photovoltaic Characterization with Solartoolkit,Hardware indepentent at http://zone.ni.com/devzone/cda/tut/p/id/7230

[Alex Odyek]

Dear Friends.

I am an Msc student of physics trying to analyse my data on Photovoltaics.I have limited knowledge on Labview and Labview is not part of the course,but I have to use it.

I downloaded the above toolkit,and modified it slightly to read my I-V data from a text file. However, on running it,I get a wrong open circuit voltage as well as wrong short circuit current.

Does any body have an Idea of how this can be done so as to get the correct results.

I am attaching here the modified VI and a sample of the data.

I will grately value your assistance.

Regards,

[Eric_LV · Accepted solution]

Hey Alex,

I would suggest first to try out the VIs in the Devzone article without altering them, try manually inputting your values and seeing if they come out correct.  That way you can tell if it is your programming or the VIs that you downloaded that are causing the problem.  

[Alex Odyek]

Dear Eric L,

Firstly,I must thank you for your concern.

However,the problem has turned out to be a different one,that I have now discovered.

The data I have was manually got using a voltmeter and ammeter.

The toolkit requires that Current must be in descending order of magnitude and voltage in Ascending order of magnitude, and mine was the reverse.

I am now able to get my results accurately.

Thank You

Alex