Brushless D.C. motor

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

1980-05-15

1982-12-21

Smith, Jr., David

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02K 2900

Patent

active

043651879

ABSTRACT:
A D.C. brushless motor with a permanent magnet rotor employs Hall switches to effect commutation. The rotor magnets are of a greater axial length than the stator stack and the Hall switches are mounted on a printed circuit panel within the motor frame so as to be actuated by the fringe flux from the portion of a rotor magnet extending beyond the stator stack. The pole faces of the stator stack are stepped to assure proper starting and direction of rotation. A voltage regulating circuit forming part of the commutating arrangement on the printed circuit panel enables the same circuit to be used for a range of stator energizing voltages.

REFERENCES:
patent: 3230434 (1966-01-01), Bauerlein
patent: 3604960 (1971-09-01), Kerstel
patent: 3652909 (1972-03-01), Rainer et al.
patent: 3805134 (1974-04-01), Osamu et al.
patent: 3909690 (1975-09-01), Sugiura
patent: 3988652 (1976-10-01), Endo et al.
patent: 4086519 (1978-04-01), Persson
patent: 4115715 (1978-09-01), Muller
patent: 4136168 (1979-05-01), Vogel
patent: 4217508 (1980-08-01), Uzuka
patent: 4230976 (1980-10-01), Muller
Gottleib, I. M., Regulated Power Supplies, Howard W. Sams and Co., Indianapolis, Ind., pp. 129-131.
Interim Bulletin, UGN-3013T, Sprague, Oct. 2, 1975.
"Hall Effect Devices and their Applications", Electronics Industry, May 1979, pp. 21-27.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-408091