A Study on Solar Tracking Accuracy Improvement Using Image Recognition in Solar Tracking System

2015 ◽  
Author(s):  
Young-Chang kang ◽  
Hee-Joon Lee ◽  
Sun-Hyung Kim
Keyword(s):  
Image Recognition ◽  
Tracking System ◽  
Tracking Accuracy ◽  
Accuracy Improvement ◽  
Solar Tracking

scholarly journals The Impacts of Tracking System Inaccuracy on CPV Module Power

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1278
Author(s):  
Henrik Zsiborács ◽  
Nóra Baranyai ◽  
András Vincze ◽  
Philipp Weihs ◽  
Stefan Schreier ◽  
...  
Keyword(s):  
Tracking System ◽  
Tracking Error ◽  
Weather Conditions ◽  
Cell Diameter ◽  
Tracking Accuracy ◽  
Optimal Position ◽  
Climate Conditions ◽  
Solar Tracking ◽  
Power Yield ◽  
The Difference

The accuracy and reliability of solar tracking greatly impacts the performance of concentrator photovoltaic modules (CPV). Thus, it is of utmost significance to know how deviations in tracking influence CPV module power. In this work, the positioning characteristics of CPV modules compared to the focus points were investigated. The performance of CPV modules mounted on a dual-axis tracking system was analysed as a function of their orientation and inclination. The actual experiment was carried out with CPV cells of 3 mm in diameter. By using a dual tracking system under real weather conditions, the module’s position was gradually modified until the inclination differed by 5° relative to the optimal position of the focus point of the CPV module. The difference in inclination was established by the perfect perpendicularity to the Sun’s rays. The results obtained specifically for CPV technology help determine the level of accuracy that solar tracking photovoltaic systems are required to have to keep the loss in power yield under a certain level. Moreover, this power yield loss also demonstrated that the performance insensitivity thresholds of the CPV modules did not depend on the directions of the alterations in azimuthal alignment. The novelty of the research lies in the fact that earlier, no information had been found regarding the tracking insensitivity point in CPV technologies. A further analysis was carried out to compare the yield of CPV to other, conventional photovoltaic technologies under real Central European climate conditions. It was shown that CPV needs a sun tracking accuracy of at least 0.5° in order to surpass the yield of other PV technologies. Besides providing an insight into the tracking error values of solar tracking sensors, it is believed that the results might facilitate the planning of solar tracking sensor investments as well as the economic calculations related to 3 mm cell diameter CPV system investments.

Dual-Mode Solar Tracking Controller

2011 ◽  
Vol 65 ◽  
pp. 131-135
Author(s):  
Xiao Xin Wang ◽  
Zai Ying Wang ◽  
Bo Wang ◽  
Jun Ting Wang
Keyword(s):  
Solar Energy ◽  
Tracking System ◽  
Programmable Logic Controller ◽  
Programmable Logic ◽  
Tracking Accuracy ◽  
Dual Mode ◽  
Single Issue ◽  
Solar Tracking ◽  
Tracking Controller ◽  
Photoelectric Sensor

For the current solar tracking controller’s poor immunity, poor tracking accuracy and the traditional sensor‘s form single issue, this paper propose a dual-mode solar tracking system which is based on PLC (Programmable Logic Controller). The system combined the fixed trajectory rough tracking with the photoelectric sensor accurate tracking effectively, and improved the controller’s photoelectric sensor tracking mode. By comparing the results of experiments, it shows that the improved tracking controller can achieve tracking accuracy highly. So it can promote the utilization of solar energy.

An Innovative Design of the Automatic Solar Tracking Control Scheme

2013 ◽  
Vol 291-294 ◽  
pp. 109-114
Author(s):  
Jian Yun Bai ◽  
Li Hong Liu ◽  
Xiang Jie Kong
Keyword(s):  
Power Generation ◽  
Light Intensity ◽  
Large Scale ◽  
Tracking System ◽  
The Sun ◽  
Tracking Accuracy ◽  
Photovoltaic Power ◽  
Solar Tracking ◽  
Weather Situation ◽  
Reliable Performance

A double-axis solar tracking system based on horizontal coordinate is adopted. A method of combining the sun trajectory tracking and light intensity sensor is proposed in this tracking system. Detection results of light intensity sensor were used to determine weather situation, control the start -stop of the tracking system. The sun trajectory was calculated by astronomical algorithms to determine the solar orientation. Different interval times were set in different time periods to improve the tracking accuracy. It enhances solar radiation, improves the power generation efficiency of photovoltaic systems and reduces the cost of photovoltaic power generation. This system is simple and easy to achieve. It has lower cost and reliable performance. It can be used in large-scale photovoltaic power plant projects.

Performance Study of Solar Trough Tracking Control System

2014 ◽  
Vol 541-542 ◽  
pp. 1433-1437 ◽  
Author(s):  
Hai Li Li ◽  
Cheng Mu Xu ◽  
Xu Ji ◽  
Ming Li ◽  
Li Jun Tan
Keyword(s):  
Control System ◽  
Thermal Efficiency ◽  
Tracking Control ◽  
Tracking System ◽  
Experimental Results ◽  
One Dimension ◽  
Performance Study ◽  
Tracking Accuracy ◽  
Solar Tracking ◽  
The Relationship

In this paper, the tracking accuracy of one-dimension north-south solar tracking system is analyzed. The method of indirectly measuring one-dimension north-south solar tracking system is given according to the variation of sun position, and the relevant formulas are derived. The experiment on measuring the relationship between tracking accuracy and thermal efficiency of trough system is also conducted. Experimental results show that the system tracking deviation is 0.04 0.065°; the peak of tracking deviation of trough system is 0.875°.

On a New Parallel Tracking System for Accurate Orientation of Concentrated Solar Convertors

2014 ◽  
Vol 658 ◽  
pp. 105-110 ◽  
Author(s):  
Mircea Neagoe ◽  
Ion Visa ◽  
Nadia Cretescu ◽  
Macedon Moldovan
Keyword(s):  
High Performance ◽  
Driving Forces ◽  
Tracking System ◽  
Cost Effective ◽  
Tracking Accuracy ◽  
Concentrated Solar Energy ◽  
Solar Tracking ◽  
Static Approach ◽  
Linear Actuators ◽  
Low Incidence

The concentrated solar energy convertors (e.g. solar-thermal dish, concentrated photovoltaic) require high tracking accuracy to maintain low incidence angles of the solar ray in relation with the concentrator optical axis (e.g. tracking accuracy of 0.05°...0.1°). This functional requirement is currently ensured by the high performance dual-axis solar tracking systems, able to reach the imposed accuracy, including expensive rotary actuator solutions. This paper proposes a new high accuracy tracking system for diurnal orientation, integrating a 2 DOF parallel linkage driven by linear actuators, as a simple, accurate, and cost-effective solution. A kinematic and static approach used for optimisation of the driving programs of the two linear actuators is presented, following the requirements: a) ensure the imposed tracking accuracy and b) achieve advantageous transmitting angles and hence lowest driving forces. The performances of the system are analysed on large orientation strokes (over 130°); the results obtained confirm the viability of the new tracking system concept, with higher performances compared to other similar known solutions.

Application of Dual Axis Solar Tracking System in Qurghonteppa, Tajikistan

2019 ◽  
Author(s):  
Adven Masih ◽  
Murodbek Safaraliev ◽  
Karomatullo Mukhmudov ◽  
Ismoil Odinaev ◽  
Bukhtiyor Ghoziev ◽  
...  
Keyword(s):  
Tracking System ◽  
Solar Tracking

scholarly journals Optimal design of the solar tracking system of parabolic trough concentrating collectors

2020 ◽  
Vol 15 (4) ◽  
pp. 613-619
Author(s):  
Li Kong ◽  
Yunpeng Zhang ◽  
Zhijian Lin ◽  
Zhongzhu Qiu ◽  
Chunying Li ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Solar Radiation ◽  
Tracking System ◽  
Low Cost ◽  
Parabolic Trough ◽  
The North ◽  
Tracking Mode ◽  
Solar Tracking ◽  
East West

Abstract The present work aimed to select the optimum solar tracking mode for parabolic trough concentrating collectors using numerical simulation. The current work involved: (1) the calculation of daily solar radiation on the Earth’s surface, (2) the comparison of annual direct solar radiation received under different tracking modes and (3) the determination of optimum tilt angle for the north-south tilt tracking mode. It was found that the order of solar radiation received in Shanghai under the available tracking modes was: dual-axis tracking > north-south Earth’s axis tracking > north-south tilt tracking (β = 15°) > north-south tilt tracking (β = 45) > north-south horizontal tracking > east-west horizontal tracking. Single-axis solar tracking modes feature simple structures and low cost. This study also found that the solar radiation received under the north-south tilt tracking mode was higher than that of the north-south Earth’s axis tracking mode in 7 out of 12 months. Therefore, the north-south tilt tracking mode was studied separately to determine the corresponding optimum tilt angles in Haikou, Lhasa, Shanghai, Beijing and Hohhot, respectively, which were shown as follows: 18.81°, 27.29°, 28.67°, 36.21° and 37.97°.

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