question about IEA 15MW simulation using Simulink: 'S-Function' FASTSFunc 'reports an error

[yangyangyang98]

Dear Jonkman@jjonkman
When I was running the IEA 15MW simulation using Simulink, I encountered the following issue: 'S-Function' FASTSFunc 'reports an error:
FAST_InitializeAll:ED_Init:ED_ReadInput:ReadPrimaryFile:OpenFInpFile:Cannot open file ".\IEA-15-240-RWT-UMaineSemi_ElastoDyn.dat"。 But I am certain that the ElastoDyn module is located in the current folder.

I am using IEA-15-240-RWT-1.1.8 version, and openfast-x64.exe and FASTSFunc.mexw64 are v3.5.1 versions. When I run it with cmd, it can run normally, but the above problem occurs in Simulink. I suspect it is a problem with FASTS_SFunc.mexw64, but I am not sure yet

[jjonkman]

Dear @yangyangyang98,

Can you clarify how you are running OpenFAST within Simulink (e.g. using OpenLoop.mdl and Run_OpenLoop.m) and where the files (.mdl, .m, .mexw64, and .dll) are relative to your OpenFAST input files (.fst and .dat)?

Best regards

[yangyangyang98]

Dear @jjonkman
Thank you for your prompt response. My issue has been resolved, and the reason for the error was that the file name in the folder was too long.

Besides，I have a new question. I would like to inquire about the platform-pitch natural frequency of the IEA 22MW semi-submersible floating wind turbine, as well as the natural frequency and damping ratio used by the pitch controller，as I could not find them in “Definition of the IEA Wind 22-Megawatt Offshore Reference Wind Turbine”. Thanks.

[jjonkman]

Dear @yangyangyang98,

I was not the one who developed the IEA Wind 22-MW RWT or its semi-submersible. I would suggest asking questions about the design in the IEA Wind 22-MW RWT repository: https://github.com/IEAWindTask37/IEA-22-280-RWT/issues.

Best regards,