Prime-mover dynamo plants – Electric control – Fluid-current motors
Reexamination Certificate
2008-05-29
2011-10-11
Cuevas, Pedro J (Department: 2839)
Prime-mover dynamo plants
Electric control
Fluid-current motors
C290S055000
Reexamination Certificate
active
08035240
ABSTRACT:
The disclosure details implementations of apparatuses, methods, and systems for facilitating efficient operational characteristics for wind turbine generators. The system includes features that facilitate protecting the power semiconductors used in the power converters of variable speed power generation systems from excessive junction temperatures. These features may be achieved by implementing a synchronous speed avoidance (SSA) controller implemented to facilitate a determined active control range as an electrical torque/power-generator rotor speed controller. The determined active control range may be centered around a generator synchronous speed. The upper and lower bounds of the active control range are determined based on operational junction temperature characteristics of power semiconductors used within a power converter, reliability characteristics of the power semiconductors and/or current ratings of the power semiconductors.
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Behnke Michael R.
Erdman William L.
Núñez Polo Miguel
Tonks Steve
Acciona Windpower, S.A.
Chadbourne & Parke LLP
Cuevas Pedro J
Hanchuk Walter G.
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