Hi all, I meet some problem when I trying to validate the Yaw-rate control by using OpenFAST.
At the first, I want to reproduce the bandwidth test in deliverable report No.D2.1 from CL-Windcon(shows blow).
Ref: http://www.clwindcon.eu/wp-content/uploads/2017/03/CL-Windcon-D2.1-Wind-turbine-controllers.pdf

In the calculation, I use compiled DLL of DRC and input the defult DISCON.IN parameter file of NREL5MW wind turbine to DRC controller.
As the result, I obatained a very stranger time series of yaw angel shows blow. (Yaw-rate control been activeted in DISCON.IN, and IPC has been turned off)

As you see, the yaw angel smoothly change to about -4 deg while wind direction stayed 0 deg. And I get the same result when I turned yaw control off in DISCON.IN.
I checked all setting in DISCON.IN and OpenFAST but still have no idea about this problem.
So, I come here to ask if you know how to solve it or maybe I did something wrong when use DRC.
I attached the DISCON.IN file and ServoDyn file that I used in my calculation here.
Thanks in advance and Best Regards,
SONG
DISCON_IN & ServoDyn file.zip
Hi all, I meet some problem when I trying to validate the Yaw-rate control by using OpenFAST.


At the first, I want to reproduce the bandwidth test in deliverable report No.D2.1 from CL-Windcon(shows blow).
Ref: http://www.clwindcon.eu/wp-content/uploads/2017/03/CL-Windcon-D2.1-Wind-turbine-controllers.pdf
In the calculation, I use compiled DLL of DRC and input the defult DISCON.IN parameter file of NREL5MW wind turbine to DRC controller.
As the result, I obatained a very stranger time series of yaw angel shows blow. (Yaw-rate control been activeted in DISCON.IN, and IPC has been turned off)
As you see, the yaw angel smoothly change to about -4 deg while wind direction stayed 0 deg. And I get the same result when I turned yaw control off in DISCON.IN.
I checked all setting in DISCON.IN and OpenFAST but still have no idea about this problem.
So, I come here to ask if you know how to solve it or maybe I did something wrong when use DRC.
I attached the DISCON.IN file and ServoDyn file that I used in my calculation here.
Thanks in advance and Best Regards,
SONG
DISCON_IN & ServoDyn file.zip