Difference between Generator Torque and High Speed Shaft Tq

Dear all,

Maybe this is a very dummy doubt, but I can’t see why the variable GenTq is different from HSShftTq in FAST.
They shouldn’t have the same value, since the GenTq is directly connected to the High Speed Shaft?

Thanks,

Eduardo Menezes

Dear Eduardo,

GenTq and HSShftTq are different in FAST. See the following forum topic for a discussion on this topic, as well as more information on the drivetrain model of FAST: http://forums.nrel.gov/t/resistant-moment-of-the-rotor-and-of-the-electric-generator/408/1.

Best regards,