Patent
Method of controlling a wind turbine connected to an electric utility grid
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TLDR
In this paper, the authors proposed a method of controlling a wind turbine connected to an electric utility grid during malfunction in said electric utility system, which comprises the steps of detecting a malfunction in the grid and operating at least two control units of the power converter in relation to at least one power converter limit value.Abstract:
The invention relates to a method of controlling a wind turbine connected to an electric utility grid during malfunction in said electric utility grid (9). The method comprises the steps of detecting a malfunction in said electric utility grid and operating at least two control units of said power converter (12) in relation to at least one power converter limit value. The invention also relates to a control system for a wind turbine connected to a utility grid and a wind turbine.read more
Citations
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Patent
Wind Turbine Generator System
TL;DR: In this article, a phase difference and an amplitude difference between the grid voltage and the stator voltage of one phase of a winding are obtained to shorten a startup interval to reach a synchronizing condition, and the calculated compensation phase compensation value is used as an initial value for synchronizing at the next synchronizing operation.
Journal ArticleDOI
Feedforward Transient Compensation Control for DFIG Wind Turbines During Both Balanced and Unbalanced Grid Disturbances
TL;DR: In this article, a feedforward transient compensation (FFTC) control scheme with proportional integral-resonant current regulators is proposed to enhance the lowvoltage ride through (LVRT) capability of doubly fed induction generators (DFIGs) during both balanced and unbalanced grid faults.
Patent
Variable speed wind turbine having an exciter machine and a power converter not connected to the grid
Gregorio Rivas,Iker Garmendia,Josu Elorriaga,Jesus Mayor,Javier Perez Barbachano,David Sole,Jorge Acedo +6 more
TL;DR: In this paper, a variable speed wind turbine having a doubly fed induction generator (DFIG) includes an exciter machine (212) mechanically coupled to the DFIG and a power converter (230) placed between a rotor (211) of the DIG and the exciter machines.
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Power conditioning architecture for a wind turbine
TL;DR: In this paper, a back-to-back AC/DC/AC power electronic converter chain in which the grid side converter 48 is connected in series with DFIG stator windings 64.
Patent
Method and apparatus for controlling a wind turbine
TL;DR: In this paper, the first controller is configured to calculate an operating limit of a wind turbine based on the measured operating condition and adjust the operating limit based on a limiting condition of a component of the wind turbine.
References
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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.
Patent
Continuous reactive power support for wind turbine generators
Thomas A. Wilkins,Nagwa M. Elkachouty,Reigh A. Walling,James Patrick Lyons,Robert William Delmerico,Sumit Bose,Miller Nicholas W +6 more
TL;DR: In this article, the authors proposed a real and reactive power control for wind turbine generator systems, where the VAR support provided by individual wind turbine generators in a system can be dynamically varied to suit application parameters.
Patent
Distributed power system
Joel B. Wacknov,Everett R. Geis +1 more
TL;DR: In this article, a power generation system with a fuel source, a turbogenerator coupled to the fuel source and an AC/DC power converter is described, where the power controller regulates the fuel to the turbine, independent of a DC voltage on the output lines.
Patent
Control and protection of a doubly-fed induction generator system
TL;DR: In this paper, a control system for a double-fed induction generator (DFIG) comprising a rotor having rotor windings and a stator having stator windings connectable to a grid for electric power distribution is described.
Patent
Method for controlling a power-grid connected wind turbine generator during grid faults and apparatus for implementing said method
TL;DR: In this article, the stator windings of a wind turbine generator are disconnected from the power grid and impedances for dissipating at least part of the generated power generated by the wind turbine during grid fault condition are connected to the windings.