Hi!
In my bachelor thesis I need to simulate a PV-Cell. I've chosen to use LT-Spice since the rest of the project is simulated through that.

So I have googled a bit and found a diode and added it to the "standard.dio" file in LT-Spice. I've also built a circuit to find out the I-V characteristics. However I get a much larger Voc than I want, I get about 31V and I want about 6V..

The model I use is the following:
.model PV_Panel D(Is=10n Rs=.5 N=77.06 Cjo=10n M=.5 Eg=85 Xti=230 BV=30 IBV=.001 Vj=.4 Iave=1 Vpk=30 mfg=Generic type=PV)

I've tried to play around with the parameters but as soon as i change them i get a Isc = 0.

So to clarify I want to alter the Voc!

This is what it looks like so far, I'm really hoping for some help!

 

hi Joakim,
Welcome to AAC.
Unzip this PV file, it may help you.
E

 

Thank you ericgibbs!
You yust saved my weekend!

 

hi,
You are welcome.
Your project sounds interesting, any details.?
E

 

Yes,
I'm trying to create a battery charger with PV-cells. Thats not a new thing I know, but what I'm trying to achive is a small adapter that is the size of a AA battery. The idea is that you should be able to charge the battery in a window or whatever not going through the hastle of using a charger.

/Joakim

 

hi J,
Try this asc file, hope you have the models.
E