Search found 93 matches

Thu Mar 23, 2017 11:55 am
Forum: Computer-Aided Engineering Software Tools
Topic: Learizing Baseline 5MW Wind Turbine with FAST
Replies: 81
Views: 22972

Re: Learizing Baseline 5MW Wind Turbine with FAST

Thank you very much for your reply When linearizing the WT around an operating point and switching on the Genspeed on we found the matrix AvgMatC=926.3 which corresponds to the generator speed as output I am wondering what is the unit of the Genspeed (rpm or rad/s)? and also the unit of the state (w...
Mon Mar 20, 2017 5:19 pm
Forum: Computer-Aided Engineering Software Tools
Topic: FAST theory manual
Replies: 296
Views: 43184

Re: FAST theory manual

Dear Mr Jonson
Can you please send this manual
e-mail: ali.elyaakoubi@gmail.com
Thanks
Fri Mar 17, 2017 11:33 am
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

Thank you the problem is solved
Tell me please what is the name of drive train shaft twist angle output from FAST.
Thu Mar 16, 2017 5:29 pm
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

I don't understood well what you mean by "the torque-speed curve in your controller that the baseline controller". But I writ you some details about the simulation My simulation was done in the region 3 of wind turbine operation, so the torque is kept fixed at the optimal value, and the tu...
Thu Mar 16, 2017 4:31 pm
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

Thank you very much Jonson for your reply When I have implemented the Pi pitch controller with the calculated parameters( Kp= 0.0071, Ki= 0.0030), there is a large divergence from the gain scheduling controller. My simulation have been done by a turbulence wind speed of 15 m/s mean value, i.e around...
Thu Mar 16, 2017 1:18 pm
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

Dear jason Tell me if I am right To calculate the PI parameters of the pitch controller the 5MW WT, we can use the relation rather than the lineraization: Kp=kp(theta=0)*GK(theta) Ki=ki(theta=0)*GK(theta), where GK(theta)=1/(1+theta/theta_k) (theta_k=6.30°) For example at the wind speed v=15 m/s, Ω=...
Wed Mar 15, 2017 10:23 am
Forum: Computer-Aided Engineering Software Tools
Topic: Learizing Baseline 5MW Wind Turbine with FAST
Replies: 81
Views: 22972

Re: Learizing Baseline 5MW Wind Turbine with FAST

Dear Sir The linearization of the CART wind turbine model, as mentioned by Wright, with FST V7 by considiring three DOF (generator speed, drive train flexibility and the balde falpwise bending moment as system with eight states is generated which are the deflexion and the velocity for each DOF. In t...
Tue Mar 14, 2017 2:16 pm
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

Dear Mr janson I want to extrait the rotating force at the main bearing LSSGagFza and LSSGagFya in Simulink (u(strmatch('LSSGagFza',OutList))). I have listed the parameters in the ElastoDyn output list but an error occured: [url]The expression: u(strmatch('LSSGagFza',OutList)) in 'NREL5MW/Fcn6' has ...
Thu Mar 09, 2017 10:09 am
Forum: Controls
Topic: WindpACK 1.5 MW
Replies: 8
Views: 6482

Re: WindpACK 1.5 MW

Yes when i disable tyhe pitch controller the model run
Can you please give me the parameters of the pitch controller of this model or some hepfull documents
Thu Mar 09, 2017 7:34 am
Forum: Controls
Topic: WindpACK 1.5 MW
Replies: 8
Views: 6482

Re: WindpACK 1.5 MW

I want to control the pitch from simulink: attched is my control model with its parameters and an overview of the error: The controller parameters are determined for an operating point Warning: Turning off Unsteady Aerodynamics due to high angle-of-attack. BladeNode = 3, Blade = 1 Warning: Turning o...
Thu Mar 09, 2017 6:31 am
Forum: Controls
Topic: WindpACK 1.5 MW
Replies: 8
Views: 6482

WindpACK 1.5 MW

Dear Sir In my simulation of Wind Pack wind turbine model I have recounted a problem where an image of matlab error is given below: Can you please help to fix the causes of the problem: Warning: Turning off Unsteady Aerodynamics due to high angle-of-attack. BladeNode = 3, Blade = 1 Warning: Turning ...
Mon Feb 13, 2017 10:24 am
Forum: Controls
Topic: FAST linearization model in Simulink
Replies: 14
Views: 6249

Re: FAST linearization model in Simulink

You can control it by using such techniques as linear quadratic or poles placement, which matches with the state space representation of the model
Sat Nov 26, 2016 10:37 am
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

Dear Jason I hope you are fine Please i met a problem when i wanted to work with aeroDyn v15 In fact I have indicated the path in the test.18 to the file of the aeroDyn V15 rather that aeroDyn for v14, and i have changed compaero to 2 but the simulation doesn't run I want to perform the time simulat...
Mon Aug 15, 2016 8:31 am
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

Thank you for your explication These are the rotating and the non rotating bending moment at the shaft's strain gage, its right. But I found in some paper the output "Rotating shear force at the main bearing" to quantify I think the loads at the main bearing Tell me if I am wright and what...
Sun Aug 14, 2016 7:30 am
Forum: Controls
Topic: Simulation of an offshore Wind turbine 5MW based DFIG
Replies: 92
Views: 30156

Re: Simulation of an offshore Wind turbine 5MW based DFIG

Thank you so much for your response Please I am wondering somes output parameters clarification : Bending moments at the main bearing at 0° and 90° are respectively LSSTipMya and LSSTipMza What means Rotating shear force at the main bearing, and what are the outputs in FAST related to the parameters...