Field excitation for an alternator

Details Field excitation for an alternator Field excitation for an alternator

2006-09-12

2006-09-12

Ponomarenko, Nicholas (Department: 2834)

Electricity: single generator systems

Generator control

With excitation winding and/or circuit control

C322S028000, C363S089000

Reexamination Certificate

active

07106030

ABSTRACT:
A system for controlling the excitation of an alternator field coil. The system comprises a capacitor forming a charge reservoir, a first and a second selectively operable switch connected to opposing ends of a field coil of the alternator, a first catch diode, and a second catch diode. At least one of the first and second switches are operated at a variable duty cycle and the capacitor both absorbs energy from the field coil and supplies energy to the field coil to regulate the magnetic field of the field coil, effective to regulate the output voltage of the alternator and rapidly compensate for changes in at least one load connected to the alternator.

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