Valeo Equipements Electriques Moteur

Daniel Pereira

Gilbert Konan

Laurent Domenger

Abdelaziz Azizi Samir

Jean-François Duguey

Son Ha Tran

The device according to the invention controls a polyphase inverter () intended for powering from a DC current source (CC) a polyphase rotating electric machine (). The device is of the type of those generating commutation functions driving commutation elements () of the inverter in such a way as to obtain a reduction of the losses in the commutation elements and a decrease of an effective current in a decoupling capacitor () of the source (CC). According to the invention, this reduction and this decrease are obtained by means of a set of control strategies () determining the commutation functions by using additional degrees of freedom of the polyphase machine () with respect to a three-phase reference machine. The polyphase machine comprises first and second phase windings forming a first three-phase system () and a second three-phase system () with distinct neutral points () offset angularly by a predetermined angle of offset (&#x398;). The first and second phase windings are linked respectively to three first and three second power arms () formed by the commutation elements.

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Fresnes, France

Daniel Pereira