Wind power facility having activation circuit for a...

Details Wind power facility having activation circuit for a... Wind power facility having activation circuit for a...

2008-10-14

2011-10-25

Mullins, Burton (Department: 2834)

Prime-mover dynamo plants

Electric control

Fluid-current motors

Reexamination Certificate

active

08044528

ABSTRACT:
A wind power facility includes an activation circuit for a speed-limited and voltage-source-protective operation of a pitch-drive series-wound motor at generator torques. The activation circuit can comprise a pitch-drive series-wound motor, in which armature winding and exciter winding are connectable separately from one another, a load resistor RII, which is switched essentially in series to the exciter winding and parallel to the armature winding, and a voltage source, such as a battery or accumulator. A first terminal contact of the armature winding can be connected via a first power converter component to a first terminal contact of the exciter winding and a first terminal contact of the load resistor, and the first terminal contact of the armature winding can be connected via a second power converter component to a second terminal contact of the exciter winding. The first power converter component can transmit in motor operation and block in generator operation, and the second power converter component can transmits in generator operation and block in motor operation.

REFERENCES:
patent: 3876920 (1975-04-01), Meissen et al.
patent: 4186333 (1980-01-01), Kremer
patent: 4965477 (1990-10-01), Stadler et al.
patent: 1282272 (1968-11-01), None
patent: 4240972 (1994-06-01), None
patent: 102004005169 (2005-03-01), None
patent: 102004005169 (2005-11-01), None
“European Application Serial No. 08164152.4, Search Report mailed Feb. 23, 2009”, 6 pgs.

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