*3.2. Drivetrain*

The target wind turbine is a PMSG type without a gearbox, so Equation (3) can be derived from Figure 3. This component receives the generator torque and aerodynamic torque from a generator and aerodynamics model, calculates the generator speed, and delivers it back to the aerodynamics and generator model.

$$I\_s \left( I\_r + I\_\mathcal{S} \right) \frac{d\Omega\_r}{dt} = I\_t \frac{d\Omega\_r}{dt} = I\_t \frac{d\Omega\_\mathcal{S}}{dt} = T\_a - T\_\mathcal{S} \tag{3}$$

**Figure 3.** Drivetrain model.
