Valeo Equipements Electriques Moteur

Valeo Equipments Electriques Moteur

Eckart Westerholt

Jean-Marc Dubus

Dominique Sebille

The invention relates to a control device for a reversible, multi-phased rotating electrical machine which can operate in alternator or motor mode. The inventive device comprises a main battery (), an electric network () and a unit () for controlling and commanding an inverter and a rectifier bridge (P) for selection in alternator mode or starter mode. According to the invention, the machine is powered by the inverter which is connected to a start-up control unit which can provide a voltage greater than that provided by the main battery () over the network (). The inverter is connected to the positive terminal of the secondary voltage source via a first switch (K) in motor mode, while the rectifier bridge (P) is connected to the positive terminal of the main battery via a second switch (K) in alternator mode.

Control device for a reversible rotating electrical machine

Method for control of a multi-phase, reversible, rotating electrical machine, called alternator/starter, for a motor vehicle with a heat engine capable of operating either as an electrical generator&#x2014;alternator mode&#x2014;or as an electric motor, especially in order to start the heat engine, characterised in that, during operation in electric-motor mode, the said machine is driven according to two modes corresponding to different speed/torque characteristic curves, namely a first mode, called starter mode, making it possible to drive the heat engine of the vehicle in order to start it with high torques for low speeds, while the second mode, called auxiliary-motor mode, makes it possible to drive at least one power-consumer unit, such as an accessory, and/or the heat engine, at higher speeds and lower torques than those of the first mode.

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Munich, Germany

Eckart Westerholt