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Sensors 2013, 13(3), 3157-3168; doi:10.3390/s130303157
Article

Design and Implementation of a Sun Tracker with a Dual-Axis Single Motor for an Optical Sensor-Based Photovoltaic System

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Received: 31 January 2013; in revised form: 3 March 2013 / Accepted: 4 March 2013 / Published: 6 March 2013
(This article belongs to the Section Physical Sensors)
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Abstract: The dual threats of energy depletion and global warming place the development of methods for harnessing renewable energy resources at the center of public interest. Solar energy is one of the most promising renewable energy resources. Sun trackers can substantially improve the electricity production of a photovoltaic (PV) system. This paper proposes a novel design of a dual-axis solar tracking PV system which utilizes the feedback control theory along with a four-quadrant light dependent resistor (LDR) sensor and simple electronic circuits to provide robust system performance. The proposed system uses a unique dual-axis AC motor and a stand-alone PV inverter to accomplish solar tracking. The control implementation is a technical innovation that is a simple and effective design. In addition, a scaled-down laboratory prototype is constructed to verify the feasibility of the scheme. The effectiveness of the Sun tracker is confirmed experimentally. To conclude, the results of this study may serve as valuable references for future solar energy applications.
Keywords: dual-axis Sun tracker; photovoltaic panel; feedback control theory; light dependent resistor; stand-alone PV inverter; energy gain dual-axis Sun tracker; photovoltaic panel; feedback control theory; light dependent resistor; stand-alone PV inverter; energy gain
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Wang, J.-M.; Lu, C.-L. Design and Implementation of a Sun Tracker with a Dual-Axis Single Motor for an Optical Sensor-Based Photovoltaic System. Sensors 2013, 13, 3157-3168.

AMA Style

Wang J-M, Lu C-L. Design and Implementation of a Sun Tracker with a Dual-Axis Single Motor for an Optical Sensor-Based Photovoltaic System. Sensors. 2013; 13(3):3157-3168.

Chicago/Turabian Style

Wang, Jing-Min; Lu, Chia-Liang. 2013. "Design and Implementation of a Sun Tracker with a Dual-Axis Single Motor for an Optical Sensor-Based Photovoltaic System." Sensors 13, no. 3: 3157-3168.


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