PERMANENT MAGNET UNIT, ROTATING MACHINE HAVING PERMANENT MAGNET UNIT, AND METHOD FOR MANUFACTURING PERMANENT MAGNET UNIT

PERMANENT MAGNET UNIT, ROTATING MACHINE HAVING PERMANENT MAGNET UNIT, AND METHOD FOR MANUFACTURING PERMANENT MAGNET UNIT

The present invention provides a permanent magnet unit in which insulating layers are located at positions where an eddy current can be reduced most effectively. The permanent magnet unit includes at least one insulating layer, and a plurality of permanent magnet pieces located adjacent to each othe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FUJIHARA, Makoto, FUJIKAWA, Kenichi, SAITO, Shoichiro, OZEKI, Izumi
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Beschreibung
Zusammenfassung:The present invention provides a permanent magnet unit in which insulating layers are located at positions where an eddy current can be reduced most effectively. The permanent magnet unit includes at least one insulating layer, and a plurality of permanent magnet pieces located adjacent to each other with the at least one insulating layer in between. The at least one insulating layer is located at positions defined based on a magnitude of an eddy current flowing inside a permanent magnet, corresponding to a change in a magnetic field of the permanent magnet into which a plurality of the permanent magnet pieces are integrally formed without the at least one insulating layer.