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:
Jan. 09, 2018
Filed:
Aug. 26, 2016
Valeo Equipements Electriques Moteur, Creteil, FR;
Laurent de Lamarre, Paris, FR;
Pierre Tisserand, Limeil Brevannes, FR;
Pierre Sardat, Le Raincy, FR;
Laurent Labiste, Saint Maur des Fossés, FR;
Pierre Chassard, Creteil, FR;
Guillaume Duthilleul, Salles, FR;
Pierre-François Ragaine, Saints, FR;
Romuald Morvany, Montigny le Bretonneux, FR;
Jeremy Lagrange, Limeil Brevannes, FR;
Abstract
The excitation circuit according to the invention controls an excitation current (lexc) in an excitation winding () of an alternator by means of an on-board network voltage control loop (Vbat+,) of the vehicle, and comprises a first MOS power transistor () which is connected between a first positive supply terminal Vbat+ (), and a first excitation terminal (), and is controlled by the control loop by means of a first control circuit (), a second MOS power transistor (), which is connected between the first excitation terminal and a second excitation terminal () which is connected to a ground terminal () and acts as a free wheel diode, whilst being controlled by means of a second control circuit (). According to the invention, the circuit additionally comprises a control loop () of a drain-source voltage (Vds) of the second transistor.