Parameter design of a two-current-loop controller used in a grid-connected inverter system with LCL filter / Fei Liu in IEEE transactions on industrial electronics, Vol. 56 N° 11 (Novembre 2009)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 56 N° 11 (Novembre 2009) . - pp. 4483 - 4491 Titre : Parameter design of a two-current-loop controller used in a grid-connected inverter system with LCL filter Type de document : texte imprimé Auteurs : Fei Liu, Auteur ; Zhou, Yan, Auteur ; Duan, Shanxu, Auteur Article en page(s) : pp. 4483 - 4491 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Grid connected LCL filter Renewable energy generation Two-current-loop controller Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : LCL filters offer a better choice of attenuating switching frequency harmonics. However, in a grid-connected system, an LCL filter may cause resonance which is a disaster for the system's stability. In order to solve the problem, a two-current-loop control strategy, which includes grid-current outer loop and filter-capacitor-current inner loop, is adopted here. The implementation of this strategy is easy, but the tuning procedure is complex since the outer and inner controllers cannot cooperate well if the parameters of the controllers are not suitable. There is no literature which mentions a method to help give out accurate parameters of the controller. The difficulty of designing the controller is that only two feedbacks cannot provide complete information of a three-order LCL filter. A specific method is proposed in this paper to design the controller. The advantage of this method is to provide a way to maximize the utilization of the two feedbacks to get good system performance through parameter determination. The practicability of the method is tested by using bode diagram, and the antidistortion ability of the system is analyzed. Finally, experimental results verify the availability and correctness of the proposed method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4909027 [article] Parameter design of a two-current-loop controller used in a grid-connected inverter system with LCL filter [texte imprimé] / Fei Liu, Auteur ; Zhou, Yan, Auteur ; Duan, Shanxu, Auteur . - pp. 4483 - 4491. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N° 11 (Novembre 2009) . - pp. 4483 - 4491 Mots-clés : Grid connected LCL filter Renewable energy generation Two-current-loop controller Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : LCL filters offer a better choice of attenuating switching frequency harmonics. However, in a grid-connected system, an LCL filter may cause resonance which is a disaster for the system's stability. In order to solve the problem, a two-current-loop control strategy, which includes grid-current outer loop and filter-capacitor-current inner loop, is adopted here. The implementation of this strategy is easy, but the tuning procedure is complex since the outer and inner controllers cannot cooperate well if the parameters of the controllers are not suitable. There is no literature which mentions a method to help give out accurate parameters of the controller. The difficulty of designing the controller is that only two feedbacks cannot provide complete information of a three-order LCL filter. A specific method is proposed in this paper to design the controller. The advantage of this method is to provide a way to maximize the utilization of the two feedbacks to get good system performance through parameter determination. The practicability of the method is tested by using bode diagram, and the antidistortion ability of the system is analyzed. Finally, experimental results verify the availability and correctness of the proposed method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4909027

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