• Journal of information and communication convergence engineering
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• 제8권4호
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• pp.443-448
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• 2010

The electrical curtain is an electronic product which is most suitable for the sphere of intelligent home network. It provides the basic feature of intelligent home network such as the followings; various functions, powerful control. It also becomes the ideal technology with inexpensive power-line protocol, energy saving and solar power generation. Generally it is a suitable motor for BLDC to move the electrical curtain, because it provides the maintenance without difficulty, long-lived use with good efficiency. On this paper, we proposed the BLDC motor controller designed by CDM(Coefficient Diagram Method) and evaluated its performance with a simulation of the plant, designed the electrical curtain using BLDC motor and powe-line protocol.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 춘계학술대회
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• pp.763-766
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• 2009

The electrical curtain is an electronic product which is most suitable for the sphere of intelligent home network. It provides the basic feature of intelligent home network such as the followings; various functions, powerful control. It also becomes the ideal technology with inexpensive power-line protocol, energy saving and solar power generation. Generally it is a suitable motor for BLDC to move the electrical curtain, because it provides the maintenance without difficulty, long-lived use with good efficiency. On this paper, we proposed the BLDC motor controller desinged by CDM(Coefficient Diagram Method) and evaluated its performance with a simulation of the plant, designed the electrical curtain using BLDC motor and powe-line protocol.

• 대한토목학회논문집
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• 제3권3호
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• pp.87-94
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• 1983

지하유류비축공동(地下油類備蓄空洞)의 성패(成敗)는 공동상부(空洞上部)에 충분(充分)한 수두(水頭)를 유지(維持)하여 공동주위(空洞周圍)의 수밀성(水密性)을 보장(保障)하는 데 있다. 공동상부(空洞上部)에 충분(充分)한 수두(水頭)가 유지(維持)되면 저장(貯藏)된 유류(油類)의 Gas가 누출(漏出)되지 않으며, 인접공동(隣接空洞)이 비어있을 때에도 이곳으로 유류(油類)는 이동(移動)되지 않는다. 본(本) 연구(硏究)에서는 전기상사모형실험(電氣相似模型實驗)을 통(通)하여 수평(水平) 및 수직(垂直) Water Curtain을 설치(設置)하여 Gas 누출(漏出)과 유류이동(油類移動)을 방지(防止)하려 할 때 효과적(効果的)인 Water Curtain의 위치(位置), 인접공동간격(隣接空洞間隔) Water Curtain 수두(水頭), Bore-hole 간격 등이 검토(檢討)되었다. 연구결과(硏究結果) 공동(空洞)의 간격(間隔)이 좁으면 수직(垂直) Water Curtain은 꼭 설치(設置)되어야 하며, 공동간격(空洞間隔)이 공동(空洞) 높이의 2배 이상 커지면 수직(垂直) Water Curtain은 필요(必要)없다는 것이 입증(立證)되었고 유류이동(油類移動)을 방지(防止)하는데 필요(必要)한 수평(水平) 및 수직(垂直) Water Curtain의 위치(位置), Water Curtain 수두(水頭), Bore hole 간격 등이 도표(圖表)로 주어졌다.

• 한국태양에너지학회 논문집
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• 제33권3호
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• pp.107-113
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• 2013

In this study, three different types of experimental models of BIPV curtain wall units with GIGS modules were built, and their thermal and electrical performances were analyzed. The experimental results showed that the temperature of the rear side of the GIGS module with the application of an insulation in the curtain wall spandrels was higher than a GIGS module standalone by $22^{\circ}C$, which results in a reduction in the power generation of the former by 8 %. On the other hand, when ventilation was applied to the model to improve the power generation performance, the module temperature was observed to be $142^{\circ}C$ lower compared to the enclosed type, and the power generation performance improved by 5 %. It confirmed that the temperature increase in the rear side of the GIGS module with insulation layer reduced the electrical performance of the module. Based on this, it is claimed that providing sufficient ventilation at the GIGS applied spandrels contribute to improve the power generation of the GIGS module.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 G
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• pp.3233-3235
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• 1999

This paper describes development of a microprocessor-based optoelectronic guard system established a higher level of control reliability in machine guard design. The system uses the design concept of diverse redundancy and a fast software algorithm. We have accomplished an safety light curtain system that allows to be intentionally disabled moving machine by the interrupt of dangerous situations. As a result, it is showed that the proposed system is effective enough to practical applications.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 B
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• pp.1465-1467
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• 2004

In this paper, deduced manufacturing condition of glass/glass curtain wall module and metal curtain wall module. From the results. lamination condition of glass/glass curtain wall module deduced optimum in pumping $time-120^{\circ}C$ 23min, slow $press-120^{\circ}C$. 300mmHg. 3min. standard $press-120^{\circ}C$. 200mmHg. 0.5min. fast $press-120^{\circ}C$. 100mmHg. 0.3min and $curing-140^{\circ}C$, 6min, and lamination condition of metal curtain wall module deduced optimum in pumping $time-120^{\circ}C$. 8min, slow $press-120^{\circ}C$, 700mmHg. 0.5min, standard $press-120^{\circ}C$, 600mmHg, 0.5min. fast $press-120^{\circ}C$, 100mmHg. 1.5min and $curing-140^{\circ}C$. 6min. This time. power uniformity of glass/glass curtain wall module and metal curtain wall module showed each ${\pm}2.7\%,\;{\pm}2.12\%$.

• 조명전기설비학회논문지
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• 제18권1호
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• pp.154-160
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• 2004

본 논문에서는 공간 외부의 원거리에 위치하는 소음원에 의하여, 창문 등을 통해 실내 공간에 소음이 전파될 때, 능동소음제어 기법을 이용하여 이를 제어하는 능동 방음막 (active noise curtain)을 구현하였다. 적응필터 알고리즘으로 다중채널 LMS 알고리즘을 사용하는 기법과 소음원이 원거리에 있을 때는 소음의 특성이 평면파에 가깝다는 가정 하에 제어용 스피커 수만큼의 단일채널 LMS 알고리즘을 사용하는 기법을 제시하였으며 적응필터의 안정도를 향상시키기 위하여 IIR 필터의 안정도를 향상시키는 안정화 기법을 제안하였다. TMS320VC33 DSP보드를 이용하여 제안된 기법을 정현파 소음 및 도로 소음에 대해 실험을 수행한 결과 MCLMS를 사용한 경우와 유사하거나 다소 나은 결과를 보였으며 제안한 기법이 실제 적용 시에는 제어용 스피커와 마이크로폰을 일체형으로 제작이 가능하여 하드웨어 실현에 유리하고 설치비도 절약되리라 예상된다.

• 한국태양에너지학회 논문집
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• 제32권6호
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• pp.120-126
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• 2012

BIPV is applied to buildings in various forms. However, there are some aspects of consideration in applying PV systems in buildings, such as attaching methods, PV electrical efficiency, appearance and so on. BIPV can be installed on curtain wall spandrel as finishing material, which may combine with insulation. The thermal characteristic of spandrel with BIPV has rarely been studied; the temperature of air space between PV module and insulation layer affects both the electrical behavior of PV module and the energy load in a building. This paper aims to analyse the temperature variation of the layers in BIPV spandrels. In this paper, the temperature of layers, including the air space and PV module, was measured for three different type of BIPV applications on spandrel. The results show that the temperature of air layer for the spandrel with G/G(2) type BIPV module on October was the highest among other months.

• 한국태양에너지학회 논문집
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• 제37권2호
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• pp.47-57
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• 2017

CIGS thin film solar cells are technically suitable for BIPV applications than regularly used crystalline silicon solar cells. Particularly, CIGS PV has lower temperature coefficient than crystalline silicon PV, thus decrease in power generation is lowered in CIGS PV. Moreover, CIGS PV can decrease shading loss when applied to the BIPV system, and the total annual power generation is higher than crystalline silicon. However, there are few studies on the installation factors affecting the performance of BIPV system with CIGS module. In this study, BIPV curtain wall unit with CIGS PV module was designed. To prevent increase of temperature of CIGS PV module by solar radiation, ventilation was considered at the backside of the unit. The thermal specification and electrical performance of CIGS PV of the ventilated unit was analyzed experimentally. Non-ventilated unit was also investigated and compared with ventilated unit. The results showed that the average CIGS temperature of the ventilated curtain wall unit was $6.8^{\circ}C$ lower than non-ventilated type and the efficiency and power generation performance of ventilated CIGS PV on average was, respectively, about 6% and 5.8% higher than the non-ventilated type.

• 한국태양에너지학회 논문집
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• 제35권4호
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• pp.57-66
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• 2015

BIPV system not only produces electricity at building, but also acts as a material for building envelope. Thus, it can increase the economical efficiency of PV system by saving the cost for building materials. Bifacial solar cell can convert solar energy to electrical energy from both sides of the cell. In addition, it is designed as 3 busbar layout which is the same with ordinary mono-facial solar cells. Therefore, many of the module manufacturers can easily use the bifacial solar cells without changing their manufacturing equipments. Moreover, bifacial PV system has much potential in building application by utilizing glass-to-glass structure of PV module. However, the electrical generation of the bifacial PV module depends on the characteristics of the building surface which faces the module, as well as outdoor environment. Therefore, in order to apply the bifacial PV module to building envelope as BIPV system, its power generation characteristics are carefully evaluated. For this purpose this study focused on the electrical performance of the bifacial BIPV system through the comparative outdoor experiments. As a result, the power generation performance of the bifacial BIPV system was improved by up to 21% compared to that of the monofacial BIPV system. Therefore, it is claimed that the bifacial BIPV system can replace the conventional BIPV system to improve the PV power generation in buildings.