Search found 15 matches

by zarei.atefe
Tue Dec 03, 2019 3:16 am
Forum: Controls
Topic: Blade pitch control
Replies: 26
Views: 10567

Re: Blade pitch control

thanks for your help. i read it. There, it is said that ωn = 4Ω, where Ω is the rotor angular velocity and I've considered 20,463 rpm for the rotor speed and it is said ξ = 80% of critical damping. I want to know how much the critical damping value is? Yes i am working FAST-Simulink interface now. b...
by zarei.atefe
Fri Nov 29, 2019 3:06 pm
Forum: Controls
Topic: Blade pitch control
Replies: 26
Views: 10567

Re: Blade pitch control

hi every one
How much should be used to the value of time constant of the 1.5 MW wind turbine pitch actuator for the FAST reference turbine?
by zarei.atefe
Fri Nov 29, 2019 9:48 am
Forum: Controls
Topic: Blade pitch control
Replies: 26
Views: 10567

Re: Blade pitch control

Yes, I'm running from Simulink.
by zarei.atefe
Fri Nov 29, 2019 9:09 am
Forum: Controls
Topic: Blade pitch control
Replies: 26
Views: 10567

Re: Blade pitch control

No I did not enable these. I just set PCMODE to 4 and then run the simulation.
by zarei.atefe
Fri Nov 29, 2019 3:12 am
Forum: Controls
Topic: Blade pitch control
Replies: 26
Views: 10567

Re: Blade pitch control

Hi everyone
I'm working on individual pitch control and set PCMode to 4 to get the pitch command from the simulink controller but the pitch remains fixed to the final value of 2.6 and does not command the simulink. Where is the problem?
thanks
by zarei.atefe
Tue Nov 05, 2019 6:43 am
Forum: Controls
Topic: Pitch and Torque Cntrl (Region 3)
Replies: 36
Views: 9581

Re: Pitch and Torque Cntrl (Region 3)

thanks for your answer

I download AeroDyn v15.04 but the AeroDyn Input file related to Test 11-14 (1.5 MW Wind turbine) does not exist. How to find it?
by zarei.atefe
Sun Nov 03, 2019 1:53 pm
Forum: Controls
Topic: Pitch and Torque Cntrl (Region 3)
Replies: 36
Views: 9581

Re: Pitch and Torque Cntrl (Region 3)

hi mr jonkman Error reported by S-function 'FAST_SFunc' in 'OpenLoopA/FAST Nonlinear Wind Turbine/S-Function': FAST_Solution:FAST_AdvanceStates:AD_UpdateStates:BEMT_UpdateStates(node 3, blade 3):BEMT_UnCoupledSolve:DeterminePhiBounds:There is no valid value of phi for these operating conditions! Vx ...
by zarei.atefe
Wed Jun 12, 2019 12:53 am
Forum: Controls
Topic: nonlinear state-space model
Replies: 12
Views: 3409

Re: nonlinear state-space model

thanks.
by zarei.atefe
Tue Jun 11, 2019 11:12 am
Forum: Controls
Topic: nonlinear state-space model
Replies: 12
Views: 3409

Re: nonlinear state-space model

i need the nonlinear differential equations of the wind turbine for region 3 goals.
But I can not find them.

thanks.
by zarei.atefe
Tue Jun 11, 2019 8:12 am
Forum: Controls
Topic: nonlinear state-space model
Replies: 12
Views: 3409

Re: nonlinear state-space model

Thank you very much for your help
Now, my question is, as you say, since non-linear equations of region 3 wind turbines are not specifically available, so can not design nonlinear controllers which require nonlinear dynamics?
by zarei.atefe
Tue Jun 11, 2019 5:00 am
Forum: Controls
Topic: nonlinear state-space model
Replies: 12
Views: 3409

Re: nonlinear state-space model

thanks
and So, my question is, a nonlinear relation between the pitch angle and the rotor speed is available?
by zarei.atefe
Tue Jun 11, 2019 3:53 am
Forum: Controls
Topic: nonlinear state-space model
Replies: 12
Views: 3409

Re: nonlinear state-space model

theta is the output pitch angle given into the model.
Is it possible to email The nonlinear equations of motion used by FAST to me ?
My work depends heavily on having nonlinear equations of motion and pitch actuator.

thanks for your help.
by zarei.atefe
Tue Jun 11, 2019 1:59 am
Forum: Controls
Topic: nonlinear state-space model
Replies: 12
Views: 3409

Re: nonlinear state-space model

Hello thanks for your answer To design a non-linear controller, I must have a nonlinear equation of pitch actuator and blade root bending moment related to the 13th test of FAST8.16. Can you give me them? In fact, I want the nonlinear relation of the attached equation related to the 13th test of FAS...
by zarei.atefe
Fri May 03, 2019 9:22 am
Forum: Controls
Topic: Linearization of the full system
Replies: 7
Views: 3698

Re: Linearization of the full system

hello i have a question about linearization.I want to design a PID controller for pitch control. I need to use linearization and must pcmode = 0 in the linearization, but in this mode, the pitch control command is not taken from the simulink and the pitch angles are commanded zero. How can I use pcm...
by zarei.atefe
Fri Apr 26, 2019 12:54 am
Forum: Controls
Topic: nonlinear state-space model
Replies: 12
Views: 3409

nonlinear state-space model

hello I want to design a nonlinear individual pitch controller for wind turbine load reduction in my master's thesis, but I don't have the nonlinear state-space model of the 1.5 MW wind turbine available in the FAST test. It is essential for me to have those non-linear equations to design a nonlinea...

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