Direct current dynamo

Details Direct current dynamo Direct current dynamo

1990-07-09

1992-08-25

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310184, 310198, 310141, H02K 122

Patent

active

051421810

ABSTRACT:
The subject dynamoelectric machine comprises an armature between two field assemblies. The armature may rotate between the field assemblies or vice versa. The armature has three two-coil windings with the coils of each winding located diametrically opposite each other on the armature and wound in opposite directions. Each field assembly comprises a field ring, winding cores (or permanent magnets) and pole faces which span essentially 180.degree., there being a north face and a south face for each field assembly. The field assemblies are positioned with like faces facing each other. The commutation apparatus energizes each armature winding just as it is positioned completely between the field pole faces and de-energizes it just before it starts to move out from between the faces because of the relative motion between the armature and field assemblies. The machine concept is adaptable to pancake and cylindrical configuration. The opposite direction winding of the armature coils virtually eliminates armature inductance and reaction effects. The machine also adapts to brushless commutation techniques.

REFERENCES:
patent: 3214717 (1965-10-01), Brodersen
patent: 3432707 (1969-03-01), Peters et al.
patent: 4132914 (1979-01-01), Khutoretsky et al.
patent: 4716329 (1987-12-01), Oh
patent: 4808955 (1989-02-01), Godkin et al.
patent: 4910626 (1990-03-01), Collet et al.

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