raulrpearson / pvsystems Goto Github PK

Include a link to http://www.euclides.dia.uned.es/aurquia/Files/TFM_Raul_Rodriguez_Pearson.pdf in README. Can help some users out.

Hi everyone,
I am currently using the basic layout of example PVInverter1Phase along with mppt tracker .
How can I achieve AC output at 230 V instead of the same amplitude on DC side?

Thank you in advance.

See https://github.com/raulrpearson/PVSystems/blob/master/PVSystems/package.mo#L6

I have run a PVarray verification simulation [PVSystems/Examples/Verification/PVArrayVerification]. However, I have not been able to produce a Power (W) vs Voltage (V) plot. How to do it?
Thank you

Consider example model PVArrayVerification.
When run, the current goes to zero near the end of the simulation. This means that the model does not simulate negative currents when voltage overcomes OCV.
However, if I change temperature Tn, for instance from 298.15 to 298.15+10, the current the cell delivers goes negative: this is because the internal if: is:
if v < 0 then i = v/((Rs + Rp)/Np); elseif v > Vocn then i = 0; else i = -Np*(Ipv - Id - Ir); end if;
i.e., it switches to i=0 when V>Vocn, with, for temperatures different from the nominal, is different from the actual open-circuit voltage.

If you do so you could save the whole Icons package.

Some of the Image linkes use relative links. You should better use modelica://

See for example:
https://github.com/raulrpearson/PVSystems/blob/master/PVSystems/package.mo#L19
Which should become:

  <p><img src=\"modelica://PVSystems/Resources/Images/TypicalSystem.png\"

I guess that is a mistake right?

Consider Electrical,PVArray model.
In the active region it is:
i = -Np*(Ipv - Id - Ir);
I think that Ipv and Id are cell currents, and therefore for computing the array current they must be multiplied by Np. the definition of Ir, instead is:
Ir = (v - Rs*i)/Rp;
therefore it is already the "array" current flowing through Rp. Therefore I think the formula for i should be changed into:
i = -Np*(Ipv - Id) + Ir;