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Power feedback strategy based on efficiency trajectory analysis for HCPV sun tracking

Author

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  • Satué, Manuel G.
  • Castaño, Fernando
  • Ortega, Manuel G.
  • Rubio, Francisco R.

Abstract

This paper presents a control strategy for sun trackers which adapts continuously to different sources of error, avoiding the necessity of any kind of calibration by analyzing the produced electric power to sense the position of the Sun. The proposed strategy is able to meet the strict specifications for HCPV sun trackers despite of mechanical uncertainties (misalignments in the structure itself, misalignment of the solar modules with respect to the wing, etc.) and installation uncertainties (misalignments of the platform with respect to geographical north). Experimental results with an industrial-grade solar tracker showing the validity of the proposed control strategy under sunny and moderate cloudy conditions, as well as with different installation precisions by un-calibrating the system on purpose are exposed.

Suggested Citation

  • Satué, Manuel G. & Castaño, Fernando & Ortega, Manuel G. & Rubio, Francisco R., 2020. "Power feedback strategy based on efficiency trajectory analysis for HCPV sun tracking," Renewable Energy, Elsevier, vol. 161(C), pages 65-76.
    • Handle: RePEc:eee:renene:v:161:y:2020:i:c:p:65-76
    DOI: 10.1016/j.renene.2020.06.031
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    References listed on IDEAS

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