Multiple windings electrical motors controllers

Details Multiple windings electrical motors controllers Multiple windings electrical motors controllers

1986-03-20

1991-12-31

Weldon, Ulysses

Electricity: motive power systems

Limitation of motor load, current, torque or force

318542, H01R 3946

Patent

active

050775090

ABSTRACT:
A circuit for recovering electromagnetic energy from multiple windings electrical motor open circuit armature windings when interrupted while contacted through coupled commutator segments by brushes of the two groups. This energy recovery circuit includes, for one group brush, a half bridge circuit composed of a plurality of diodes coupled between the group brush and positive and negative polarity terminals of a DC electrical energy coupling means, and two or more group brushes are so connected. The diodes are arranged to be back-biased until an open circuit armature winding is interrupted as above and thereby induces voltage which forward-biased until an open circuit armature winding is interrupted as above and thereby induces voltage which forward-biases certain diodes of the half bridge circuits coupled to commutator segments coupled to the ends of the interrupted open circuit armature winding, and thereby electromagnetic energy associated with the interrupted open circuit armature winding is recovered as electrical energy and delivered with respective polarity to the electrical terminals.

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patent: 4186333 (1980-01-01), Kremer
patent: 4305027 (1981-12-01), Wilson

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