Valeo Equipments Electriques Moteur

Jean-Francois Gautru

Pierre Faverolle

Pierre Tisserand

Pierre Chassard

Jean-Marc Dubus

Gregory Godefroy

Thomas Vera

Nathalie Canitrot

A rotor for a rotary electrical machine, fitted such as to rotate around an axis (X), and comprising a pair of magnet wheels () which each have a flange () and a plurality of magnetic poles (). Each magnetic pole () extends axially from the flange () towards a free end (), and has an outer surface (). The outer surface () of at least one magnetic pole () of at least one magnet wheel (17) has at least one decreasing segment (). The decreasing segment () is configured such that a radius between the said outer surface () and the axis (X) of the rotor () decreases, when going along the said decreasing segment (), towards the free end () of the said magnetic pole ().

Rotor for rotary electrical machine

The invention relates to a device for controlling an alternator of the type that controls a DC voltage (B+A) generated by the alternator () according to a predetermined set voltage (U) by monitoring the intensity of an energizing current (I) flowing through an energizing circuit of the alternator. According to the invention, the device includes a voltage-control loop () and a temperature-control loop () which comprises a temperature sensor supplying a current temperature (T) of components of the alternator, a subtracter () supplying a temperature error (&#x3f5;) between the current temperature (T) and a maximum acceptable temperature (T) and a control module () supplying a maximum admissible energizing percentage (r) in accordance with the temperature error according to a predetermined control law.

Device for controlling a motor vehicle alternator, and corresponding alternator

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Montreuil, France

Jean-Francois Gautru