EESFB Photovoltaic Solar Energy Unit

5.3.1.- PHOTOVOLTAIC SOLAR ENERGY
PHOTOVOLTAIC SOLAR ENERGY UNIT - EESFB

INNOVATIVE SYSTEMS

The Photovoltaic Solar Energy Unit, "EESFB", includes equipment that uses the photo-conversion law for the direct conversion of solar radiation into electricity. The absorbed energy is provided by simulated solar radiation, which in our case is supplied by a panel with powerful light sources (solar lamps).

See general description

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General Description

The sun provides a wide spectrum of solar power. With the exception of the light we see around us every day, the rest of the solar power is invisible. Other parts of the spectrum consist of cosmic beams, gamma rays, x-rays, ultraviolet light, infrared light, radio waves and heat.

Solar radiation is a form of energy that can be transformed into other types of usable energy: electric, calorific, etc. The systems that carry out this transformation belong to a set of new clean technologies, which do not harm the environment. The direct conversion of light energy into electrical energy is known as photovoltaic effect.

The Photovoltaic Solar Energy Unit, "EESFB", includes equipment that uses the photo-conversion law for the direct conversion of solarradiation into electricity.

The absorbed energy is provided by simulated solar radiation, which in our case is supplied by a panel withpowerful light sources (solar lamps).

The unit contains:

  • Photovoltaic solar panels.
  • Solar simulator composed of solar lamps.
  • Ventilation system.
  • DC load and battery charger regulator.
  • Auxiliary battery charger.
  • Battery.
  • DC loads module.
  • Sensors (temperature, light radiation, DC current and DC voltage).
  • Electronic console.

Exercises and guided practices

GUIDED PRACTICAL EXERCISES INCLUDED IN THE MANUAL

  1. Identification and familiarization with all components of the unit and how they are associated with its operation.
  2. Determination of the solar panel characteristic parameters.
  3. Study of the materials that make up the solar cell.
  4. Study of the p and n sides of a solar cell.
  5. Study of the I-V and P-V curves.
  6. Study of the inverse current or the saturation current.
  7. Study of V, I and W according to different loads.
  8. Measurement of the open-circuit voltage and the short-circuit current for a solar panel with load.
  9. Measurement of the maximum power for a solar panel with load.
  10. Study of the relationship between power generated and solar radiation power.
  11. Study of the solar panel maximum power.
  12. Study of the influence of temperature on the solar panel opencircuit voltage.
  13. Determination of the photo-conversion efficiency.
  14. Study of the efficiency of the solar panels connected in parallel.
  15. Study of the efficiency of the solar panels connected in series.
  16. Study of the efficiency, depending on the temperature, of the photovoltaic system connected in parallel.
  17. Study of the operation of the photovoltaic generation systemsupplying power to different DC loads without an auxiliary battery.
  18. Study of the photovoltaic power generation system operation with an auxiliary battery and supplying different DC/AC loads.
  19. Study of the operation of the photovoltaic system in series/parallel with connection of different loads and without the support of the storage battery.
  20. Study of the operation of the photovoltaic system in series/parallel with connection of different loads DC and with the support of the storage battery.

MORE PRACTICAL EXERCISES TO BE DONE WITH THE UNIT

  1. Lamps illumination profile study.
  2. Determination of the resistance of a solar cell connected in series and in parallel.
  3. Study of the parameters that define the quality of a solar cell.
  4. Study of the dependence of the voltage of open circuit (V∞) on the lumens.

Practices to be done with the OPTIONAL KIT "EE-KIT":

  1. Study of the operation of the photovoltaic system in series/parallel with connection of different loads and without the support of the storage battery.
  2. Study of the operation of the photovoltaic system in series/parallel with connection of different AC loads and with the support of the storage battery.
  3. Study of the connection of loads to an alternating voltage of 220V.

Practices to be done with the additional recommended element "EE-HYB-KIT":

  1. Study of the hybrid inverter’s grid connection procedure: correct sequence of battery and grid switches.
  2. Study of the hybrid inverter configuration.
  3. Study of the hybrid inverter in grid connection mode.
  4. Study of the hybrid inverter in island mode.
  5. Study of the behavior of the hybrid inverter in the event of a blackout.
  6. Study of the charging process of the battery from the laboratory grid through the hybrid inverter.
  7. Study of the battery charging process from a renewable energy source.
  8. Study of the power flows of the battery and the grid under variations of the energy demand with the variable resistive load.
  9. Study of the response of the hybrid inverter when the critical discharge point of the battery is reached.
  10. Study of the energy balance between the battery-charge-grid by means of the analog ammeters and voltmeters incorporated in the kit.

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