Patent
Variable Speed Synchronous Generator
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TLDR
In this paper, an input shaft is connected to a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the first rotor to rotate, and the interaction of the first and second rotor may be varied electrically to vary the torque and in turn the rotation rate of the second rotor.Abstract:
An input shaft rotates at variable rotation rates and is driven by a variable speed source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically to vary the torque and in turn the rotation rate of the second rotor. The second rotor interacts with a stator to produce AC electrical power. The rotation rate of the second rotor is controlled so that the generator supplies AC power at an essentially constant frequency.read more
Citations
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References
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Patent
Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operation
TL;DR: In this paper, a wind turbine power converter is described that smooths the output power from a variable speed wind turbine, to reduce or eliminate substantial power fluctuations on the output line.
Patent
Variable speed wind turbine
TL;DR: A variable speed wind turbine having a generator controller coupled to a power converter with active switches operable for controlling stator electrical quantities for a multiphase generator of the turbine to enable control of the torque in the wind turbine as mentioned in this paper.
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Variable speed wind turbine having a matrix converter
TL;DR: In this article, a variable speed wind turbine is disclosed comprising a turbine rotor that drives a doubly-fed induction generator, a matrix converter which converts variable frequency output into constant frequency output, and a control unit and a protection circuit for the matrix converter.
Patent
Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control
TL;DR: In this paper, a variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed, and the variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator.
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Wind powered system for generating electricity
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