Calculation of the hourly and daily radiation incident on three step tracking planes

Ai, Bin; Shen, Hui; Ban, Qing; Ji, Binghou; Liao, Xin

doi:10.1016/s0196-8904(02)00229-7

Cited by 32 publications

(15 citation statements)

References 6 publications

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“…A solar tracking is to orients photovoltaic panels to minimize the angle of incidence between the incoming sunlight and a photovoltaic panel [1]. The angle about the vertical axis is called the azimuth angle and is 0 at due North and becomes positive as you start to point East.…”

Section: Fig 1 Elevation and Azimuth Anglementioning

confidence: 99%

Low Cost and Robust Solar Tracking System Based On Data of Daily and Seasonal Variation in Sun Position Regard to Specific Location on Earth

Patel¹,

Patel²

2014

IJIRSET

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Due to the rising need for the resources of energy especially in the developing countries, solar energy is gaining importance. This paper presents the extremely low cost and robust dual axis tracking system that positions solar panel to receive maximum solar energy. Rotation around one axis is automatic and done daily to track the sun while second axis is used for manual adjustment against seasonal variation in the sun path. Database for position of the sun at any point of time from any location on earth is available online. The unique feature of the system is it uses optimized database of yearly sun position for particular location on earth to track the sun, which enables the system to work even in the cloudy weather. Light detector sensors are not used otherwise requires cleaning of the sensors as well as malfunction in cloudy weather which is eliminated. Low cost close loop control system is used to position the solar panels.

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Section: Fig 1 Elevation and Azimuth Anglementioning

confidence: 99%

Low Cost and Robust Solar Tracking System Based On Data of Daily and Seasonal Variation in Sun Position Regard to Specific Location on Earth

Patel¹,

Patel²

2014

IJIRSET

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“…The incorporation of low-cost control methods simplifies the tracking systems. Possible methods include those presented in [16,17] and strategies for tracking systems by defining three points spaced according to the sun's trajectory, either daily or annually [18][19][20][21], or hourly tracking [22]; however, these systems do not guarantee that an adequately high range of efficiency will be maintained. Therefore, the present work proposes a new methodology for the development of a solar tracking system that exploits the advantage offered by knowing the degree of latitude of the installation site to allow the incorporation of low-accuracy, low-cost control mechanisms that keep the PV modules in adequate ranges of efficiency as a function of orientation (EFO).…”

Section: Introductionmentioning

confidence: 99%

PV Tracking Design Methodology Based on an Orientation Efficiency Chart

Ruelas¹,

Muñoz²,

Lucero³

et al. 2019

Applied Sciences

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This work describes a new photovoltaic (PV) sun tracker design methodology that utilizes the advantages that the orientation and efficiency of the PV panel offer due to the latitude of the installation zone. Furthermore, the proposed design methodology is validated experimentally via the implementation of a solar tracker with dual axes at a specific location (27.5° latitude). In this case, the methodology enables the incorporation of a high-availability, low-accuracy, and low-cost tracking mechanism. Based on the results, the feasibility of this type of solar tracker for latitudes close to 30° is demonstrated, as this tracking system costs 27% less than the traditional commercial systems that use slew drives. This system increases the collection efficiency by 24% with respect to a fixed device. The proposed methodology, which is based on an orientation efficiency chart, can be applied to the construction or control of other types of solar tracker systems.

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“…From the literature, various tracking methods have been proposed and validated around the world in previous works and each of them has its pros and cons in terms of efficiency, complexity, and cost. Figure 1 shows the minimum, maximum, and average efficiency of some solar tracking works being reported experimentally and by simulation in other countries [6][7][8][9][10][11][12][13][14][15][16][17][18]. Apparently, the difference in solar tracking efficiency that varies greatly among the countries reported due to different geographic location, local landscape, and climate [19].…”

Section: Introductionmentioning

confidence: 99%

Performance of Dual-Axis Solar Tracker versus Static Solar System by Segmented Clearness Index in Malaysia

Lee

Rahim

Al‐Turki

2013

International Journal of Photoenergy

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The performance of Dual-Axis Solar Tracker (DAST) and Static Solar System (SSS) with respect to clearness index in Malaysia is presented. An attempt to investigate the correlation between clearness index with energy gain and efficiency of DAST over SSS is being done experimentally. A good correlation could not be found out from the daily clearness index. It is due to the more profound advantage of DAST in the morning and evening compared to midday as it is able to follow the sun’s position. Hence, the daily clearness index is divided into three segments which are morning, midday, and evening to interpret the energy gain and efficiency better. A clearer correlation with low standard deviation can be observed on the segmented clearness index analysis. The energy gain and efficiency of seven cities in Malaysia is being estimated with the segmented clearness index and compared to the result generated from anisotropic radiation model. A similar trend is obtained and it has shown that the segmented clearness index could be utilized as a graphical method for estimation of energy gain and efficiency of DAST over SSS.

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Calculation of the hourly and daily radiation incident on three step tracking planes

Cited by 32 publications

References 6 publications

Low Cost and Robust Solar Tracking System Based On Data of Daily and Seasonal Variation in Sun Position Regard to Specific Location on Earth

Low Cost and Robust Solar Tracking System Based On Data of Daily and Seasonal Variation in Sun Position Regard to Specific Location on Earth

PV Tracking Design Methodology Based on an Orientation Efficiency Chart

Performance of Dual-Axis Solar Tracker versus Static Solar System by Segmented Clearness Index in Malaysia

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