Common Problems
This is a list of common errors and problems that users see when using the SolarFarmer web API, and solutions.
It is early days for the life of the web API so check back often to see if additional problems and solutions have been posted.
Check existing solutions first
You may not be alone in having the issue you have. Someone else may have seen the same issue and there may already be a solution. So check these areas first before submitting a support query:
- Check this page first for any existing solutions.
- Search this website for keywords in any errors you are seeing, you may find help here first.
- Check the public forum https://forum.solarfarmer.dnv.com/ to see if anyone else has had similar problems and there has been a solution provided.
Get in touch
If you cannot find a solution and are stuck, please get in touch:
Post a question on the public forum https://forum.solarfarmer.dnv.com/. A member of the SolarFarmer team, or a member of the public may be able to help you.
Note this forum is public so can be seen by everybody, so don't post any sensitive information you're not happy with everyone being able to see. Though we encourage you to share issues and solutions on the forum as much as you can to help the growing SolarFarmer community.
Email solarfarmer@dnv.com with a thorough description of the problem and ideally ways of easily reproducing it.
- Internal DNV employees can use the SolarFarmer Users Teams channel too.
Common Errors
Error: "Number of strings is not a multiple of the rack height"
This occurs in 2D calculations when:
For fixed-tilt rack plants one of the following properties in a
Layout
object does not divide exactly by theNumberOfModulesHigh
value of theMountingTypeSpecification
that is used for theLayout
:TotalNumberOfStrings
NumberOfStringsInIsolatedRow
NumberOfStringsInFrontRow
NumberOfStringsInBackRow
For tracker plants one of the following properties in a
Layout
object does not divide exactly by theNumberOfModulesHigh
value of theMountingTypeSpecification
that is used for theLayout
:TotalNumberOfStrings
NumberOfStringsInIsolatedRow
NumberOfStringsInLeftRow
NumberOfStringsInRightRow
E.g. if NumberOfModulesHigh
is set to 3 (indicating there are 3 rows of modules along the length of a rack) and you set
NumberOfStringsInFrontRow
to be 8, that doesn't divide exactly by 3 (it implies there will be 2 racks containing 3 strings and
1 rack only containing 2 strings - i.e. not fully laden with strings).
Solution - make sure all the properties above are exactly divisible by the NumberOfModulesHigh
value used in the
MountingTypeSpecification
that is used for the Layout
.