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Kaman 40 kW wind turbine generator - control system dynamicsThe generator design incorporates an induction generator for application where a utility line is present and a synchronous generator for standalone applications. A combination of feed forward and feedback control is used to achieve synchronous speed prior to connecting the generator to the load, and to control the power level once the generator is connected. The dynamics of the drive train affect several aspects of the system operation. These were analyzed to arrive at the required shaft stiffness. The rotor parameters that affect the stability of the feedback control loop vary considerably over the wind speed range encountered. Therefore, the controller gain was made a function of wind speed in order to maintain consistent operation over the whole wind speed range. The velocity requirement for the pitch control mechanism is related to the nature of the wind gusts to be encountered, the dynamics of the system, and the acceptable power fluctuations and generator dropout rate. A model was developed that allows the probable dropout rate to be determined from a statistical model of wind gusts and the various system parameters, including the acceptable power fluctuation.
Document ID
19820015845
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Perley, R.
(Kaman Aerospace Corp. Bloomfield, CT, United States)
Date Acquired
August 10, 2013
Publication Date
May 1, 1981
Publication Information
Publication: NASA. Lewis Research Center Wind Turbine Dyn.
Subject Category
Energy Production And Conversion
Accession Number
82N23721
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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