• Proceedings of the KIPE Conference
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• 2017.11a
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• pp.87-88
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• 2017

본 논문에서는 새로운 태양광 추적 시스템을 제안한다. 일반적으로 기존 감지식 태양광 추적 시스템은 광 센서를 이용하여 태양위치를 추적하는 방식으로 이루어 진다. 제안하는 시스템은 광 센서를 제거한 후 여러 개의 태양광 패널 각각 발전량을 비교하여 태양위치를 추적한다. 이러한 방법은 기존 태양광 추적 시스템의 많은 단점을 보완할 수 있다. 제안된 방법은 프로토 타입을 통해 검증하였다.

• Journal of IKEEE
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• v.22 no.3
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• pp.664-671
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• 2018

Generally, conventional solar tracking systems employ irradiance sensors to track a sun position, which enables the system to generate maximum solar energy. The usage of irradiance sensors increases system costs and deteriorates the performance of systems from sensor malfunctions. In this paper, a new solar tracking system without irradiance sensors has been proposed in which the controller capable of controlling and monitoring remotely is based on Artik platform. The proposed system tracks the sun position by comparing the amount of currents from several solar panels, resulting in removing irradiance sensors. In order to verify the performance of the proposed solar tracking method, the 12[V]-20[W] prototype system is built and implemented. Since the proposed system has remote monitoring functions through the employment of Artik as the IoT platform, more advantages in installation, maintenance and expanded functionality can be obtained compared to the conventional solar tracking system.

• Journal of the Korean Society of Marine Environment & Safety
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• v.21 no.5
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• pp.531-537
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• 2015

In order to maximize power output from the solar panels, one needs to keep the panels aligned with the sun. So solar tracker having high reliability must be designed. This paper cares about the design and evaluation of a two-axis solar tracker system based on fuzzy logic control with LabVIEW. The research focus on planning mechanical parts, making an intelligent controller which controls and monitors all parameters via user interface implemented of a fuzzy decision support system for control of photovoltaic panel movement. We also develop a real solar tracker system and analyze the influence indexes such as environment, weather, season, and light condition. The solar tracker is tested in real condition and all parameters related to the system operation are recorded and analyzed. The developed solar tracking system got a much higher efficiency about 38 % compare to fixed solar panel although the weather condition is affected a lot to the solar panel. So we confirmed the our auto tracking system is more effective and can allow more energy to be produced.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.14-16
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• 2012

본 논문은 단일 추적모듈과 무선 센서 네트워크를 이용한 내장형 태양광 추적시스템을 제안한다. 내장형 태양광 추적시스템은 조도 변화에 따라 단일 추적모듈로부터 도출된 회전값을 무선 센서 네트워크로 발전모듈에게 전달하여 태양전지를 동일하게 회전시키는 시스템이다. 추적모듈은 조도측정부의 양단 간 조도 값을 비교하여 회전값을 도출하고 항상 태양광과 프레임이 수직이 되도록 유지한다. 발전모듈은 전달받은 회전값을 적용하여 추적모듈과 동일한 방향으로 유지함으로 발전량을 최대화한다. 테스트베드를 개발하여 추적 실험을 통해 제안된 시스템의 타당성을 검증하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.10
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• pp.2072-2078
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• 2011

In photovoltaic(PV) system, for obtaining maximum efficiency of solar power systems, the solar tracking system must be controlled to match position of the sun. In this paper, we design the solar tracking system to track movement of the sun using CdS sensor modules and to determine direction of the sun under shadow of directions. In addition, for an intelligent computation in tracking of the sun, a fuzzy controller is allocated to space avaliable for splitting area of fuzzy part for the fuzzy input space(grid-type fuzzy partition) in which a fuzzy grid partition divides fuzzy rules bases. As well, a simple model of solar tracking system is designed by two-axis motor control systems and the 8-direction sensor module that can measure shadow from CdS sensor modules by matching of axis of CdS modules and PV panels. We demonstrate this systems is effective for fixed location and moving vessels and our fuzzy controller can track the satisfactorily.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.10
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• pp.36-44
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• 2009

This paper analyzes efficiency of photovoltaic(PV) tracking system using position solar algorithm(PSA). Solar location tracking system is needed for efficiently and intensively using PV system independent of environmental condition. PV tracking system of program method is presented a high tracking accuracy without the wrong operating in rapidly changing insolation by the clouds and atmospheric condition. Therefore, this paper analyzes efficiency of PV system using PSA algorithm for more correct position tracking of solar. Also, controlled altitude angle and azimuth angle by applied algorithm is compared with data of korea astronomy observatory. And this paper analyzes the tracking error and generation efficiency then proves the validity of applied algorithm.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.131-133
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• 2015

일반적으로, 태양광 발전은 최대한 오랜 시간 많은 양의 태양광을 받을 수 있는 방법이 중요하다. 본 연구에서는 태양광 수집 량을 높이기 위해 태양 전지판에 매트릭스 형태로 배치된 광센서의 조도차를 이용한 자동 태양광 추적 및 충전 시스템을 제안한다. 제안하는 시스템은 날씨 및 주변 환경의 조도 간섭 등과 같은 환경 상태정보를 광센서로부터 획득한 조도 정보와 함께 태양의 방향을 추적하기 위한 알고리즘에 적용한다. 본 시스템을 통해 사용자는 좁은 공간에서도 최대한의 태양광을 집적할 수 있으며, 적은 비용으로 효율성 있는 태양광 발전 시스템을 구축 할 수 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.577-578
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• 2011

본 연구는 태양광 시스템의 활용에 있어서 태양전지를 활용한 시스템의 구성은 태양에너지를 흡수하기 위하여 계절별 및 실시간으로 태양의 움직임을 추적 해 주는 시스템을 필요로 하며, 태양의 움직임에 따라 태양전지(태양열 판넬)의 방향을 안정적으로 제어하여 가장 효율이 높은 상태인 태양광과 수직으로 유지해 주는 시스템이 필요로 하고 있다. 본 논문은 계절 별 및 하루의 태양의 경로를 추적하여 태양광을 항상 수직으로 받을 수 있도록 집광판(광전변환:PV(Photovoltic))의 방향을 태양의 위치 좌표에 따라 정확한 위치로 제어하는 Fuzzy 알고리즘 기반의 2축 제어시스템을 설계하고자 한다.

• The Transactions of the Korean Institute of Power Electronics
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• v.11 no.6
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• pp.508-519
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• 2006

In solar power system, the height and azimuth of the sun are important parameters which control generated power magnitude. The tracking method that controls the daily generation magnitude according to latitude and longitude using the two axles is often used in the existing sunlight tracking system today. In this two-axle PV track control system, the self-load is concentrated on one FRAME. It is influenced of the regular load, snow load and the wind load, etc. It is difficult to set up the system in the conventional building. This research is a development about the small-scale economy track device of independent load-dispersing solar generation system. The position tracking algorithm is through the new coordinates transformation calculating the height and azimuth of the sun.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.22 no.6
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• pp.89-99
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• 2008

In this paper proposes a novel tacking algorithm regarding the power loss when operating a tracking system for a rapidly changing insolation to improve the power of PV hacking system. The tracking system of sensor method used in a conventional PV power station is unable to exactly track a sun position when lacking in the intensity of radiation and has the problem is malfunction of tracking system by a rapidly changing climatic. The tracking system of program method spends too much energy on the unnecessary operation of tracking system because that is unable to adapt itself to a outside factor of climatic environment. In case of tracking an azimuth and altitude of the sun in realtime, therefore, the actual PV power is less increasing than the power of tracking system fixed a specific position. To reduce the power loss, this pap proposes a novel control algorithm of the tracking system. Also, this paper is analyzed efficiency of traditional solar tracking method and proposed method, prove validity of proposed algorithm through demonstrable study.