3.3 Rotor Angle Calculation

The rotor position is calculated from the observed back-EMF using following relation:

${\displaystyle {\theta }_e={\tan }^{-1}(e_{\beta }/e_{\alpha })-\mathrm{si}gn\left(w_e\right)\pi /2}$

Where:

• sign (ωe) equals to the sign to the speed (ωe)