• Journal of international Conference on Electrical Machines and Systems
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• 제1권2호
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• pp.111-115
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• 2012

In this paper, a solar energy powered bicycle linked to a wireless sensor network (WSN) which monitors the transfer of solar energy to an electrical energy storage unit and an analysis of its effectiveness is proposed. In order to achieve this goal, a solar-powered bicycle with an attached ZigBee and a far-end wireless network supervisory system is setup. Experimental results prove that our prototype, solar energy powered bicycle, can achieve enough solar energy for charging a two lead-acid battery pack. As a result, the user, through use of a wireless network in the parking period can be kept aware of the data on the amount of immediate solar radiation, the degree of illumination, the ambient temperature, and electrical energy storage capacity information of the bicycle through an internet interface.

• 한국태양에너지학회 논문집
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• 제29권4호
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• pp.15-21
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• 2009

Since the solar radiation is main input for sizing any solar photovoltaic system and solar thermal power system, it will be necessary to understand and evaluate the insolation data. The Korea Institute of Energy Research(KIER) has begun collecting horizontal global insolation data since May, 1982 and direct normal insolation data since December 1992 at 16 different locations. Because of a poor reliability of existing data, KIER's new data will be extensively used by solar energy system users as well as by research institutes. Among some significant results, the yearly averaged horizontal global insolation was turned out 3.60 kWh/$m^2$/day and the yearly mean 2.62 kWh/$m^2$/day of the direct normal insolation was evaluated for all days.

• 한국태양에너지학회 논문집
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• 제21권3호
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• pp.19-24
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• 2001

The amount of incident solar rays on inclined surfaces with various directions has been widely utilized as important data in installing solar collector, hot water system, and photovoltaic module, and designing solar buildings and house. This is because the performance of the solar energy applied systems is much affected by angle and direction of incident rays. Recognizing those factors mentioned above are of importance, actual experiment has been peformed in this research to obtain the angle of inclination with which the maximum incident rays can be absorbed. The results obtained in this research could be used in designing optimal solar systems.

• 한국태양에너지학회 논문집
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• 제30권5호
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• pp.69-76
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• 2010

In this study, the solar thermal and geo-source heat pump(GSHP) hybrid system for heating and cooling of Zero Energy Solar House(ZESH) was analyzed by experiment. The GSHP in this hybrid system works like as aback-up device for solar thermal system. This hybrid system was designed and installed for Zero Energy Solar House (KIER ZeSH) in Korea Institute of Energy Research. The purpose of this study is to find out that this system is optimized and operated normally for the heating load of ZeSH. The analysis was conducted as followings ; - the thermal performance of facade integrated solar collector - the on/off characteristics of solar system and GSHP - the contribution of solar thermal system. - the performance of solar thermal and ground source heat pump system respectively. - the meet of thermal load (space and water heating load). This experimental study could be useful for the optimization of this system as well as its application in house. This hybrid system could be commercialized for the green home if it is developed to a package type.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 춘계학술대회
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• pp.593-596
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• 2006

This paper introduces various natural energy systems installed at the Eco-Science Center in Geumsan near Taejon. The center, especially, features different solar energy systems to harvest the solar energy to its full extent. Such passive schemes as direct gain and at lacked sun space are applied along with active solar ingredients using flat plate and double skin solar collectors. Space and water heating depends very little on the conventional means. Also a number of photovoltaic modules deployed within its premise supplies power to drive a water pump for the biotop. Combined with other natural energy utilizing systems, the solar energy systems make an exemplary model of a self sustainable public facility which is the first of its kind in Korea.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2011년도 추계학술발표대회 논문집
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• pp.342-347
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• 2011

Solar energy is attenuated by absorbing gases (ozone, aerosol, water vapour and mixed gas) and cloud in the atmosphere. And these are measured with solar instruments (pyranometer, phyheliometer). However, solar energy is insufficient to represent detailed energy distribution, because the distributions of instruments are limited on spatial. If input data of solar radiation model is accurate, the solar energy reaches at the surface can be calculated accurately. Recently a variety of satellite measurements are available to TERA/AQUA (MODIS), AURA (OMI) and geostationary satellites (GMS-5, GOES-9, MTSAT-1R, MTSAT-2 and COMS). Input data of solar radiation model can be used aerosols and surface albedo of MODIS, total ozone amount of OMI and cloud fraction of meteorological geostationary satellite. The solar energy reaches to the surface is calculated hourly by solar radiation model and those are accumulated monthly and annual. And these results are verified the spatial distribution and validated with ground observations.

• 예술인문사회 융합 멀티미디어 논문지
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• 제9권5호
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• pp.865-872
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• 2019

본 논문은 한국교통대학교 태양광 자작 자동차 동아리 늘해랑에서 WSC(World Solar Challenge)에 참가하기 위해 제작한 Solar Car 구동시스템에 대하여 서술한다. WSC는 세계 최대의 태양광 자동차 경주 대회로 별도의 자동차 규정을 가지고 있어 태양전지 면적이나 배터리 용량등에 제약을 두기 때문에, 제한된 규정내에서 최대 에너지 효율을 가지도록 구동시스템을 설계하는 것이 가장 중요한 기술적인 팩터이다. Solar car의 구동시스템은 태양광 에너지를 전기 에너지로 변환해주기 위한 solar array, 변환된 전기에너지를 최대 출력으로 추적하기 위한 MPPT(Maximum Power Point Tracker) controller, 생산된 전기에너지를 저장하기 위한 battery, 전기에너지를 역학에너지로 변환하여 차량 구동을 위한 BLDC(Brushless DC) motor, BLDC motor를 제어하기 위한 motor controller 등으로 구성되어 있다. 본 연구에서는 최적 구동 시스템을 위해 태양전지 에너지 변환 시스템과 배터리, 모터로 구성된 전기 구동시스템 설계에 대한 내용을 포함하고 있다.

• 한국태양에너지학회 논문집
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• 제24권1호
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• pp.1-6
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• 2004

To evaluate performance of concentrating solar cookers, we have designed and constructed parabolic solar cooker. Tests are carried out to define the performance characteristic of concentrating cookers under the ambient conditions. Performance and test of solar cooker were followed the international standard procedure that was proposed at the Third World Conference on solar cooking Stagnation temperature and water heating test are carried out to determine the maximum temperature attained by cooker and evaluate the thermal performance of the cooker, respectively.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2009년도 춘계학술발표대회 논문집
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• pp.3-7
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• 2009

The amount of incident rays over inclination according to direction has been widely utilized as important data in installing solar thermal systems. To optimize the incident solar radiation, the slope, that is the angle between the plane surface in question and the horizontal, and the solar azimuth angles are needed for these solar thermal systems. This is because the performance of the solar thermal systems in much affected by angle and direction of incident rays. Recognizing that factors mentioned above are of importance, actual experiment on the moving route of the sun have been performed in this research to obtain the angle of inclination with which the maximum incident rays can be absorbed. After all, the standard for designing highly optimized solar thermal systems will be provided for designers and employees working in the solar collector related industries.

• 한국고분자학회지:고분자과학과기술
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• 제22권6호
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• pp.570-576
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• 2011