Forum
Important Notice for New User Registrations
To combat an increasing number of spam and bot registrations, we now manually approve all new user registrations. While this may cause a delay until your account is approved, this step is essential to ensure the quality and security of this forum.
To help us verify your registration as legitimate, please use a clear name as user name or an official email address (such as a work, university, or similar address). If you’re concerned that we may not recognize your registration as non-spam, feel free to email us at with a request to approve your username.
Emergency stop
Hello, Professor David, I want to know how to set it in the wind turbine Simulation Definition Module, such as allowing the wind turbine to enter a shutdown state after running for 200 seconds, as shown in the following figure.
Uploaded files:- You need to login to have access to uploads.
Hi Sun,
typically, such events are handled by the turbine controller library. For instance the Basic DTU Controller has the ability to trigger such events. Check out the Basic DTU Controller documentation.
However, in QBlade there is also the option to define custom events that override the controller settings and work the same for all types of controllers. Check out the documentation of the Event Definition File.
If you want to simulate an emergency brake event, dont forget to also define the brake model in the Main Definition File.
BR,
David
Thank you very much, Professor David.
Hi
I want to use volturn example and setting brake on it.
By default in this example the brake model is set. I add an event for blade failure, mooring failure and setbrake. I can see the effect of blade and mooring failure, but i can not see brake effect.
I would be so thankful if you could help me.
I set mooring failure event based on your instruction.
Regards
Hello,
I think the issue is that the maximum brake torque, defined in the structural model for the Volturn FOWT, is too low to significantly reduce the rotational speed of the rotor.
The brake torque is set by the below parameters in the structural model main file:
——————————- BRAKE MODEL ——————————-
28116.2 BRKTORQUE – maximum brake torque
0.6 BRKDEPLOY – brake deploy time (s) (only used with DTU style controllers)
0.0 BRKDELAY – brake delay time (s) (only used with DTU style controllers)
In the attached screenshot you see the brake torque being applied correctly at t=60s (green curve), however the impact on the rotational speed is very low, when compared to the simulation without brake event (red curve).
I would suggest to increase the maximum brake torque to see a noticable effect on the rotor rpm.
BR,
David
Uploaded files:- You need to login to have access to uploads.
Thanks 🌷
