Aerodynamic Torque - Generator dof enabled

[Jason.Jonkman]

Dear @Giulia.DaPra,

Presumably the following forum topics that are related to your question answer your question?:

Difference between 'RtAeroMxh' and 'RotTorq' in an onshore turbine

Dear Jason, Checking the outputs for an onshore test (Test 24 with all DOFs = False) I noticed a difference between the ‘RtAeroMxh’ and ‘RotTorq’ trends (Figure 1). Since the ‘RtAero’ loads are in a frame rotating around x, I would expect the torque around this axis to be the same in the transition from rotating frame to fixed, instead I notice that ‘RotTorq’ is much less noisy by ‘RtAeroMxh’. Could you tell me the reason? Since to get ‘TwBsFx’ you have to use ‘RotTorq’ plus the transport mom…

FAST: Rotor torque during increase of wind speed

Hello everyone, I am having trouble making sense of some simulation results with FAST: I am using the Simulink interface to do some very simple simulations of a wind turbine. All control inputs are set to fixed values, i.e., generator torque, power, pitch angles and yaw command. The wind input file is a simple hub-height wind with a constant value. After some time, the wind signal jumps to a higher value. Thus, since all control inputs are kept constant, the wind turbine accelerates to a highe…

Resistant moment of the rotor and of the electric generator

Hi, I’d like to know if you have the values of the rotational frequency of the rotor blades (rot_freq) in function of the mean wind speed at the hub (Um_hub) and of the aerogenerators that you test for exemples in FAST. Is it possible also to have the trend of the resistant angular momentum in function of the Um_hub or of the rot_freq ? In the analysis of the dynamic response of the aerogenerator with the rot_freq varing in time (FAST makes it, i believe), noting the moment around the rotor a…

Best regards,