The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2000
Filed:
Dec. 15, 1997
Jean-Marie Pierret, Paris, FR;
Raymond Rechdan, Saint-Maurice, FR;
Valeo Equipments Electriques Moteur, Creteil, FR;
Abstract
A system and method are provided to manage the excitation of an automobile alternator through the use of its regulator which delivers to the inductor of the alternator a pulse width modulation excitation signal. The regulator receives, from an external management unit, a pulse width modulation excitation control signal with a frequency less than that of the excitation signal. The regulator delivers an excitation signal with a pre-programmed cycle ratio for a sufficient duration to enable the regulator to determine the control information carried by the control signal from the management unit. The regulator continues the excitation signal with the pre-programmed cycle ratio until receipt of instruction from the management unit to regulate the battery voltage.