Why I have a PV voltage at zero irradiance ? Why I don't have current reading ?

Hello there,

I am trying to simulate the performance of a PV system and I have the site irradiance and assume a constant temperature. However, the voltage readings are not looks right. The voltage rise rate doesn't look right and I even have a voltage at zero irradiance and I have zero current reading as shown in the attachments. When I connected a current source to drain current, results become more unlogic to me.

[MULI]

Can you share the model for more detailed investigation?

[Ameen Bassam]

Here are the simulink model and input

Answer 1

[praguna manvi]

Hi @Ameen Bassam,

The observed initial voltage curve follows the characteristic curve shown below using the "module data parameters" from the shared ".slx" file. This curve is then affected by irradiance.

You can additionally refer to the documentation below for examples using "PV Array":

https://www.mathworks.com/help/sps/examples.html?category=renewable-energy-relib&s_tid=CRUX_topnav