AC generator with independently controlled field rotational speed
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United States of America Patent
Stats
-
N/A
Issued Date -
Apr 27, 2006
app pub date -
Apr 20, 2005
filing date -
Oct 26, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A generator system is configured to supply relatively constant frequency AC power when driven by a variable speed prime mover, by independently controlling the main rotor flux rotational speed. The generator system includes an exciter stator that induces current in the exciter rotor windings at a desired frequency and phasing. The exciter rotor windings are electrically connected to the main rotor windings, and are thus electrically excited at the same frequency and phasing. Excitation is supplied to the exciter stator from an exciter controller, which controls the frequency and phasing of the exciter excitation, based on the rotational speed of the generator, to maintain a constant output frequency.
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