Turbine shut down operation

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Yajun.Ren
Posts: 17
Joined: Mon Jan 21, 2019 6:54 am
Organization: The University of Edinburgh
Location: UK

Turbine shut down operation

Postby Yajun.Ren » Thu Sep 05, 2019 1:32 pm

Hi all,

I would like to ask that if the the rotor can be stopped at the specific time during the simulation. For example, if the full time period of the simulation is 1000s, can I stop the rotor at 500s?

Best regards
Yajun

Jason.Jonkman
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Location: Boulder, CO
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Re: Turbine shut down operation

Postby Jason.Jonkman » Thu Sep 05, 2019 1:37 pm

Dear Yajun,

Yes, there are a number of methods available in the ServoDyn module of FAST / OpenFAST to trigger a turbine shutdown event including pitching the blades, disabling the generator, applying a high-speed shaft brake, yawing the turbine, etc.

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

Yajun.Ren
Posts: 17
Joined: Mon Jan 21, 2019 6:54 am
Organization: The University of Edinburgh
Location: UK

Re: Turbine shut down operation

Postby Yajun.Ren » Mon Sep 09, 2019 5:04 am

Dear Jason,

Thank you very much for you reply.

So if I would apply the pitch control to stop the rotor by the specific time, can I just use Pitch Controller block in the Simulink interface.

Best regards,
Yajun

Jason.Jonkman
Posts: 4221
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Turbine shut down operation

Postby Jason.Jonkman » Mon Sep 09, 2019 6:55 am

Dear Yajun.Ren,

Yes, you can use Simulink for that.

The override pitch maneuver settings in the ServoDyn input file (TPitManS(k), PitManRat(k), BlPitchF(k) for k={1,2,3}) are another way to stop the rotor via simple pitch ramps.

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

Yajun.Ren
Posts: 17
Joined: Mon Jan 21, 2019 6:54 am
Organization: The University of Edinburgh
Location: UK

Re: Turbine shut down operation

Postby Yajun.Ren » Wed Sep 11, 2019 10:35 am

Dear Jason,

Thank you for your reply. Yes I think the modification of ServoDyn input file is a much easier way. As my understand, to stop the blade rotation from 1000s, I changed the Pitch Control sector as follow:


---------------------- PITCH CONTROL -------------------------------------------
5 PCMode - Pitch control mode {0: none, 3: user-defined from routine PitchCntrl, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)
0 TPCOn - Time to enable active pitch control (s) [unused when PCMode=0]
1000.0 TPitManS(1) - Time to start override pitch maneuver for blade 1 and end standard pitch control (s)
1000.0 TPitManS(2) - Time to start override pitch maneuver for blade 2 and end standard pitch control (s)
1000.0 TPitManS(3) - Time to start override pitch maneuver for blade 3 and end standard pitch control (s) [unused for 2 blades]
2 PitManRat(1) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 1 (deg/s)
2 PitManRat(2) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 2 (deg/s)
2 PitManRat(3) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 3 (deg/s) [unused for 2 blades]
90 BlPitchF(1) - Blade 1 final pitch for pitch maneuvers (degrees)
90 BlPitchF(2) - Blade 2 final pitch for pitch maneuvers (degrees)
90 BlPitchF(3) - Blade 3 final pitch for pitch maneuvers (degrees) [unused for 2 blades]

Could you please let me know if I am correct or not.
Best regards,
Yajun

Jason.Jonkman
Posts: 4221
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Turbine shut down operation

Postby Jason.Jonkman » Wed Sep 11, 2019 10:51 am

Yes, those look like reasonable settings to me.

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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