A study on development of rotary structure for tracking-type floating photovoltaic system

Choi, Young-Kwan; Lee, Young-Geun

doi:10.1007/s12541-014-0613-5

Cited by 34 publications

(19 citation statements)

References 5 publications

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“…Various researches have accompanied the growth of the floating PV market. In Korea, as in many countries around the world, several kinds of research on floating solar systems are being conducted, such as research on the installation of floating PVs in oceans, the grounding of floating PVs, and tracing-type floating PVs that track sunlight [6,7]. The floating PV system is a new concept of a power plant, which uses buoyant bodies to float solar power plants on the surfaces of dam reservoirs.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Power Generation Prediction Model Considering Environmental Characteristics of Floating Photovoltaic System

et al. 2020

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The main contents of this paper are to verify the environmental factors affecting the power generation of floating photovoltaic systems and to present the power generation prediction model considering environmental factors by using regression analysis and neural networks studied during the last decade. This study focused on a comparative analysis of which model is best suited for the power generation prediction of the floating photovoltaic (PV) system. To compare the power generation characteristics of a floating and a land-based PV system, two identical 2.5 kW PV systems were installed—one on the water surface in the Boryeong Dam, Korea, and the other nearby on dry land—and their performances were compared. The solar irradiance of the floating PV system was 1.1% lower than that of the land-based PV. Nevertheless, the floating PV module temperature was 4.9% lower than that of the land-based PV, generating approximately 3% more power. Using the correlation analysis of data mining techniques, environmental factors affecting the efficiency of the floating PV system were investigated. The correlation coefficient between the module temperature and water temperature was r = 0.6317 which proves that the high efficiency and low module temperature characteristics of the floating PV system, when compared with that of the land-based PV, are due to the water evaporation effect. Considering environmental factors, power-generation prediction models based on regression analysis and neural networks are presented, and their accuracies are compared. This comparison confirms that the accuracy of the power generation prediction model using neural networks was approximately 2.59% higher than that of the regression analysis method. As a result of adjusting the hidden nodes in the neural network algorithm, it was confirmed that a neural network algorithm with ten hidden nodes was most suitable for calculating the amount of power generation.

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Section: Introductionmentioning

confidence: 99%

A Study on the Power Generation Prediction Model Considering Environmental Characteristics of Floating Photovoltaic System

et al. 2020

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“…77,78 The tilt angle is 9 , 69 which ensures more benefits from water cooling because the panels are closer to the water than when the tilt angle is higher, and there is less need for preventing inter-row shadowing. 31 Another benefit of low tilt angles is that the modules will not generate strong wind resistance, which makes the structure less expensive 79 and prevents damages to the plant structure. 40 According to the technical data exposed above, the FSPV system should have at least 165 MW of power capacity to satisfy the load of 212 GWh/year.…”

Section: Modules and Other Equipmentmentioning

confidence: 99%

Save water and energy: A techno‐economic analysis of a floating solar photovoltaic system to power a water integration project in the Brazilian semiarid

Costa

Silva

2021

Intl J of Energy Research

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This paper proposes the use of a floating solar photovoltaic (FSPV) power plant as an alternative renewable energy resource for the San Francisco River Integration Project (SFIP), which aims to deliver water to 12 million people in the Brazilian semiarid. The SFIP requires considerable amounts of energy in a region that has had increasing electricity costs and consumption of water in the past decade. By simulating an FSPV power plant at the System Advisor Model (SAM) using techniques and parameters of real FSPV projects, the results demonstrated the techno-economic feasibility of this technology linked to the SFIP. The economic outcomes are positive net present value (NPV), $2.8 million, and a payback varying from 10.5 to 11.7 years. The levelized cost of electricity (LCOE) of $32.17/MWh is smaller than the current energy rates paid by the SFIP administrator, and the water costs to final consumers could be reduced by 40%. In addition, the FSPV's capacity factor was 21.1%, and the system could minimize water evaporation from one of the SFIP's reservoirs by 16.7%. The system can also create revenues for the San Francisco and Parnaiba Valleys Development Company (CODEVASF) by trading the excess of electricity with the grid. This paper also analyses the FSPV's environmental impacts and its relevance under the water-energy nexus in the Brazilian Northeast. The FSPV could minimize the SFIP's operational costs, avoid environmental impacts, and improve the efficiency of water and energy management. Such components are crucial when analyzing the water-energy nexus in such a region, marked by strong competition for water access and long periods of drought.

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“…It consisted of a four-unit structure with 24.8 kW generation capacity per unit. The internal rectangularly shaped structure hosts an operating device for rotation and various electrical devices, as shown in Figure 9 [13][14][15]. In addition, a two-unit structure was installed as fixed units.…”

Section: Floating Pv Energy Systems In Korea: 2009-2010mentioning

confidence: 99%

Application of Floating Photovoltaic Energy Generation Systems in South Korea

et al. 2016

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Abstract:In order to mitigate air pollution problems caused mainly by the excessive emission of carbon dioxide, in 2012, the South Korean government decided to introduce a renewable portfolio standards (RPS) program that requires electricity providers to gradually increase their production of renewable energy. In order to meet the government's target through this RPS program, electricity providers in Korea have looked to various types of new and renewable energy resources, such as biomass, wind, and solar. Recently, floating photovoltaic (PV) systems have attracted increased interest in Korea as a desirable renewable energy alternative. This paper provides a discussion of recent research into floating PV systems and the installation of floating PV power plants in Korea from 2009 to 2014. To date, thirteen floating PV power plants have been installed in Korea, and several plans are underway by many different organizations, including government-funded companies, to install more floating PV power plants with various generation capacities. These building trends are expected to continue due to the Korean government's RPS program.

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A study on development of rotary structure for tracking-type floating photovoltaic system

Cited by 34 publications

References 5 publications

A Study on the Power Generation Prediction Model Considering Environmental Characteristics of Floating Photovoltaic System

A Study on the Power Generation Prediction Model Considering Environmental Characteristics of Floating Photovoltaic System

Save water and energy: A techno‐economic analysis of a floating solar photovoltaic system to power a water integration project in the Brazilian semiarid

Application of Floating Photovoltaic Energy Generation Systems in South Korea

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