Multivariable control of a grid-connected wind energy conversion system with power quality enhancement

被引:7
|
作者
Fouad, Kaddour [1 ]
Boulouiha, Houari Merabet [2 ]
Allali, Ahmed [1 ]
Taibi, Ali [3 ]
Denai, Mouloud [4 ]
机构
[1] Univ Sci & Technol Oran, Dept Electrotech, Lab Sustainable Dev Elect Energy LDDEE, Oran, Algeria
[2] Univ Relizane, Relizane, Algeria
[3] IUT Tremblay En France, Dept Ind Engn & Maintenance, Paris 8, France
[4] Univ Hertfordshire, Sch Engn & Technol, Hatfield AL10 9AB, Herts, England
关键词
Wind energy; Squirrel cage induction generator; Direct torque control; Space vector PWM; MPPT; H-infinity control; Multilevel inverter;
D O I
10.1007/s12667-016-0223-7
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper proposes the design of a multivariable robust control strategy for a variable-speed WECS based on a SCIG. Optimal speed control of the SCIG is achieved by a conventional PI controller combined with a MPPT strategy. DTC-SVM technique based on a simple Clarke transformation is used to control the generator-side three-level converter in the variable speed WECS. The flow of real and reactive power between the inverter and the grid is controlled via the grid real and reactive currents and the DC link voltage using multivariable Hcontrol. The overall WECS and control scheme are developed in Matlab/Simulink and the performance of the proposed control strategy is evaluated via a set of simulation scenarios replicating various operating conditions of the WECS such as variable wind speed and asymmetric single grid faults. The power quality of the WECS system under Hcontrol control approach is assessed and the results show a significant improvement in the total harmonic distorsion as compared to that achieved with a classical PI control.
引用
收藏
页码:25 / 57
页数:33
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