# IEA 22 MW monopile offshore wind turbine **URL:** \ **Category:** Controls\ **Created:** [August 11, 2024, 9:39pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390 "2024-08-11T21:39:12Z")\ **Posts on this page:** 14\ **Page:** 2
**Author:** ![Pietro.Bortolotti](https://avatars.discourse-cdn.com/v4/letter/p/c6cbf5/32.png) [@Pietro.Bortolotti](https://forums.nlr.gov/u/Pietro.Bortolotti)\ **Post date:** [August 20, 2024, 4:57pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/21 "2024-08-20T16:57:15Z")
Switching back to modeling the structural dynamics of the blades with ElastoDyn will make you miss torsional effects, in addition to some more complex structural dynamics. I guess it depends on why you are running the IEA22. If you are looking at detailed loads, especially on the blades, then you are stuck with BeamDyn. OpenFAST v5.0 will speed up BeamDyn, but it鈥檚 a few months away ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [August 20, 2024, 10:43pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/22 "2024-08-20T22:43:06Z")
Thanks for your detailed reply. I want to get the forces at the top of the monopile at the seabed. In that case If I turn off BeamDyn is that Ok?- Regards Marwa ---
**Author:** ![Pietro.Bortolotti](https://avatars.discourse-cdn.com/v4/letter/p/c6cbf5/32.png) [@Pietro.Bortolotti](https://forums.nlr.gov/u/Pietro.Bortolotti)\ **Post date:** [August 21, 2024, 12:32pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/23 "2024-08-21T12:32:43Z")
This is a subjective choice. Your judgement will be the right one. Good luck! 馃槈 ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [August 26, 2024, 7:17pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/24 "2024-08-26T19:17:07Z")
Dear [Pietro.Bortolotti](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/23), I have a question please, I compare the dynamic behavior between IEA 15 MW and IEA 22 MW , I attach the Generator power output of the two turbines ![image](https://europe1.discourse-cdn.com/nrel/original/2X/6/6caca30e13d4d58634162caf8b1d017de6382453.png) why the excursions of the minimum and maximum values increase with the wind speed in case of 15 MW and it almost constant in case of 22 MW? Is there a specific reason? Did I made something wrong in my simulations? Regards, Marwa ---
**Author:** ![Pietro.Bortolotti](https://avatars.discourse-cdn.com/v4/letter/p/c6cbf5/32.png) [@Pietro.Bortolotti](https://forums.nlr.gov/u/Pietro.Bortolotti)\ **Post date:** [August 26, 2024, 7:45pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/25 "2024-08-26T19:45:06Z")
The difference is in the power control logic of ROSCO. The IEA22 uses the constant power control ([IEA-22-280-RWT/OpenFAST/IEA-22-280-RWT-Monopile/IEA-22-280-RWT\_DISCON.IN at fe07471393c5b61eb0c7072bbfe2337ae80f3a81 路 IEAWindTask37/IEA-22-280-RWT 路 GitHub](https://github.com/IEAWindTask37/IEA-22-280-RWT/blob/fe07471393c5b61eb0c7072bbfe2337ae80f3a81/OpenFAST/IEA-22-280-RWT-Monopile/IEA-22-280-RWT_DISCON.IN#L14)), whereas for the IEA15 ROSCO uses the constant torque control ([IEA-15-240-RWT/OpenFAST/IEA-15-240-RWT-Monopile/IEA-15-240-RWT-Monopile\_DISCON.IN at 2575756896ab45575ab1c094da76fde65a3d1d47 路 IEAWindTask37/IEA-15-240-RWT 路 GitHub](https://github.com/IEAWindTask37/IEA-15-240-RWT/blob/2575756896ab45575ab1c094da76fde65a3d1d47/OpenFAST/IEA-15-240-RWT-Monopile/IEA-15-240-RWT-Monopile_DISCON.IN#L14)). You should be able to see the difference in the torque signals ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [August 27, 2024, 12:41pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/26 "2024-08-27T12:41:21Z")
Thanks Dr. [Pietro.Bortolotti](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/25), for your detailed reply. another question please, I know that the rotor thrust increased until reaching the rated wind speed then decrease, but I don鈥檛 know why in my simulations the rotor thrust is max at wsp 10 m/s not the rated 11.5 m/s, what do you think makes this error please? I used pitch and rotor speed initial conditions from interpolation between 11 m/s and 12 m/s ![image](https://europe1.discourse-cdn.com/nrel/original/2X/4/4b2b00a8f2070c5e9c093ab1ca805d3d1d9aa23b.png) Regards, Marwa ---
**Author:** ![Pietro.Bortolotti](https://avatars.discourse-cdn.com/v4/letter/p/c6cbf5/32.png) [@Pietro.Bortolotti](https://forums.nlr.gov/u/Pietro.Bortolotti)\ **Post date:** [August 27, 2024, 1:07pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/27 "2024-08-27T13:07:34Z")
hello Marwa, that鈥檚 not an error, that鈥檚 just the response of the aeroelastic model driven by ROSCO, which has the peak thrust shaving logic turned on ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [August 27, 2024, 1:13pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/28 "2024-08-27T13:13:33Z")
Thanks Dr. [Pietro.Bortolotti](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/27), for your quik reply. now I see like this paper. Thanks again for your help ![image](https://europe1.discourse-cdn.com/nrel/original/2X/3/38271ed5daf9d184faf6a729176e4606c4ec2845.png) ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [August 28, 2024, 6:22am UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/29 "2024-08-28T06:22:30Z")
Dear all, I know that I ask a lot of questions that may be basic. I want to run OpenFAST with DTU Wind Energy Controller for turbines IEA 15 MW, this link have only [DTUWEC\_for\_OpenFAST.so](https://github.com/IEAWindTask37/IEA-15-240-RWT/blob/master/OpenFAST/IEA-15-240-RWT-Monopile_wDTUcontroller/control/DTUWEC_for_OpenFAST.so) which is for linux, is there a way to find the .dll file for windows > **[IEA-15-240-RWT/OpenFAST/IEA-15-240-RWT-Monopile\_wDTUcontroller/control at master...](https://github.com/IEAWindTask37/IEA-15-240-RWT/tree/master/OpenFAST/IEA-15-240-RWT-Monopile_wDTUcontroller/control)** > > 15MW reference wind turbine repository developed in conjunction with IEA Wind - IEAWindTask37/IEA-15-240-RWT Regards, Marwa ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [August 28, 2024, 2:59pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/30 "2024-08-28T14:59:50Z")
Dear @Marwa.Mohamed, You can find the BasicDTUController in the DTU GitLab repository: [OpenLAC / BasicDTUController 路 GitLab](https://gitlab.windenergy.dtu.dk/OpenLAC/BasicDTUController). I鈥檓 personally not too familiar with this, but from the ReadMe, it appears that you can compile for Windows. Alternatively, you can use the ROSCO controller with the IEA Wind 15-MW RWT in place of the BasicDTUController. Best regards, ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [August 28, 2024, 3:26pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/31 "2024-08-28T15:26:40Z")
Thanks for your consideration Regards, Marwa ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [September 3, 2024, 7:13pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/32 "2024-09-03T19:13:39Z")
Dear Dr. [Pietro.Bortolotti](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/27), I have a question please. ![image](https://europe1.discourse-cdn.com/nrel/original/2X/9/92f024f8a258f085b0a62f15426dd226002d2aa0.png) ![image](https://europe1.discourse-cdn.com/nrel/original/2X/0/0184cdd07a2d7ea12c99f4831ba299e9992af20b.png) why in case of NREL 5 MW (with ROSCO controller) and IEA 15 MW, the max thrust is exactly at the rated wind speed despite that the three turbines have PS\_Mode=1 Regards, Marwa ---
**Author:** ![Pietro.Bortolotti](https://avatars.discourse-cdn.com/v4/letter/p/c6cbf5/32.png) [@Pietro.Bortolotti](https://forums.nlr.gov/u/Pietro.Bortolotti)\ **Post date:** [September 3, 2024, 8:29pm UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/33 "2024-09-03T20:29:27Z")
Marwa, I don鈥檛 know that you can do a 1-1 comparison among these models, which have been developed at different times with different codes. ROSCO must have been tuned slightly differently, and the peak shaving logic differs slightly. This said, the peak thrust shaving logic tries to plateau thrust around max wind speed, so where exactly the peak happens should not really matter ---
**Author:** ![Marwa.Mohamed](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/marwa.mohamed/32/6001_2.png) [@Marwa.Mohamed](https://forums.nlr.gov/u/Marwa.Mohamed)\ **Post date:** [September 4, 2024, 2:37am UTC](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/34 "2024-09-04T02:37:15Z")
Thanks Dr. [Pietro.Bortolotti](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390/33) for your detailed answer. [Previous page](https://forums.nlr.gov/t/iea-22-mw-monopile-offshore-wind-turbine/7390.md?page=1)