• 전력전자학회:학술대회논문집
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• 전력전자학회 2005년도 전력전자학술대회 논문집
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• pp.720-722
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• 2005

A photovoltaic panel is a device that, through the photovoltaic effect, converts luminous energy into electric energy. Photovoltaic generation system uses infinity of solar energy, cost of fuel is needless and there is no all pollution or waste occurrence. This paper summarizes the results of these efforts by offering a photovoltaic system structure in 50kW large scale applications installed In Chosun University dormitory roof. The status of PV system components, are inter-connection and safety equipment monitoring system will be summarized as this article. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory In this paper represent 50kw utility PV system examination result

• 조명전기설비학회논문지
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• 제17권6호
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• pp.23-30
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• 2003

본 논문에서는 계통과 원활히 동작할 수 있는 계통 연계형 태양광 발전시스템에 대한 특성을 해석하고 이론을 바탕으로 제작된 실 시스템을 적용$.$운용시 시스템의 운전특성 및 발전량을 비교 분석하였다. 그 결과로서 구조적인 문제점과 관리적인 문제점을 도출하고, 이러한 문제점에 대한 대책으로서 설치될 장소의 장기적인 일사량 측정 데이터수집을 동하여 최적의 일사량을 얻을 수 있는 지역설정과 최적의 설치형태를 설계함으로서 발전효율을 높일 수 있다. 또한, 운영시스템 및 모니터링 관리가 현행의 OS시스템으로서는 해결이 불가능한것을 전용의 OS개발과 데이터 백업 시스템을 구축함으로서 실 시스템 운용상의 문제점을 해결할 수 있었다.

• 조명전기설비학회논문지
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• 제22권7호
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• pp.7-15
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• 2008

A single active capacitor snubber-assisted soft-switching sinewave pulse modulation utility-interactive power conditioner with a three-winding flyback high frequency transformer link and a bidirectional active power switch in its secondary side has been proposed. With the aid of the switched-capacitor quasi-resonant snubber cell, the high frequency switching devices in the primary side of the proposed DC-to-AC sinewave power inverter can be turned-off with ZVS commutation. In addition to this, the proposed power conditioner in the DCM can effectively take the advantages of ZCS turn-on commutation. Its output port is connected directly to the utility AC power source grid. At the end, the prototype of the proposed HF-UPC is built and tested in experiment. Its power conversion conditioning and processing circuit with a high frequency flyback transformer link is verified and the output sinewave current is qualified in accordance with the power quality guidelines of the utility AC interactive power systems.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 정기총회 및 학술대회 전문대학교육위원
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• pp.157-159
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• 2008

This paper summarizes the results of these efforts by offering a photovoltaic system structure in 50kW. The combination of photovoltaic system components are interconnected and system monitoring system will be summarized for the purpose of the increasing safety in this article. This paper describes configuration of utility interactive photovoltaic system which generated electric power supplies to dormitory. In order to installing the middle or large scale photovoltaic system, It must investigated the optimal design of system, compute quantity of power generation, economic rate of return and so on. In this paper represent 50kW utility photovoltaic system examination, developed simulation results and financial analysis. The performance of photovoltaic system has been evaluated, analyzed with simulation and financial analysis results. The results obtained in this research will be much useful to prior investigation for installing utility interactive photovoltaic system.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2001년도 Proceedings ICPE 01 2001 International Conference on Power Electronics
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• pp.668-672
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• 2001

The utility interactive sinewave modulated inverter for the solar photovoltaic (PV) power conversion and conditioning with a new high frequency pulse modulated link is presented for domestic residential applications. As compared with the conventional full-bridge hard switching PWM inverter with a high frequency AC link, the simplest single-ended quasi-resonant soft switching sinewave modulated inverter with a duty cycle pulse control is implemented, resulting in size and weight reduction and low-cost. This paper presents a prototype circuit of the single-ended zero voltage soft switching sinewave inverter for solar power conditioner and its operating principle. In addition, this paper proposes a control system to deliver high quality output current. Major design of each component and the power loss analysis under actual power processing is also discussed from an experimental point of view. A newly developed interactive sinewave power processor which has $92.5\%$ efficiencty at 4kW output is demonstrated. It is designed 540mm-300mm-125mm in size, and 20kg in weight.

• International Journal of Advanced Culture Technology
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• 제10권1호
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• pp.122-130
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• 2022

In modern times, text has become an image, and typography is a style that is a combination of image and text that can be easily encountered in everyday life. It is developing not only for the purpose of conveying meaningful communication, but also to bring joy and beauty to our lives as a medium with aesthetic format. This study shows through case analysis that typography is a tool for expressing human emotions, and investigates its characteristics that change along with the media. In particular, interactive communication tools and methods used by interactive typography to express viewers' emotions are described in detail. We created interactive typography using the inputted text, the selected music by the viewer and the viewer's movement. As a result of applying it to the exhibition, we could confirm that interactive typography can function as an effective communication medium that shows the utility of both the iconography of letter signs and the cognitive function when combined with the audience's intentional motion.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2004년도 춘계 종합학술대회 논문집
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• pp.566-574
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• 2004

브라우저의 발달과 플래시의 발달로 최근에는 동적인 화면과 인터페이스에 대한 두려움이 일반 사용자들에게도 많이 줄어들고 있다. 또한 플래시의 발달함에 따라 이제 웹은 사용자들의 참여를 유도함으로써 웹만의 고유한 인터렉티브(interactive)하고 동적인 디자인이 부각되고 있다. 따라서, 이 논문을 통해 이러한 인터렉티브한 사이트들의 레이아웃에 대해 유형별로 분석하여 현 실태를 파악하고 디자인적 방법론과 플래시의 유용성에 대해 알아보고자 한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 B
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• pp.1335-1337
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• 2002

This paper presents experimental operation with utility interactive 50kw photovoltaic generation system. And that describe configuration of utility interactive photovoltaic system which power supply for dormitory. The status of photovoltaic generation system components and interconnection and safety equipment will be summarized. This paper discusses property operation state which system endure division of power for dormitory.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2011년도 추계학술대회
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• pp.229-230
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• 2011

This paper presents deadbeat controller for output current in the utility-interactive inverter. The time delay related with deadbeat controller is compensated by using prediction control. By computer simulation and experiment, the dynamic characteristics of deadbeat controller is verified.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 F
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• pp.1948-1950
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• 1997

In this paper, we compose of the single current source inverter for utility interactive photovoltaic system. According to insert parallel resonant circuit, the do reactor decreases the distortion of dc current and output current. Therefore, we decrease the do reactance and control modulation factor to operation at the maximum power point around of solar cell.