Abstract
An experimental method is given to determine the tracking error of a single axis east-west sun tracking system suitable for mounting a linear concentrator or a photovoltaic array. The electromechanical tracking system is sensor controlled on a clear day and is clock driven in absence of the sun. The performance of the tracking system was studied with a composite parabola mounted on it and a tracking error of less than one degree was achieved; this can be improved by giving a southward tilt.
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