| Titre : | Enhanced control and operation of DFIG-based wind farms during network unbalance (2009) |
| Auteurs : | Xu, Lie, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | IEEE transactions on energy conversion (Vol. 23 n°4, Décembre 2008) |
| Article en page(s) : | pp. 1073 - 1081 |
| Note générale : | Energy conversion |
| Langues : | Anglais |
| Tags : | Asynchronous generators ; convertors ; power system control ; wind |
| Résumé : | This paper investigates the control and operation of doubly fed induction generator (DFIG)-based wind generation systems under unbalanced voltage conditions. DFIG system behaviors under unbalanced voltage are analyzed and different control targets are discussed. A new rotor current control strategy containing a main controller and an auxiliary controller is proposed. The main controller is implemented in the positive (dq)+ frame without involving positive/negative sequence decomposition, whereas the auxiliary controller is implemented in the negative (dq)- frame with negative sequence current extracted. The impact of providing unbalanced control on converter voltage rating is investigated. Simulation results using EMTDC/PSCAD are presented for a 2-MW DFIG wind generation system to validate the proposed control scheme and to demonstrate the enhanced system operation during ldquosmallrdquo steady state and ldquolargerdquo transient unbalances. |
| En ligne : | http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675801&sortType%3Dasc_p_Sequence%26filter%3DAND%28p_IS_Number%3A4675791%29 |
