Permanent magnet rotor type electric motor with different perman

Details Permanent magnet rotor type electric motor with different perman Permanent magnet rotor type electric motor with different perman

1998-09-24

2000-02-15

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 127, H02K 2114

Patent

active

060256672

ABSTRACT:
In an electric motor, such as a DC brushless motor or the like, having a permanent magnet in a rotor, each magnetic pole is formed of three permanent magnets, and the permanent magnets are made of at least two kinds of magnetic materials represented by ferrite magnet and rare-earth magnet. Thus, in a permanent magnet rotor type electric motor, a reluctance torque and a magnetic flux density can be selectively established, and cost is reasonable, corresponding to the quality.

REFERENCES:
patent: 4127786 (1978-11-01), Volkrodt
patent: 4358697 (1982-11-01), Liu et al.
patent: 4405873 (1983-09-01), Nondahl
patent: 4476408 (1984-10-01), Honsinger
patent: 5097166 (1992-03-01), Mikulic

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