Brushless DC motor with a two-layered permanent magnet rotor str

Details Brushless DC motor with a two-layered permanent magnet rotor str Brushless DC motor with a two-layered permanent magnet rotor str

1999-04-05

2000-06-06

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

29598, H02K 2112

Patent

active

060722568

ABSTRACT:
A brushless DC motor having external and internal permanent magnets buried in rotor core in a two-tier structure to form the poles of the rotor, thereby improving efficiency of the motor and reducing vibration and noise, as well.

REFERENCES:
patent: 4139790 (1979-02-01), Steen
patent: 4211963 (1980-07-01), Muller
patent: 4327302 (1982-04-01), Hershberger
patent: 4510680 (1985-04-01), Miller et al.
patent: 4551645 (1985-11-01), Takahashi et al.
patent: 5191256 (1993-03-01), Reiter, Jr. et al.
patent: 5296773 (1994-03-01), El-Antably et al.
patent: 5369325 (1994-11-01), Nagate et al.
patent: 5510662 (1996-04-01), Tanimoto et al.
patent: 5679995 (1997-10-01), Nagate et al.

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