Brushless D.C. electric motor

Details Brushless D.C. electric motor Brushless D.C. electric motor

1990-07-17

1992-03-17

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68B, 310156, H02K 122, H02K 1100, H02K 2112

Patent

active

050971700

ABSTRACT:
The motor is for driving viscous loads, e.g. a fan, and comprises a stator (10), a permanent magnet rotor (11), a single phase unipolar winding (13) on the stator, and a permanent magnet (29) fixed relative to the stator with its poles angularly spaced with respect to the axis of the motor. The magnet (29) is positioned so that the magnetic coupling between the magnet (29) and the permanent magnet rotor will create stable rest positions for the rotor only where the winding (13) will be energized and will develop torque when power to the motor is switched on. A Hall integrated circuit (16) is provided to detect the position of the rotor relative to the stator and to alternately energize and not energize the winding (13).

REFERENCES:
patent: 3433987 (1969-03-01), Thees
patent: 3644809 (1972-02-01), Lahde
patent: 3946259 (1976-03-01), McBride et al.
patent: 4251758 (1981-02-01), Pedersen et al.
patent: 4456858 (1984-06-01), Loven
patent: 4725752 (1988-02-01), Shiraki
patent: 4728833 (1988-03-01), Shiraki et al.
patent: 4733119 (1988-03-01), Shiraki et al.
patent: 4804873 (1989-02-01), Shiraki et al.
patent: 4894572 (1990-01-01), Shiraki

Affiliated with

Also associated with

Rating

Brushless D.C. electric motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Brushless D.C. electric motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brushless D.C. electric motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1478433