Permanent magnet rotation type rotary machine and manufacturing

Details Permanent magnet rotation type rotary machine and manufacturing Permanent magnet rotation type rotary machine and manufacturing

1997-06-09

1999-08-10

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310251, 310262, 310 43, 310152, H02K 2112

Patent

active

059363231

ABSTRACT:
Plural magnet insertion holes are provided at a vicinity of an outer peripheral of a laminated rotor core toward a circumferential direction and extend toward an axial direction. The magnet insertion holes are divided into plural toward the axial direction and each of the plural magnet insertion holes is shifted at a predetermined angle toward a circumferential direction. The permanent magnet is arranged in the magnet insertion hole and the permanent magnet is fixed to the laminated rotor core through a clearance fill-up agent. The cogging torque is reduced and the reduction in noises is improved and a permanent magnet rotation type rotor constituted by low cost materials is prevented from damaging or destroying by the centrifugal force.

REFERENCES:
patent: 4954736 (1990-09-01), Kawamoto et al.
patent: 5369325 (1994-11-01), Nagate et al.

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