Double-sided, non-iron core, brushless, axial magnetic field per

Details Double-sided, non-iron core, brushless, axial magnetic field per Double-sided, non-iron core, brushless, axial magnetic field per

1998-10-20

2000-01-04

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 74, 310103, 310157, 310 67A, 310 67R, 310268, 310158, 310178, 310179, 310191, H02K 2112

Patent

active

060113375

ABSTRACT:
A double-sided, non-iron core, brushless, axial magnetic field permanent-magnet type DC motor includes a shaft, two electromagnet units parallelly mounted on the shaft, and a permanent magnet unit mounted on the shaft between the electromagnet units and having its direction of magnetization disposed in parallel to the shaft. The permanent magnet unit is allowed to rotate relatively around the electromagnet units by being forced by magnetic repulsion force from both sides. Electromagnetic areas at the electromagnet units are arranged in a staggered manner, enabling permanent steel magnets at the permanent magnet unit to be alternatively fully induced from its two opposite sides to provide a high torsion output. The electromagnetic areas of the two electromagnet units are caused to change the phase alternatively at a 90.degree. phase difference, so that vibration and dead section problems are eliminated during the operation of the DC motor.

REFERENCES:
patent: 4394594 (1983-07-01), Schmider et al.
patent: 4922145 (1990-05-01), Shtipelman
patent: 4959578 (1990-09-01), Varga
patent: 5334898 (1994-08-01), Skybyk
patent: 5334899 (1994-08-01), Skybyk
patent: 5396140 (1995-03-01), Goldie et al.
patent: 5646467 (1997-07-01), Floresta et al.
patent: 5793137 (1998-08-01), Smith

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