Drivetrain Properties of 5MW wind turbine(test18)

Wind & Water Computer-Aided Engineering Software Tools
1

Dear Jason,
I am using NERL 5MW wind turbine(test18)and I found Drivetrain Properties in your article “the Definition of a 5-MW Reference Wind Turbine for Offshore System Development”,Some parameters are shown in the attached image.e.g.Generator Inertia about High-Speed Shaft is available(534.116kg.m^2),I want to confirm whether this value is the value Jg in the attached figure.
I also want to find the value of the rotor inertia about the low-speed Shaft,Is this an undisclosed parameter？
BTW,Is there anything to do with the values of Equivalent Drive-Shaft Torsional-Damping Constant and Kg(or Kr) in the seconde attached figure?

Thank you in advance!

Best regards
传动轴属性.png
![U{}LZLEG%LUZ@BD]GRT(ESL.png|520x530](upload://kSQVBkeUtQQwIoxJEU7J7MT4y7i.png)

2

Dear Kaiyu.Fang,

Yes, I agree that Jg = 534.116 kg-m^2 for the NREL 5-MW baseline wind turbine (referenced to the high-speed shaft). When the rotor is modeled rigidly (without blade flexibility, then the rotor inertia (Jr) is calculated internally by the ElastoDyn module of OpenFAST and reported in the summary file (called RotIner). The value reported for the NREL 5-MW baseline wind turbine is 38759236 kg-m^2 (referenced to the low-speed shaft).

Regarding Kr and Kg from your figure, I believe a similar question was discussed in the following forum topic: Wind Turbine Modeling - #6 by Jason.Jonkman.

Best regards,