Soft-commutated direct current motor

Details Soft-commutated direct current motor Soft-commutated direct current motor

1998-06-19

1999-07-27

Shoop, Jr., William M.

Electricity: motive power systems

Limitation of motor load, current, torque or force

318541, 318542, 310219, 310220, H10R 3946

Patent

active

059295791

ABSTRACT:
A method and circuit is disclosed for soft-commutation of a direct current (DC) motor. An attenuation circuit is connected through auxiliary brushes A, A', B and B' to the commutator (16) to drain circuit from successive armature coils (15) before the main brushes (27, 28) disconnects from each of the coils (15). This prevents the spark generation that normally occurs in conventional DC motors. The attenuation circuit may also be connected before energization of the coil (15) for a soft turning on operation.

REFERENCES:
patent: 3497788 (1970-02-01), Kerrigan et al.
patent: 3733506 (1973-05-01), Jaffe et al.
patent: 4270065 (1981-05-01), Major
patent: 4425536 (1984-01-01), Larsen
patent: 4479079 (1984-10-01), Hanner
patent: 4760318 (1988-07-01), Jones
patent: 4831295 (1989-05-01), Posedel

Affiliated with

Also associated with

Rating

Soft-commutated direct current 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 Soft-commutated direct current motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft-commutated direct current motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-882518