I am trying to do a simulation for a MPPT circuit with synchronous buck converter and resistor load. I am done with the control part but I didnt quite understand the solar panel modeling. My estimated PV panel should be 600W (60 V 10 A at MPP) maybe this one is a close choice : https://jinkosolarcdn.shwebspace.com/uploads/JKM625-650N-78HL4-BDV-F9-EN.pdf


I dont need detailed adjustments such as temperature or cell by cell control. I just need irradiance control and IV characteristics, so I think I dont need a complex model. Can anyone help me on this if possible? And the Irradiance control doesn't have to be at the same time during the simulation I am okay if its just be changeable for each different simulation.

 

hi k2,
Welcome to AAC.
Are these any help, I have other if required.
E

 

hi k2,
Welcome to AAC.
Are these any help, I have other if required.
E
View attachment 341354

Can you explain it a bit like what are the parameters for ?

 

hi,
Will post back shortly with explanations.
E

 

hi,
Will post back shortly with explanations.
E

Would be awesome if you can explain based on my datasheet

 

hi,
This should help, check out the n parameter, also adjust Isc current to adjust the available 'sunshine'
Do not adjust the other settings

E

@kmesne2 Post your circuit when ready, we can give it a run.

 

hi,
This should help, check out the n parameter, also adjust Isc current to adjust the available 'sunshine'
Do not adjust the other settings

E

@kmesne2 Post your circuit when ready, we can give it a run.

View attachment 341356

Can you share the schematics ? What is the n parameter I could not find it in my data sheet. And how do I adjust Voc Inc and Vmp Imp ?

 

hi,
This is an approx compare of your panel, the n = Vout.
Compare with the d/s graphs and adjust so that it compares.
E

 

hi,
This is an approx compare of your panel, the n = Vout.
Compare with the d/s graphs and adjust so that it compares.
E
View attachment 341362View attachment 341363

What you mean by saying n=Vout? And can we approximate the Isc with W/m^2?

 

Hi km,
This series of simulation data closely matches the 650 panel.
n = number of panels, which sets the Voc and Current available on load.
I have chosen 95 which matches the Vload and Wattage. The d/s states 156.
Isc represents the Sunshine intensity.


E