Alios Web Project

The user can configure remotely the test system as follows:
- Choose between three different connection configurations of the four solar panels (20watt each)
- Partly shade the cell of one panel
- Adjust the tilt angle of the panels base
The system then performs automatically a test sequence in order to generate the current-voltage (I-V) characteristic curve of the photovoltaic panels array by applying a variable electronic load to the panels output.
This experiment provides a basis for understanding the electrical behaviour of a PV panel array under different solar irradiance and ambient temperature as well as the effect of having one panel underperforming due to having one of its cell shaded or soiled by droppings etc.

Please Note: The test is run only if it is Day-Time (1 hour after sunrise and 1 hour before sunset) at the test site , and the intensity of the solar irradiance at the chosen angle exceeds 500W/m2.

  1. Check the "Current Status" field to see if it is Day-Time or Night-Time. If the Current Status is busy running a test sequence then unless you submitted this test, you will have to wait about 2 minutes before the system becomes available for a new test.
  2. If the system is not busy, and it is DayTime, insert the desired angle and submit your request.
  3. The system automatically will adjust the slope of the pv panel to the desired angle and you see this change in the next photo. Also, the experimental characteristic curve is shown in the graph and an external file containing the output data is generated.
Enter the Alios project configuration menu

For more information and experimental exercises about our Remote Lab, please read the following publications:

Axaopoulos P., Fylladitakis E.D., Theodoridis M., Moutsopoulos K. (2017). “E-learning Applications for Remotely Accessible Photovoltaic Array Educational Laboratories”; IEEE Global Engineering Conference (EDUCON), Athens, 25-28 April, pag. 735-740.

Axaopoulos P., E. Fylladitakis (2014) “Photovoltaic engineering e-learning applications developed for remote laboratory experimentation systems” International Journal of Energy and Environmental Engineering, 5:78.

Axaopoulos P., K. Moutsopoulos, M. Theodoridis (2012). "Engineering education using remote laboratory through the Internet". European Journal of Engineering Education, Vol. 37, Issue 1, pp. 39-48.