Valeo Equipements Electriques Moteur

Vincent Gendron

Pierre Tisserand

Pierre Chassard

Guillaume Duthilleul

Philippe Hazard

A method comprises the transmission to a regulator () of the alternator of width-modulated pulses (PWM) exhibiting a duty ratio representative of a setpoint value (Vref) continuously included between a first reference duty ratio (DC) and a second reference duty ratio (DC), and the detection of these pulses by the regulator so as to generate the setpoint value. The method also comprises the transmission to the regulator of other width-modulated pulses (PWM) exhibiting a specific duty ratio (EXOF_R) which is less than the first reference duty ratio (DC) and ties between a low duty ratio (DCL) and a high duty ratio (DCH), and the detection of these other pulses by the regulator, in a first step, and the generation of an opening signal (EXOF) for a circuit for excitation of the alternator, in a second step, following this latter detection.

Method of controlling the regulation of a motor vehicle alternator, and corresponding devices

A motor vehicle regulator, including electronic regulation circuits, which can produce an excitation current in accordance with a difference between a set voltage and an output voltage measured at the terminals of an electric battery of the vehicle. The regulation circuits including a programmable signal processing interface for producing a signal, which is representative of the excitation current. The interface receives as input a plurality of signals which are representative of the excitation current. The interface including a device capable of selecting a signal which is representative, from amongst the plurality of representative signals, of the method for applying different forms of processing to the representative signal selected, and a second device for selection of processing to be applied to the representative signal. The representative signal, and the processing to be applied, being selected according to a program provided to the programmable signal interface.

Alternator voltage regulator with a programmable signal processing interface

A method for protection of an energy storage source (), in particular a battery of a motor vehicle, against possible overloading caused by prolonged application of an electric voltage to the energy storage source, this voltage being generated at least partially by a rotary electric machine () such as an alternator or an alternator-starter, the method comprising the following steps:

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Saint Maur des Fosses, France

Vincent Gendron