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  • Title/Summary/Keyword: A photovoltaic system

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A Study on Optimizer for Building Integrated Photovoltaic System of Energy Independent House (독립형 에너지 하우스 전력시스템에서의 BIPV용 Optimizer에 대한 연구)

  • Cho, Young-Chan;Shin, Duck-Shick
    • Proceedings of the KIPE Conference
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    • 2018.11a
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    • pp.229-230
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    • 2018
  • 본 논문은 태양광 기반의 '독립형 에너지 하우스'의 전체 전력 시스템과 태양광 외장재 모듈의 에너지를 효율적으로 최대 수급하기 위한 BIPV(Building Integrated PV)용 Optimizer의 개발에 대해 기술한다.

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Transmission Loss from Voltage Drop in a DC Cable for a Floating Photovoltaic System in a Reservoir (저수지 내 수상태양광의 전압 강하에 의한 직류 송전 손실)

  • Bhang, Byeong Gwan;Woo, Sung Cheol;Lee, Wonbin;Choi, Jin Ho;Shin, SeungWook;Lee, ChulSung;Park, MiLan;Won, Changsub;Ahn, HyungKeun
    • New & Renewable Energy
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    • v.16 no.1
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    • pp.47-57
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    • 2020
  • In Floating PV (Photovoltaic) systems, PV modules are installed on water by utilizing the surface of idle water such as a reservoir and multipurpose dam. A floating PV system, therefore, has the advantage of efficiency in national land use and improved energy yield owing to cooling effect compared to on-land PV systems. Owing to the limitation of installation environment for a floating PV system, the system, however, has the disadvantage of an increase in transmission distance of DC (Direct current) cables. A longer transmission distance of a DC cable results in greater power loss due to a voltage drop. This leads to a decline in economic feasibility for the floating PV system. In this paper, the economic analysis for 10 floating PV systems installed in a reservoir has been conducted in terms of a change in annual power sales according to the variation of transmission losses depending on the factors affecting the voltage drop, such as transmission distance, cross-section area of underwater cable, the presence of joint box, and PV capacity.

태양광 발전 시스템을 위한 원격 통합 모니터링 시스템의 구축 및 운영분석

  • Hong, Seong-Min;Lee, Yong-Ho;Sim, Heon
    • 한국신재생에너지학회:학술대회논문집
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    • 2005.11a
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    • pp.182-190
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    • 2005
  • This paper proposes central monitoring system(PVCMS) based on a TCP/IP network for effective integrating management about photovoltaic systems. We don't gain confidence the result of production simulation, because the output of PV system have many various environmental change factor. So if we can obtain real operated data about each sites and system types to use PVCMS, we can define the environment change factor to compare with simulation data. And this paper try to access about total management and data analysis methods of renewable energy through results analysis to synthesize of the operation.

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Fuzzy Controller Design of PC Based for Solar Tracking System (태양 추적시스템을 위한 PC 기반의 퍼지제어기 설계)

  • Chung, Dong-Hwa;Choi, Jung-Sik;Ko, Jae-Sub
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.22 no.5
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    • pp.86-94
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    • 2008
  • In this paper proposed the solar tracking system to use a fuzzy based on PC in of order to increase an output of the PV(Photovoltaic) array. The solar tracking system operated two DC motors driving by signal of photo sensor. The control of dual axes is not an easy task due to nonlinear dynamics and unavailability of the parameters. Recently, artificial intelligent control of the fuzzy control, neural-network and genetic algorithm etc. have been studies. The fuzzy control made a nonlinear dynamics to well perform and had a robust and highly efficient characteristic about a parameter variable as well as a nonlinear characteristic. Hence the fuzzy control was used to perform the tracking system after comparing with error values of setting-up, nonlinear altitude and azimuth. In this paper designed a fuzzy controller for improving output of PV array and evaluated comparison with efficient of conventional PI controller. The data which were obtained by experiment were able to show a validity of the proposed controller.

Photovoltaic Generation System Control Using Space Vector PWM Method (공간벡터 PWM 방식을 이용한 태양광 발전 시스템 제어)

  • Cho, Moon-Taek;Choi, Hae-Gill;Lee, Chung-Sik;Baek, Jong-Mu
    • Journal of the Korean Society of Radiology
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    • v.4 no.3
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    • pp.31-37
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    • 2010
  • In this paper, a photovoltaic system is designed with PWM(Pulse Width Modulation) voltage source inverter. Proposed synchronous signal and control signal was processed by 56F8323 microprocessor for stable modulation. The PWM voltage source inverter using inverter consists of complex type of electric power converter to compensate for the defect, that is solar cell cannot be developed continuously by connecting with the source of electric power for ordinary use. It can cause the effect of saving electric power, from 10 to 20[%]. The PWM voltage source inverter operates in situation that its output voltage is in same phase with the utility voltage. In addition, I connected extra power to the system through operation the system voltage and inverter power in a synchronized way by extracting the system voltage so that the phase of the system and PWM voltage inverter can be synchronized. In the system of this research showed good results after being controlled in order to provide stable power to the load and the system through maintaining and low output power of harmonics.

3-Point MPPT Algorithm under Dynamic Irradiation for Photovoltaic PCS (일사량 급변 시 유용한 3-Point 태양광 인버터 MPPT 알고리즘)

  • Kim, Dong-Gyun;Park, Kwan-nam;Cho, Sang-Yoon;Lee, Young-Kwoun;Yu, Gwon-Jong;Song, Seung-Ho;Choy, Ick;Choi, Ju-Yeop
    • Proceedings of the KIPE Conference
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    • 2016.07a
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    • pp.469-470
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    • 2016
  • Since efficiency of maximum power point tracking (MPPT) is important for photovoltaic systems, a number of MPPT algorithms have already been researched for other environment, however, the most of MPPT algorithms can't track maximum point in dynamic irradiation. In this paper, P&O and 3-Point MPPT which is more specialized in dynamic irradiation are compared in basis of European Efficiency Test(EN50530). The efficiency of 3-Point MPPT algorithm is proved by simulation and experiment. In result, 3-Point MPPT shows higher efficiency in dynamic irradiation and less affected by environment than P&O.

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Type-2 Fuzzy Logic Optimum PV/inverter Sizing Ratio for Grid-connected PV Systems: Application to Selected Algerian Locations

  • Makhloufi, S.;Abdessemed, R.
    • Journal of Electrical Engineering and Technology
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    • v.6 no.6
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    • pp.731-741
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    • 2011
  • Conventional methodologies (empirical, analytical, numerical, hybrid, etc.) for sizing photovoltaic (PV) systems cannot be used when the relevant meteorological data are not available. To overcome this situation, modern methods based on artificial intelligence techniques have been developed for sizing the PV systems. In the present study, the optimum PV/inverter sizing ratio for grid-connected PV systems with orientation due south and inclination angles of 45 and 60 in selected Algerian locations was determined in terms of total system output using type-2 fuzzy logic. Because measured data for the locations chosen were not available, a year of synthetic hourly meteorological data for each location generated by the PVSYST software was used in the simulation.

The Characteristic of MPPT Control for Photovoltaic System by Temperature Compensation Effect using Fuzzy Controller (퍼지제어기에 의한 온도보상효과를 고려한 태양광 발전 시스템의 MPPT제어 특성)

  • Kang, Byung-Bog;Cha, In-Su;Yu, Gwon-Jong;Jung, Myung-Woong;Song, Jin-Soo
    • Proceedings of the KIEE Conference
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    • 1995.11a
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    • pp.238-241
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    • 1995
  • In this paper, a new Maximum Power Point Tractor (MPPT) using Fuzzy Controller is proposed to improve energy convention efficiency. Temperature compensation effect means the photovoltaic voltage is change in condition irradiation, temperature and etc. Fuzzy algorithm is applied to control Boost MPPT converter by Temperature compensation effect. Temperature compensation range is 40+100C.

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