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LQG design for megawatt-class WECS with DFIG based on functional models' fidelity prerequisites / Muhando, Endusa Billy in IEEE transactions on energy conversion, Vol. 24 N° 4 (Décembre 2009) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 24 N° 4 (Décembre 2009) . - pp. 893 - 904 Titre : LQG design for megawatt-class WECS with DFIG based on functional models' fidelity prerequisites Type de document : texte imprimé Auteurs : Muhando, Endusa Billy, Auteur ; Senjyu, Tomonobu, Auteur ; Uehara, Aki, Auteur Année de publication : 2010 Article en page(s) : pp. 893 - 904 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Asynchronous  generators;  control  system  synthesis;  direct  energy  conversion;  electric  current  control;  frequency  control;  linear  quadratic  Gaussian  control;  machine  control;  power  generation  control;  torque  control;  voltage  control;  wind  turbines Résumé : With the increasing trend of connecting high penetrations of wind energy conversion systems (WECSs) to the transmission networks comes the challenge of updating the grid code for the connection of megawatt-class wind turbines. Starting with each WECS entity in the wind farm, the specifications would require the ability to complement some of the power system control services-voltage and frequency control-currently carried out by conventional synchronous generation. This paper investigates output power stability of a WECS in a highly fluctuating wind environment. Based on a performability model, a control strategy is devised for maximizing energy conversion in low to medium winds, and maintaining rated output in above rated winds while keeping torsional torque fluctuations to a minimum. Control is exercised via collective blade pitch control as well as generator torque control. The fundamental philosophy behind the proposed control strategy for the wind turbine coupled to an asynchronous doubly fed induction generator is general and can be easily extended to other WECS configurations. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5291769&sortType%3Das [...] [article] LQG design for megawatt-class WECS with DFIG based on functional models' fidelity prerequisites [texte imprimé] / Muhando, Endusa Billy, Auteur ; Senjyu, Tomonobu, Auteur ; Uehara, Aki, Auteur . - 2010 . - pp. 893 - 904. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 24 N° 4 (Décembre 2009) . - pp. 893 - 904 Mots-clés : Asynchronous  generators;  control  system  synthesis;  direct  energy  conversion;  electric  current  control;  frequency  control;  linear  quadratic  Gaussian  control;  machine  control;  power  generation  control;  torque  control;  voltage  control;  wind  turbines Résumé : With the increasing trend of connecting high penetrations of wind energy conversion systems (WECSs) to the transmission networks comes the challenge of updating the grid code for the connection of megawatt-class wind turbines. Starting with each WECS entity in the wind farm, the specifications would require the ability to complement some of the power system control services-voltage and frequency control-currently carried out by conventional synchronous generation. This paper investigates output power stability of a WECS in a highly fluctuating wind environment. Based on a performability model, a control strategy is devised for maximizing energy conversion in low to medium winds, and maintaining rated output in above rated winds while keeping torsional torque fluctuations to a minimum. Control is exercised via collective blade pitch control as well as generator torque control. The fundamental philosophy behind the proposed control strategy for the wind turbine coupled to an asynchronous doubly fed induction generator is general and can be easily extended to other WECS configurations. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5291769&sortType%3Das [...]