Dear community,
I am simulating the 5 MW onshore wind turbine and as far as I understand, the pitch control will be activated when the rotorspeed exceeds the rated rotor speed of 12.1 rpm. Is there a way that i can set the threshold higher at which the pitch control will be activated. Do i have to recompile a DISCON.dll file for this purpose?
Thank you in advance!
Best regards
Zong
Dear @Zong.Linyang,
The way the baseline controller for the NREL 5-MW turbine works is that the pitch controller is always active, but the pitch angle and integrated speed error are saturated at the minimum pitch angle (the pitch angle at peak power coefficient).
Regardless, presumably you are referring to increasing the rated rotor speed of the wind turbine (beyond 12.1 rpm). The controller constants in the baseline controller (DISCON.dll) for the NREL 5-MW turbine are hard coded within the DLL, so, if you want to change the constants, you’ll need to recompile the DLL. Alternatively, you could switch from the baseline controller to ROSCO (GitHub - NREL/ROSCO: A Reference Open Source Controller for Wind Turbines), in which case the controller constants are specified in the DISCON input file (DISCON.IN).
Best regards,