General Formula for On-Axis Sun-Tracking System

Chong, Kok‐Keong; Wong, Chee‐Woon

doi:10.5772/10341

Cited by 18 publications

(12 citation statements)

References 25 publications

(13 reference statements)

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“…Therefore, the philosophy for the tracking is an open loop to use open loop sensors or algorithms, thereby, the sensors are not affected by clouds or seasonal changes. An open loop sensor such as an encoder ensures that the equivalent dish is set directly in the direction of the calculated Sun trajectory, obtained from a special table or algorithm (Chong et al 2014).…”

Section: Design Of Dual Axis Sun Tracking Systemmentioning

confidence: 99%

Modeling and Design of Azimuth-Altitude Dual Axis Solar Tracker for Maximum Solar Energy Generation

Shufat

Kurt

Hançerlioğulları

2019

Int. J. Renew. Energy Dev.

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The sun tracking system that lets Parabolic Dish or PV panel orthogonal to the sun radiation during the day, can raise the concentrated sun radiation by up to 40%. The fixed Parabolic Dish cannot generally track the sun trajectory, also the single-axis tracking system can follow the sun in the horizontal direction (azimuth angle), while the two-axis tracker tracks the sun path in both azimuth and altitude angles. Dual axis automated control tracking system, which tracks the sun in two planes (azimuth and altitude) to move a Concentrated Parabolic Dish system to the direction of ray diffusion of sun radiation is studied and designed. The designed tracking system constructed of microcontroller or programmable logic control (PLC) with a digital program that operates sun tracker using driver, gear box to control the angular speed and mechanical torque, supports and mountings. Two steeper motors are modelled to guide the parabolic dish panel perpendicular to the sun's beam. In the present study, simulation scheme of two axis sun tracking system has been developed by operating under Matlab/Simulink. The program models and studies the effectiveness of overall system. The designed tracker has been studied with real data of sun trajectory angles (azimuth and altitude) as well as a Direct Normal Irradiation (DNI) to improve the effectiveness of parabolic dish panel by adding the tracking features to those systems according to the present site.©2019. CBIORE-IJRED. All rights reservedArticle History: Received May 18th 2018; Received in revised form October 8th 2018; Accepted January 6th 2019; Available onlineHow to Cite This Article: Shufat, S.A., Kurt, E, and Hancerlioğulları, A. (2019) Modeling and Design of Azimuth-Altitude Dual Axis Solar Tracker for Maximum Solar Energy Generation. Int. Journal of Renewable Energy Development, 8(1), 7-13.https://doi.org/10.14710/ijred.8.1.7-13

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Section: Design Of Dual Axis Sun Tracking Systemmentioning

confidence: 99%

Modeling and Design of Azimuth-Altitude Dual Axis Solar Tracker for Maximum Solar Energy Generation

Shufat

Kurt

Hançerlioğulları

2019

Int. J. Renew. Energy Dev.

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“…In order to track the sun trajectory accurately, we use the following Equation (1) as the sun tracking method in our experiment. In this equation, the altitude and azimuth trajectory formula use the hour angle (H) and declination (δ) in the sun-tracking formula by Chong and Wong [24]. The horizontal coordinate is very convenient to define the sun position for prerequisite initial position of the solar tracker.…”

Section: Experimental Methods and Apparatusmentioning

confidence: 99%

Biaxial-Type Concentrated Solar Tracking System with a Fresnel Lens for Solar-Thermal Applications

2016

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Abstract:In this paper, an electromechanical, biaxial-type concentrated solar tracking system was designed for solar-thermal applications. In our tracking system, the sunlight was concentrated by the microstructure of Fresnel lens to the heating head of the Stirling engine and two solar cells were installed to provide the power for tracking system operation. In order to obtain the maximum sun power, the tracking system traces the sun with the altitude-azimuth biaxial tracing method and accurately maintains the sun's radiation perpendicular to the plane of the heating head. The results indicated that the position of heating head is an important factor for power collection. If the sunlight can be concentrated to completely cover the heating head with small heat loss, we can obtain the maximum temperature of the heating head of the Stirling engine. Therefore, the temperature of heating head can be higher than 1000˝C in our experiment on a sunny day. Moreover, the results also revealed that the temperature decrease of the heating head is less than the power decrease of solar irradiation because of the latent heat of copper and the small heat loss from the heating head.

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“…The ordinary types of single-axis sun tracking systems are the horizontal single-axis tracker (HSAT), vertical single-axis tracker (VSAT), tilted single-axis tracker (TSAT) etc. [4]. Al-Mohamad integrated the programmable logic controlling (PLC) unit into a single-axis sun tracking system to achieve an average overall performance improvement of more than 20% throughout the day in respect to that of fixedmounted PV modules [5].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Methodology to Evaluate Parasitic Energy Consumption for Different Types of Dual-Axis Sun Tracking Systems

Tan

Wang

Wong

et al. 2021

International Journal of Photoenergy

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A dual-axis sun tracking system is an essential strategy to maximize the optical efficiency of harnessing solar energy. However, there is no significant study yet to optimize the net performance of the photovoltaic (PV) or concentrator photovoltaic (CPV) system equipped with a dual-axis sun tracking system. Parasitic energy loss associated with the power consumption of the sun tracking system is one of the major concerns for the solar industrial players. To address this issue, a comprehensive methodology has been developed to evaluate the yearly cumulative range of motion for dual-axis sun tracking systems in the cases of with and without fixed parking positions across the latitudes ranging from 45°N to 45°S. The parasitic energy consumptions have been investigated for three selected types of dual-axis sun tracking systems, i.e., the azimuth-elevation sun tracking system (AE-STS), polar dual-axis sun tracking system (PD-STS), and horizontal dual-axis sun tracking system (HD-STS). The simulated results indicate that the dual-axis sun tracking system with the nonfixed parking (or stow) position has lower yearly cumulative parasitic energy consumption with respect to the sun tracking system with a fixed parking position. Lastly, our simulation result has shown that the parasitic energy consumption of the sun tracking is relatively smaller to that of the electrical energy generated by the concentrator photovoltaic system with the ratio between 0.15% and 0.29% for AE-STS, between 0.15% and 0.30% for PD-STS, and between 0.17% and 0.35% for HD-STS.

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General Formula for On-Axis Sun-Tracking System

Cited by 18 publications

References 25 publications

Modeling and Design of Azimuth-Altitude Dual Axis Solar Tracker for Maximum Solar Energy Generation

Modeling and Design of Azimuth-Altitude Dual Axis Solar Tracker for Maximum Solar Energy Generation

Biaxial-Type Concentrated Solar Tracking System with a Fresnel Lens for Solar-Thermal Applications

Comprehensive Methodology to Evaluate Parasitic Energy Consumption for Different Types of Dual-Axis Sun Tracking Systems

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