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Anonymous Poster

Modeling PV Cells

01/16/2008 9:24 AM

Hello. I have been charged with the task of creating a basic model which can predict power output of a common silicon based photovoltaic cell as it relates to changes in the epi layer (defects, thickness, % coverage, etc). I'm not exactly sure what equations to use or where to even start. Could anyone point me in the right direction? How much harder is it to add in doping to the model?

Thanks

Avery montembeault
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user-deleted-1105
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Popular Science - Weaponology - New Member United Kingdom - Member - New Member

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#1

Re: Modeling PV Cells

01/16/2008 1:32 PM

Suggest you type 'PV cell model' into Google ..it worked for me in about 5 secs
Too many links to direct you to, The first hit had more maths than this cat would like to use....
I'm sure you will find many models of varying complexity...

Del

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alzie
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Join Date: Dec 2005
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#2

Re: Modeling PV Cells

01/17/2008 10:41 AM

In your favorite SPICE (i use LTspice),

modify a rectifier diode (4001 for instance) to greatly increase "Is" to like 1E-4.

Adjust this as necessary to match the output voltage.

Connect a current source in parallel to match the photo current.

Max output power occurs when loading causes the voltage to drop just before constant current mode.

PV cells are nothing magical, just diodes like any other,

Ditto for LEDs.

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 alzie
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user-deleted-1105
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Popular Science - Weaponology - New Member United Kingdom - Member - New Member

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Location: Harlow England
Posts: 16512
Good Answers: 670
#3
In reply to #2

Re: Modeling PV Cells

01/17/2008 1:13 PM

Plastice works fine too

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