Paper Title:
Frictional Effects in a Low Speed Polar-Axis Solar Tracker
  Abstract

Sensorless solar tracking involves the low speed tracking of the direction of sunrays across the sky. At such low speeds, frictional effects in the electromechanical drive system of the tracker become amplified, and can significantly affect the accuracy of tracking. This paper models the frictional effects in low speed solar tracking and shows that the frictional effects lead to significant positional error during tracking. Further results show that, a class of controllers derived from strictly positive real (SPR) transfer functions, could be used to eliminate the positional tracking error due to frictional effects.

  Info
Periodical
Chapter
Chapter 7: Renewable Energy
Edited by
A.O. Akii Ibhadode
Pages
487-494
DOI
10.4028/www.scientific.net/AMR.367.487
Citation
J. T. Agee, A. A. Jimoh, "Frictional Effects in a Low Speed Polar-Axis Solar Tracker", Advanced Materials Research, Vol. 367, pp. 487-494, 2012
Online since
October 2011
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