Valeo Equipements Electriques Moteur

Thierry Mandion

Michaël Chemin

Philippe Masson

Roger Abadia

Brice Lecole

Fabien Guerin

Patrick Rondier

Damien Chaumat

Cédric Leboeuf

Benoit Gareil

The method of controlling a polyphase rotating electric machine, the machine operating as a generator and being linked to an electrical network (), is of the type of those consisting in short-circuiting at least one phase winding in the event of load shedding. A short-circuit command (SAND) is generated for the phase winding when a first measurement voltage V of a voltage B+ of the network exceeds a first predetermined threshold value V1 and when a phase current (I&#x3a6;) in the phase winding vanishes and changes direction. The first measurement voltage V may be obtained by filtering the voltage B+ of the network with a predetermined time constant TF.

Method of controlling a rotating electric machine, control system and rotating electric machine corresponding thereto

According to the disclosure, a power sub-assembly () for a micro-hybrid system () in an automobile includes an AC-DC converter () with a transistor bridge (), an energy storage device () and a power bus () including at least two cylindrical conductors ('). According to the disclosure, conductors (&#x2032;) include respective coaxial cylindrical surfaces (&#x2032;). The power bus integrated in the power subassembly allows for a parasitic inductance that is by far lower than that of the standard cables in power subassemblies of the prior art, particularly in order to avoid overvoltage at the terminals of the transistors in the AC-DC converter.

Power subassembly for micro-hybrid system in an automobile

The alternator comprises a wound rotor and a stator with a number of phases connected to a rectifier bridge equipped with switches () in the form of MOS type transistors, such as MOSFET type transistors, characterised in that the transistors () are voltage-rated to work by avalanche effect or linearly in the case of a load dump.

Alternator with rectifier bridge in particular for motor vehicle

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Champagne sur Seine, France

Thierry Mandion