Electricity: electrical systems and devices – Safety and protection of systems and devices – Generator protective circuits
Reexamination Certificate
2007-03-20
2008-11-18
Sherry, Michael J (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Generator protective circuits
C361S085000
Reexamination Certificate
active
07453674
ABSTRACT:
A method for protecting an electrical generator which includes providing an electrical generator which is normally synchronously operated with an electrical power grid; providing a synchronizing signal from the electrical generator; establishing a reference signal; and electrically isolating the electrical generator from the electrical power grid if the synchronizing signal is not in phase with the reference signal.
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patent: 6324039 (2001-11-01), Gross, Jr.
patent: 6915186 (2005-07-01), Patterson, Jr.
patent: 7230809 (2007-06-01), Whitehead
patent: 7262520 (2007-08-01), Nguyen et al.
Folkers Ralph W.
Kuehnle Barry W.
Roberts Jeffrey B.
Battelle Energy Alliance, LLC
Clark Christopher J
Sherry Michael J
Wells St. John
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