Electricity: single generator systems – Generator control – Combined permanent magnet and wound field structure
Patent
1995-06-02
1997-05-20
Stephan, Steven L.
Electricity: single generator systems
Generator control
Combined permanent magnet and wound field structure
322 49, 322 89, H02P 914
Patent
active
056315449
ABSTRACT:
A hybrid alternator includes a stator winding and a rotor winding. The stator winding includes a neutral point having a neutral point voltage and is preferably arranged as a three phase winding with the neutral point being located at the center junction of three stator winding portions arranged in a "Y" configuration. The rotor winding is mounted on a rotor which also includes permanent magnets. The rotor winding has a first end connected to the neutral point on the stator winding and a second end connected to a switching circuit. The rotor winding produces a magnetic flux field that additively combines with the permanent magnetic flux field from the permanent magnets when the switching circuit connects the second end of the rotor winding to a voltage greater than the neutral point voltage and produces a magnetic flux field that subtractively combines with the permanent magnetic flux field when the switching circuit connects the second end to a voltage less than the neutral point voltage.
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Curtiss William P.
Syverson Charles D.
Ecoair Corp.
Ponomarenko Nicholas
Stephan Steven L.
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