Which file to modify to simulate a shut-down ?

[ACH52100]

Hello !

Currently I am trying to simulate a normal shut down on 5MW offshore wind turbine. I ve followed the intructions given on this page . The problem is that I don't find the file containing the parameters to change. As example, within the ServoDyn file, I see the parameters "PCMode" or "TPitManS" to change, but not the "TPitManE" one. So, I don't know if I am looking the wrong file or if my ServoDyn file is incomplete. I put 2 screen shots to illustrate the situation.

Thank you for your help ! :)

[jjonkman]

Dear @ACH52100,

What used to be TPitManE in FAST v6 was replaced with PitManRat in FAST v8 and OpenFAST. Typically, when the safety system overrides the operational controller, it will command a given pitch rate. We found it difficult to set TPitManE because the actual pitch angle when time TPitManS is reached is generally unknown, so, it was not possible to calculate TPitManE based on this known pitch rate. So, we decided to replace the TPitManE with the rate of the override pitch maneuver (PitManRat), which should be easier to set. This is mentioned in the FAST v8 ReadMe file: https://openfast.readthedocs.io/en/main/_downloads/5f2ddf006568adc9b88d8118dc3f1732/FAST8_README.pdf.

Best regards,

[ACH52100]

Thank you very much for the explanations ! Now everything is clear in my mind ! :D