METHOD OF BRUSH WEAR DETECTION IN A VEHICLE ALTERNATOR / STARTER MOTOR

The method according to the invention is implemented in an alternator-starter system (1) coupled to an engine (2). The system is able to operate as a starter and as an alternator and the alternator-starter (3) comprises an excitation circuit (10) supplying excitation current through the brushes (90)...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	GRANZIERA, CYRIL, DUBUS, JEAN-MARC, DEVANNE, FREDERIC, MALBRANQUE, RONALD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CURRENT COLLECTORS ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION LINE CONNECTORS MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PERFORMING OPERATIONS PHYSICS TESTING TRANSPORTING VEHICLES IN GENERAL
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The method according to the invention is implemented in an alternator-starter system (1) coupled to an engine (2). The system is able to operate as a starter and as an alternator and the alternator-starter (3) comprises an excitation circuit (10) supplying excitation current through the brushes (90) to an excitation coil (8) housed in the rotor (5). In accordance with the invention, the method comprises the steps of calculating a mean duty ratio of the excitation current when the system is operating as an alternator, comparing this mean duty ratio with a threshold value and detecting an end of life (FV) of the brushes (90) when the mean duty ratio goes above the threshold value.