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Vol. 131, Issue 8, August 2011, pp.75-82

 

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Design, Development and Testing of a PC Based One Axis Sun Tracking System for Maximum Efficiency

 

Sonu AGARWAL, Sagarika PAL

Department of Electrical Engineering, National Institute of Technical Teachers’ Training
and Research, Kolkata [Under MHRD, Govt. of India],

Block-FC, Sector-III, Salt Lake City, Kolkata-700106, India

E-mail: sonu1.agarwal@gmail.com, spal922@yahoo.co.in

 

Received: 2 May 2011   /Accepted: 22 August 2011   /Published: 30 August 2011

 

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Abstract: The solar energy is a clean source of energy and the photo-voltaic (PV) solar panel converts the solar radiation into voltage. The PV solar panel produces the maximum power when the incident angle of sunlight is 90°. In the present paper a PC based one axis sun tracking system has been described to keep the PV solar panel perpendicular to the incident sunlight and thus to have maximum solar power utilization. A computer controlled stepper motor has been used in the tracking system to provide motion to the photovoltaic panel. LDR has been used as photo sensor to sense the incident solar radiation. The implementation of the system has been realized by designing optical to electrical signal conversion circuit, analog to digital conversion circuit, motor driving circuit and parallel port interfacing with PC. Experimental results are also included in order to validate the system performance.

 

Keywords: Sun tracking system, LDR, Stepper motor, Maximum solar power utilization, Parallel port interfacing

 

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