irradproc error

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taranraj
Topic Author

26 Dec 2014 20:29 #2872 by taranraj

irradproc error was created by taranraj

Hi,

I can't seem to run the irradproc module in the SDKtool. I've added all the data points 9in the data container) needed to run the module but I keep getting the error below:

Error: check fail: reason unassigned referenced, with 'irrad_mode!' for: beam time -1.000000
EXEC_FAIL: irradproc

I'm using the USA NY Albany (TMY2).csv available through SAM. I'm trying to calculate the POA Irradiance for a backtracking system using the Perez model and it won't work no matter what I've tried to do. Any help?

Thanks
Taran

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Paul Gilman

29 Dec 2014 17:18 #2873 by Paul Gilman

Replied by Paul Gilman on topic irradproc error

Dear Taran,

Are you adding variables to the SDKtool data container by hand? It would be easier to troubleshoot if you use the script editor to write an LK script to set the values of the variables. Then you could send me the script for testing.

Also, the irradproc module has more than 6 "required" input variables.

Is there a reason not to use SAM to calculate the POA values? If you use SAM, you don't have to worry about setting values for all of those input variables. The solar performance models report POA values in the hourly results.

Best regards,
Paul.

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