3. Interpretation of previous formulas. Stator and rotor markings

Consider the schematic representation of the motor stator, which we assume to be bipolar (figure 2 ). A point M in the air gap is marked by the angular abscissa x.

• The induction fields created at M by the three stator windings 1, 2 and 3, through which currents i ₁ , i ₂ and i ₃ flow, are directed along the OM direction. Their values are : $k{i}_1\text{cos }x;k{i}_2\text{cos}\left(x-\frac{2\text{π}}{3}\right)\text{ et }k{i}_3\text{cos}\left(x-\frac{\text{4π}}{3}\right),$

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