Series electric motor with permanent magnet brake

Details Series electric motor with permanent magnet brake Series electric motor with permanent magnet brake

1991-01-31

1992-02-11

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

188162, 310 68B, 310154, H02K 7106, H02K 1310, H02K 2338

Patent

active

050878450

ABSTRACT:
A series electric motor having at least one field winding on its stator and a rotor fed through a commutator and brushes, and a device for short circuiting the rotor. Between the stator and the rotor there is at least one permanent braking magnet attached to the stator. When the short circuiting device is put into operation, the permanent magnet field to drive the braking current is strictly predetermined so that a braking effect may cause no additional or harmful sparking at the brushes. The entire braking energy is then directly converted in the motor rotor and there is no necessity for an additional electronic regulating device for the braking current.

REFERENCES:
patent: 2199601 (1940-05-01), Wallis
patent: 4056749 (1977-11-01), Carlson, Jr. et al.
patent: 4399384 (1983-08-01), Lucherini
patent: 4451752 (1984-05-01), Tahara et al.

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