The generator speed is negative

[1yihangyang]

When I use OpenFast and Simulink co-simulation, why my model is running out of a generator with a negative speed。
The model is as follows：

Below is the torque control model：

The following table describes the running text and parameter settings：

[jjonkman]

Dear @1yihangyang,

The GenSpeed output of OpenFAST is expressed relative to the high-speed shaft in rpm; I'm not sure why are are again multiplying by GBRatio (97). You also seem to be mixing units, e.g., converting GenSpeed to rad/s, but then keeping SIG_SySp (1173.7 in rpm) in your pitch controller.

I'm also not sure where you are getting the Simple Induction Generator (SIG) properties for the NREL 5-MW baseline wind turbine (considering this turbine is not typically modeled with an induction generator), e.g., SIG_RtTq = 1367.9 N*m seems far too small.

Best regards,