A novel open-source master-slave heliostat

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A oral presentation given at the ISES SWC 2013 conference in Cancun Mexico, about our open-source heliostat array, designed and built at CICESE.

A oral presentation given at the ISES SWC 2013 conference in Cancun Mexico, about our open-source heliostat array, designed and built at CICESE.

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  • 1. A novel open-source master-slave heliostat array for use as an experimental platform and solar power applications R. Evans, A. Sanchez Garcia LEARS, CICESE TUESDAY, 5 NOVEMBER 2013 ISES SWC Cancun Mexico DR. R. EVANS 2013
  • 2. the solar challenge • maximize aperture to sun • minimize radiation loss to environment • the sun moves DR. R. EVANS 2013
  • 3. • 30% increase with sun tracking • • more in the summer trackers cost more then 30% of a panel DR. R. EVANS 2013
  • 4. Mexico specific challenge • No local market –starting from nothing • DIY, no loan economy • Low adoption of foreign technologies • parts and price • Mini- µ-business economy: 10-200 kW • Low formal education of end users DR. R. EVANS 2013
  • 5. Open design Open energy Open energy • Use open design • Creative commons • Master-slave design • Built from locally accesible components • Hybrid tracking system (active-absolute) DR. R. EVANS 2013
  • 6. Master slave heliostat array One heliostat to control them all… DR. R. EVANS 2013
  • 7. DR. R. EVANS 2013
  • 8. DR. R. EVANS 2013
  • 9. Bowden Tubes DR. R. EVANS 2013
  • 10. Heliostat system, Amo with cross-hair, optical sensor and photovoltaic cells, Slave with giant fresnel lens DR. R. EVANS 2013
  • 11. DR. R. EVANS 2013
  • 12. target Sun mirror? DR. R. EVANS 2013
  • 13. DR. R. EVANS 2013
  • 14. DR. R. EVANS 2013
  • 15. target mirror? Sun DR. R. EVANS 2013
  • 16. target mirror Sun DR. R. EVANS 2013
  • 17. target mirror? Sun
  • 18. encoder 1 encoder 2 Control system Optical sensor, solid-state relay, change system, micro DR. R. EVANS 2013 controller
  • 19. Optical sensor Voltage divider with photo-resistors DR. R. EVANS 2013
  • 20. Solid state relay low power consumption DR. R. EVANS 2013
  • 21. Sensor response orthononality DR. R. EVANS 2013
  • 22. Nonlinearity fixed unbalanced resistance: adding variable resistor may fix problem. DR. R. EVANS 2013
  • 23. DR. R. EVANS 2013
  • 24. References [1] S.A.Kalogirou, Solar Energy Engineering, processes and systems, 1st Edition, Elsevier Inc.,San Diego, USA, 2009. [2] G. M. noz Melé ndez, E. Díaz-Gonza`lez, H. E. CambellRamírez, M. Q.-N. nez, Baja california: Perfil energé tico 2010-2020, Tech. rep., Comision Estatal de energ`ıa de Baja California, Avenida Pioneros 1060 Col. Centro Civico C.P. 21000, Mexicali, Baja California (2012). [3] C.Commons.Atribució n-licenciamiento recíproco 2.5 (mé xico)[online](072013)[cited30-06-2013]. [4] C.Commons.Attribution-sharealike3.0unitedstates[online] (072013)[cited30-06-2013]. [5] Arduino homepage [online] (072013) [cited30-06-2013]. [6] R.Evans. Github share of heli-stato-amo-esclavo [online] (062013) [cited30-06-2013].
  • 25. Thank you Gracias Merci –Rodger Evans revans@cicese.mx DR. R. EVANS 2013