OC3 Phase IV - LC 5.1 Controller Question

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Sean.Quallen
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OC3 Phase IV - LC 5.1 Controller Question

Postby Sean.Quallen » Fri Mar 28, 2014 1:57 pm

Hello all!

I'm probably misreading something here, so I'll ask before beating my head against the wall. In LC 5.1 of Phase IV of the OC3 the NREL-FAST simulation results present the pitch of blade 1 (BldPitch1) as a constant 0 degrees. Is that correct? Wasn't the blade pitch controller turned on for this simulation?

Thanks!
Sean Quallen

Jason.Jonkman
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Re: OC3 Phase IV - LC 5.1 Controller Question

Postby Jason.Jonkman » Fri Mar 28, 2014 4:53 pm

Dear Sean,

Yes, the pitch controller was turned on for LC 5.1 of OC3 Phase IV, but this LC involves steady hub-height winds of 8 m/s, which is well below rated wind speed. The operational pitch controller only commands angles different from zero when operating at rated power.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

Sean.Quallen
Posts: 27
Joined: Tue Jan 03, 2012 11:16 am
Organization: University of Idaho
Location: Idaho, USA

Re: OC3 Phase IV - LC 5.1 Controller Question

Postby Sean.Quallen » Sat Mar 29, 2014 9:52 am

Jason,

As always, thanks!

Sean Quallen

Dawn.Ward
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Re: OC3 Phase IV - LC 5.1 Controller Question

Postby Dawn.Ward » Thu Jul 04, 2019 9:59 am

Apologies if this question is either in an inappropriate section or has been asked before but remains unfound by myself.

I note from the OC3 phase IV hywind spar section of the 'IEA Wind Task 23' report, that in Table 17, Load 5.3 was for turbulent winds with a mean speed of 18m/s.

Would anyone know if the results for this test are available anywhere, preferably as raw simulation results as is the case for OC4 semi, but if not within a paper showing platform motion responses?

Jason.Jonkman
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Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
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Re: OC3 Phase IV - LC 5.1 Controller Question

Postby Jason.Jonkman » Thu Jul 04, 2019 8:27 pm

Dear Dawn,

All of the OC3 results (from the final revision of each Phase) are available here: https://drive.google.com/drive/folders/ ... 3RkZ3FHVlE.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov


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