A novel backtracking approach for two-axis solar PV tracking plants

Fernández-Ahumada, Luis Manuel; Ramírez-Faz, J.; Luque, Rafael; Varo-Martínez, Marta; Moreno-Garcia, Isabel M.; Torre, F. Casares de la

doi:10.1016/j.renene.2019.06.062

Cited by 27 publications

(16 citation statements)

References 24 publications

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“…The models used for astronomical tracking have traditionally been based on spherical trigonometry [ 31 ]. However, recently, a new paradigm using vector algebra to define the solar movement and that of the trackers can be found in the literature [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. For this, these models use the solar vector

, which is a unit vector that is directed to the centre of the solar disk.…”

Section: Introductionmentioning

confidence: 99%

“…In this line of work, a novel solar tracking strategy with back-tracking has been proposed to optimise the capture of solar irradiance at all times while avoiding inter-shading between collectors in PV plants with dual-axis tracking [ 39 , 40 , 41 ]. In this study, based on empirical models for the characterisation of the hemispheric distribution of irradiance, the authors quantify the increases in solar incidence on collectors at a higher value than 2%.…”

Section: Introductionmentioning

confidence: 99%

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New Omnidirectional Sensor Based on Open-Source Software and Hardware for Tracking and Backtracking of Dual-Axis Solar Trackers in Photovoltaic Plants

Gómez-Uceda

Ramírez-Faz

Varo-Martínez

et al. 2021

Sensors

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In this work, an omnidirectional sensor that enables identification of the direction of the celestial sphere with maximum solar irradiance is presented. The sensor, based on instantaneous measurements, functions as a position server for dual-axis solar trackers in photovoltaic plants. The proposed device has been developed with free software and hardware, which makes it a pioneering solution because it is open and accessible as well as capable of being improved by the scientific community, thereby contributing to the rapid advancement of technology. In addition, the device includes an algorithm developed ex professo that makes it possible to predetermine the regions of the celestial sphere for which, according to the geometric characteristics of the PV plant, there would be shading between the panels. In this way, solar trackers do not have to locate the Sun’s position at all times according to astronomical models, while taking into account factors such as shadows or cloudiness that also affect levels of incident irradiance on solar collectors. Therefore, with this device, it is possible to provide photovoltaic plants with dual-axis solar tracking with a low-cost device that helps to optimise the trajectory of the trackers and, consequently, their radiative capture and energy production.

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, which is a unit vector that is directed to the centre of the solar disk.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Omnidirectional Sensor Based on Open-Source Software and Hardware for Tracking and Backtracking of Dual-Axis Solar Trackers in Photovoltaic Plants

Gómez-Uceda

Ramírez-Faz

Varo-Martínez

et al. 2021

Sensors

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“…Comunmente, el sistema de seguimiento modifica la posición (de los ejes x,y) de los paneles del arreglo FV [16], a fin de obtener la mayor radiación solar incidente en su superficie. Sin embargo, este esquema incorpora un conjunto de motores y elementos móviles al arreglo que aumentan su complejidad y fallas probables del sistema.…”

Section: Introductionunclassified

Arreglo Inteligente de Concentración Solar FV para MPPT usando Tecnología FPGA

Sandoval-Ruiz¹

2020

Rev. Téc. Ing. Univ. Zulia.

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“…There is also the resulting reduction in hot spots on the trackers, which increases their life span and reduces breakdowns. Backtracking also improves the ground cover ratio (GCR) of the installations, which has the effect of reducing the economic impact with regard to the soil required when building plants [27].…”

Section: Introductionmentioning

confidence: 99%

“…From this perspective, work based on tracking has been undertaken with the aim of optimising production throughout the movement of a panel path, including the backtracking periods [27]. To achieve this, the search is underway for a panel path that maintains the optimum production under the premise that the panel is isolated and therefore does not receive shade from any adjacent panel.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Terrain Orientation on the Design of PV Facilities with Single-Axis Trackers

et al. 2020

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This paper investigates how to optimally orient the photovoltaic solar trackers of an axis parallel to the terrain, applying the sky model of Hay–Davies. This problem has been widely studied. However, the number of studies that consider the orientation (inclination and azimuth of the terrain) is very limited. This paper provides an examination of incident solar irradiance that can be extended to terrain with variable orientation and in consideration of different azimuths of the axis of rotation. Furthermore, a case study of the south of Spain is provided, considering different inclination and orientation terrain values. The results obtained in this study indicate, as a novelty, that for lands that are not south facing, the rotation axis azimuth of solar trackers should be different from zero and adjusted to the same direction as the land azimuth in order to maximize energy production. Annual energy production is sensitive to changes in the rotation axis azimuths of solar trackers (an influence of around 3% of annual energy production).

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A novel backtracking approach for two-axis solar PV tracking plants

Cited by 27 publications

References 24 publications

New Omnidirectional Sensor Based on Open-Source Software and Hardware for Tracking and Backtracking of Dual-Axis Solar Trackers in Photovoltaic Plants

New Omnidirectional Sensor Based on Open-Source Software and Hardware for Tracking and Backtracking of Dual-Axis Solar Trackers in Photovoltaic Plants

Arreglo Inteligente de Concentración Solar FV para MPPT usando Tecnología FPGA

Analysis of the Influence of Terrain Orientation on the Design of PV Facilities with Single-Axis Trackers

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