1. Elementary equations of the bipolar machine

In order to maintain maximum generality, we will take as independent variables (figure 1 ) :

θ : angle between phases 1 and a ;

u _a , u _b , u _c , i _a , i _b , i _c : rotor voltages and currents ;

u ₁ , u ₂ , u ₃ , i ₁ , i _...