Hello everybody
I would like to simulate a wind turbine with a tuned mass damper in the nacelle using OpenFAST and have a question about the switch options for „StC_DOF_Mode".
As I understand it from the discription, there are 6 options for „StC_DOF_Mode":
0: No StC (passive TMD)
1: Up to three direction indipendent StCs (one for each direction)
2: omnidirectiopnal StC (in XY plane)
3: TLCD
4: Prescribed force/moment time series
5: Force determined by external DLL
Possibilities 0-3 are pretty clear to me, but I am a bit confuesed about the options 4 and 5.
Are they implemented in OpenFAST 3.1.0?
What exactly is meant by options 4 and 5?
Can only passive and semi-active TMDs be simulated or is it also possible to simulate an active TMD?
Thanks for your help and best regards.
Malte