Prime-mover dynamo plants – Electric control – Fluid-current motors
Reexamination Certificate
2008-05-07
2009-08-04
Ponomarenko, Nicholas (Department: 2834)
Prime-mover dynamo plants
Electric control
Fluid-current motors
C290S055000, C290S007000, C322S025000, C322S027000, C322S028000, C322S037000
Reexamination Certificate
active
07569944
ABSTRACT:
A wind power generation system wherein procedure for controlling the blade pitch is changed in accordance with the rate of decrease in the amplitude of the grid voltage, and when over current occurs in the grid-side power converter, the grid-side power converter is brought into the gate-blocked condition whereas the generator-side power converter continues its operation.
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U.S. Appl. No 11/769,753, filed Jun. 28, 2007, Masaya Ichinose, et al.
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Futami Motoo
Ichinose Masaya
Oohara Shinya
Sodeyama Tadashi
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Mohandesi Iraj A
Ponomarenko Nicholas
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