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Title:
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DC-link voltage oscilations reduction during unbalanced grid faults for high power wind turbines
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Author:
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Miranda, Hernan; Teodorescu, Remus; Rodríguez Cortés, Pedro; Helle, L.
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica |
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Abstract:
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During unbalanced grid voltage faults the Power injected to the grid experiences 100Hz oscillationsas a result of interactions between positive and negative sequence components of three-phase voltagesand currents. These oscillations can become as high as %50 percent of the rated power. In this articlean improved controller is proposed which present different behavior during normal operation and faultsto keep track of non-sinusoidal current reference signals. The reference signals are calculated to obtainzero power oscillations. Reconfigurable resonant controllers are used for this purpose applied to 3-levelNeutral-point-clamped converter in the megawatt range. |
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Publication date:
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2012-05-10 |
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Subject(s):
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Àrees temàtiques de la UPC::Energies::Energia elèctrica::Automatització i control de l'energia elèctrica
Àrees temàtiques de la UPC::Energies::Energia eòlica::Aerogeneradors
Electric power system stability
Wind turbines
Xarxes elèctriques -- Estabilitat
Aerogeneradors |
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Rights:
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Restricted access - publisher's policy |
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Document type:
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Conference Object |
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