Flicker mitigation by active power control of variable-speed wind turbines with full-scale back-to-back power converters / Weihao Hu in IEEE transactions on energy conversion, Vol. 24 N° 3 (Septembre 2009)  

Public ISBD [article]  inIEEE transactions on energy conversion > Vol. 24 N° 3 (Septembre 2009) . - pp. 640 - 649 Titre : Flicker mitigation by active power control of variable-speed wind turbines with full-scale back-to-back power converters Type de document : texte imprimé Auteurs : Weihao Hu, Auteur ; Zhe, Chen, Auteur ; Yue Wang, Auteur Année de publication : 2010 Article en page(s) : pp. 640 - 649 Note générale : Energy Conversion Langues : Anglais (eng) Mots-clés : Power convertors--Power system CAD--Reactive power control--Wind turbines Résumé : Grid-connected wind turbines are fluctuating power sources that may produce flicker during continuous operation. This paper presents a simulation model of a megawatt-level variable-speed wind turbine with a full-scale back-to-back power converter developed in the simulation tool of PSCAD/EMTDC. Flicker emission of this system is investigated. Reactive power compensation is mostly adopted for flicker mitigation. However, the flicker mitigation technique shows its limits, when the grid impedance angle is low in some distribution networks. A new method of flicker mitigation by controlling active power is proposed. It smoothes the 3p active power oscillations from wind shear and tower shadow effects of the wind turbine by varying the dc-link voltage of the full-scale converter. Simulation results show that damping the 3p active power oscillation by using the flicker mitigation controller is an effective means for flicker mitigation of variable-speed wind turbines with full-scale back-to-back power converters during continuous operation. Note de contenu : Bibiogr. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5071239&sortType%3Das [...] [article] Flicker mitigation by active power control of variable-speed wind turbines with full-scale back-to-back power converters [texte imprimé] / Weihao Hu, Auteur ; Zhe, Chen, Auteur ; Yue Wang, Auteur . - 2010 . - pp. 640 - 649. Energy Conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 24 N° 3 (Septembre 2009) . - pp. 640 - 649 Mots-clés : Power convertors--Power system CAD--Reactive power control--Wind turbines Résumé : Grid-connected wind turbines are fluctuating power sources that may produce flicker during continuous operation. This paper presents a simulation model of a megawatt-level variable-speed wind turbine with a full-scale back-to-back power converter developed in the simulation tool of PSCAD/EMTDC. Flicker emission of this system is investigated. Reactive power compensation is mostly adopted for flicker mitigation. However, the flicker mitigation technique shows its limits, when the grid impedance angle is low in some distribution networks. A new method of flicker mitigation by controlling active power is proposed. It smoothes the 3p active power oscillations from wind shear and tower shadow effects of the wind turbine by varying the dc-link voltage of the full-scale converter. Simulation results show that damping the 3p active power oscillation by using the flicker mitigation controller is an effective means for flicker mitigation of variable-speed wind turbines with full-scale back-to-back power converters during continuous operation. Note de contenu : Bibiogr. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5071239&sortType%3Das [...]

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