Improved Control of Grid-connected DFIG-based Wind Turbine using Proportional-Resonant Regulators during Unbalanced Grid

Energies

Yassir El Karkri¹  AlexisB. Rey-Boué¹  ThomasI. Strasser²  Johannes Stöckl²  Hassan El Moussaoui³ 

[1] Department of Electronics, Computers Technology and Projects, Universidad Politecnica de Cartagena, c/Dr. Fleming, s/n, 30202 Cartagena, Murcia, Spain;Electric Energy Systems—Center for Energy, AIT Austrian Institute of Technology, Giefinggasse 2, 1210 Vienna, Austria;The Signals Systems and Components Laboratory LSSC, Faculty of Sciences and Technologies-Fez, USMBA, 30000 Fèz, Morocco;

关键词: wind energy;    dfig;    lvrt;    proportional-resonant regulators;   

DOI  :  10.3390/en12214041

来源: DOAJ

【 摘 要 】

The quality of power and current control are the greatest challenges of grid-connected wind farms during abnormal conditions. The negative- and positive-sequence components of the grid currents may be injected into a wind generation system during grid faults, which can affect the power stability and damage the wind system. The proposed work assures a low-voltage ride through capability of doubly-fed induction generator- based wind turbines under the grid voltage sag. A new technique to protect the wind system and to recompense the reactive power during failures of the utility grid according to the Spanish grid code is proposed. The control design is implemented to the power converters, and the grid current regulation is developed by using proportional-resonant regulators in a stationary two-phase (αβ) reference frame. The control performance is significantly validated by applying the real-time simulation for the rotor-side converter and the hardware in the loop simulation technique for the experiment of the generator’s grid-side converter control.

【 授权许可】

Unknown