Drive circuit for multi-phase brushless DC motor including drive

Details Drive circuit for multi-phase brushless DC motor including drive Drive circuit for multi-phase brushless DC motor including drive

1991-07-31

1993-02-23

Wysocki, A. Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

388806, 318257, H02P 500

Patent

active

051893495

ABSTRACT:
According to this invention, there is provided a drive circuit for a multi-phase brushless DC motor comprising a rotational position detector for detecting a rotational position of a rotor of the motor, a commutation control device for selecting a drive coil to be conducted from the plurality of drive coils, a drive output circuit for supplying a drive current to the drive coil selected by the commutation control devices, a DC servo control loop for detecting a motor speed on the basis of a counter electromotive voltage by rotating the motor and by supplying the drive current from the drive output circuit to the motor, and generating a comparison output in accordance with a difference between the motor speed detection output level and the reference voltage to output the comparison output to the drive output circuit through the commutation control device, and a control device for detecting whether the drive current of the drive output circuit is a predetermined value or more and for weakening a control force of the DC servo control loop when the drive current is the predetermined value or more.

REFERENCES:
patent: 4642537 (1987-02-01), Young
patent: 4654566 (1987-03-01), Erdman
patent: 4743815 (1988-05-01), Gee et al.
patent: 4928043 (1990-05-01), Plunkett
patent: 4942344 (1990-07-01), Devitt et al.

Affiliated with

Also associated with

Rating

Drive circuit for multi-phase brushless DC motor including drive does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drive circuit for multi-phase brushless DC motor including drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive circuit for multi-phase brushless DC motor including drive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2208099