Reduce eddy currents in a laminated alternator core

Reduce eddy currents in a laminated alternator core

An alternator for motor vehicles having a claw-pole rotor whose stator (18) has a coated laminated core (15) which comprises thin sheet metal laminae (23, 23a). In order to reduce the eddy current losses in the stator laminated core (15), the thin sheet metal laminae (23) are not insulated in the ou...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HELMUT OLBERTZ, UWE KIRBERG, JAROSLAV MORAVEK, ISTVAN RAGALY
Format: Patent
Sprache:eng
Schlagworte:
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:An alternator for motor vehicles having a claw-pole rotor whose stator (18) has a coated laminated core (15) which comprises thin sheet metal laminae (23, 23a). In order to reduce the eddy current losses in the stator laminated core (15), the thin sheet metal laminae (23) are not insulated in the outer regions and are electrically insulated from each other in the central region (23a) by means of an insulating layer (24). Laminae 23 radially extend beyond the stack and have apertures for receiving screws to centre the core on the alternator housing.