Hybrid alternator

Details Hybrid alternator Hybrid alternator

1993-06-14

1995-03-14

Peckman, Kristine L.

Electricity: single generator systems

Generator control

Combined permanent magnet and wound field structure

310181, H02P 914

Patent

active

053979753

ABSTRACT:
A hybrid alternator includes a stator and a rotor, with the rotor having longitudinally separate wound field and permanent magnet rotor portions. A rotor excitation circuit applies a forward polarity to the wound field rotor portion to increase output in a boosting mode at low RPMs and a reverse polarity to decrease output at high RPMs in a bucking mode to maintain a constant voltage output. Alternative embodiments combine a magnetic flux concentrating design for efficient low speed operation with integral strength for high speed capability. Dual voltage output is provided either through dual stator windings or through a voltage converter circuit. Single voltage output is provided using only one stator winding.

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