronous Resonance is a condition where the electrical power systems composed of generator and transmission line exchange energy with mechanical turbine-generator system at the frequency of the combined below the subsynchronous frequency. Therefore, the frequency of power systems should be associated with the subsynchronous resonance. This paper describes subsynchronous resonance by flexible frequency operation. It focuses on the characteristics and behavior of subsynchronous resonance. The subsynchronous resonance is being conducted by real-time digital simulator and the IEEE benchmark model for subsynchronous resonance have been utilized for the test systems.
An Investigation on the Frequency Dependence of Soil Electrical Parameters
Lee, Bok-Hee ; Kim, Ki-Bok ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 69~76
DOI : 10.5207/JIEIE.2015.29.4.069
This paper presents the results of an investigation into the frequency-dependent electrical parameters for different types of soil as a function of moisture content. The frequency dependence of soil electrical parameters is very important in the design of grounding systems. In fact, the performance of grounding systems is greatly dependent upon various factors such as soil type, particle size, water content, temperature, frequency, and the like. The resistivity and relative permittivity for four different soils were measured and analyzed in the frequency range of 1kHz - 1MHz. Soil resistivity declined as moisture content and frequency increased. In particular, the frequency dependence of soil resistivity was significant as the moisture content was low. In contrast, the relative permittivity of soil dramatically declined at the frequency of 10kHz or below as the moisture content increased, showing the opposite pattern in terms of variation patterns, compared to resistivity.
Improving Sensitivity of the Pyroelectric Infrared Flame Detector
Song, Hyun Seon ; Lee, Yeu Yong ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 77~84
DOI : 10.5207/JIEIE.2015.29.4.077
PZT ceramics, usually used pyroelectric materials exhibited a relatively highly Curie temperture(Tc) of
and permittivity constant of 500-1600. In this paper, the pyroelectric infrared detectors are applied two different types of pyroelectric materials, that is tetragonal crystal of ferroelectric
and rhombohedral crystal of
. PZT ceramics shows not only highly Curie temperture but also excellent pyro and piezoelectric properties at the Zr/Ti(=52/48) ratio. Therefor in this paper, the pyroelectric infrared detectors are applied PZT ceramics, and obtained sensitive sensing characteristics by expriment case studies.
The Prediction of Total Revenue of V2G System Considering Battery Wear Cost
Won, Il-Kuen ; Kim, Do-Yun ; Ko, An-Yeol ; Shin, Chang-Hyun ; Hwang, Jun-Ha ; Kim, Young-Real ; Won, Chung-Yuen ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 85~94
DOI : 10.5207/JIEIE.2015.29.4.085
Recently, research on the smart grid that combines ICT(Information & Communication technology) to the power system has been actively progressed. If the occupancy of the EV(Electric vehicle) is increased. the V2G(Vehicle to grid) system is available which constitutes the micro-grid through battery of EV. V2G system performs load leveling and efficient energy consumption by battery operation considering load condition. But, if the battery is used only depending on the electricity rates, it doses not consider the life of the battery. The ACC(Achievable cycle) and the total transferable energy of battery varies corresponding to the selected DOD(Depth of discharge). In this paper, the optimal DOD selection method of V2G system considering battery wear cost and average driving distance of EV. Also, the total revenue prediction of various nation is presented considering the actual electricity costs per hour.
Soil Discharge Characteristics in Inhomogeneous Field Caused by Lightning Impulse Voltages
Yoo, Yang-Woo ; Kim, Seung-Min ; Kim, You-Ha ; Lee, Bok-Hee ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 95~101
DOI : 10.5207/JIEIE.2015.29.4.095
This paper presents experimental results about characteristics of soil discharge as a function of moisture content when the
lightning impulse voltage is applied. The laboratory experiments, for this study, were carried out based on factors affecting the transient behavior in soils. The electrical breakdown in soils was measured over a 0-6% range of moisture content for sands and a 0-4% range of moisture content for gravels. Needle-plane electrode systems was used As a result, the conduction current prior to ionization growth in dry soil is a little, but it in wet soil is increased with the applied voltage because the wet soil particles act as conductors. The soil impedance curves show an abrupt reduction just after breakdown. The general tendency measured in different soils is that the higher the water content, the lower the breakdown voltage and the shorter the time-lag to breakdown.
Modeling and Fault Simulation of Hydro Generator Control System
Park, Chul-Won ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 102~107
DOI : 10.5207/JIEIE.2015.29.4.102
In this paper, the generator control system by using PSCAD/EMTDC was modeled and several faults simulation were performed. The generator control system is composed of generator, turbine, exciter and governor. The parameters of generator control system model were obtained from field power plant. And then, the various transient phenomena through obtained several signal of developed modeling were analyzed.
A Study on Optimal Current Control Method for Small BLDC Motor Drive
Park, Chang-Seok ; Jung, Tae-Uk ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 108~115
DOI : 10.5207/JIEIE.2015.29.4.108
This paper proposed a optimal current control method to improve efficiency of BLDC motors. The aim of the proposed method is to use the maximum torque operating method by increasing the effective voltage at the maximum torque point unlike existing SPM operating method. The proposed method is based on existing IPM maximum torque operating method grafting onto a square wave operating of SPM motors. As the method of increasing the effective output voltage from inverter using the maximum torque point, the proposed method is to improve efficiency of BLDC motors using the same amount of the existing current effectively. For this method, the maximum torque point is carried out by FEA and analysis of magnetic flux vector. In this paper, the prototype of general-purpose BLDC drive is manufactured and the performance characteristic and validity are verified.
Coordination between Voltage-Limiting Surge Protective Devices in Surge Currents Caused by Direct Lightning Flashes
Shin, Hee-Kyung ; Lee, Jae-Suk ;
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, volume 29, issue 4, 2015, Pages 116~125
DOI : 10.5207/JIEIE.2015.29.4.116
This paper presents experimental results obtained from actual installation conditions of surge protective devices (SPDs), with the aim of understanding the coordination of cascaded Class I and Class II SPDs. This paper also proposes effective methods for selecting and installing coordinating cascaded SPDs. The residual voltage of each SPD and the energy sharing of an upstream Class I tested SPD and a downstream Class II tested SPD were measured using a
current wave. In coordinating a cascaded voltage-limiting SPD system, it was found that energy coordination can be achieved as long as the downstream SPD is a metal oxide varistor with a higher maximum continuous operating voltage than the upstream SPD; however, it is not the optimal condition for the voltage protection level. If the varistor voltage of the downstream SPD is equal to or lower than that of the upstream SPD, the precise voltage protection level is obtained. However, this may cause serious problems with regard to energy sharing. The coordination for energy sharing and voltage protection level is fairly achieved when the cascaded SPD system consists of two voltage-limiting SPDs separated by 3 m and with the same varistor voltage.