Abstract
A direct self control (DSC) strategy is applied to an induction motor with two three-phase stator winding sets. A remarkable reduction in the electromagnetic torque harmonics, as well as a meaningful minimization of the machine current distortion, are evidenced with respect to a conventional induction motor. In traction applications, electromagnetic torque harmonics induce mechanical stress on the transmission apparatus and cause resonance phenomena. On the other hand, current harmonics interact with signaling transmission, deteriorating their quality. Both drawbacks are greatly reduced in the case of the DSC strategy applied to the proposed unconventional motor. Therefore, the presented results are relevant in electrical traction, showing that the introduction of induction motors with two three-phase stator winding sets offers new interesting solutions.
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