Permanent-magnet rotor for an inner rotor type electric...

Details Permanent-magnet rotor for an inner rotor type electric... Permanent-magnet rotor for an inner rotor type electric...

2006-09-12

2006-09-12

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156450

Reexamination Certificate

active

07105971

ABSTRACT:
A total of three permanent magnets, installed in a rotor core closely to an outer cylindrical surface of the rotor core, are disposed at predetermined angular pitches in the circumferential direction of the rotor core. All of the permanent magnets are magnetized in such a manner that the direction of magnetization is the same when seen in the radial direction. A plurality of magnet-less holes, extending in the axial direction in the vicinity of the outer cylindrical surface of the rotor core, are provided between two adjacent permanent magnets.

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