Improving LVRT Capability of a Wind Turbine During a Voltage Sag in the Electrical Network

TitreImproving LVRT Capability of a Wind Turbine During a Voltage Sag in the Electrical Network
Publication TypeJournal Article
Year of Publication2022
AuthorsMensou, S, Mekrini, Z, Essadki, A, Nasser, T, Idrissi, BB
JournalStudies in Systems, Decision and Control

The wind turbine (WT) based on a Doubly Fed Induction Generator (DFIG) has experienced a fast evolution in the world, which leads to an increasing insertion of this type of generators in WTs connected to the electrical networks. When a voltage dips appears on the grid, the aero-generator can lose its operation, the voltage drop produces high peaks currents on the generator winding, without protection, the power converters will suffer also from over-current limit, as a consequence, it may be damaged and the DFIG be destroyed. In this chapter a new Direct Power Control (DPC) approach was applied, to improve the aero-generator operation under the network faults. The DPC approach was designed using the nonlinear Back-Stepping Controller (BSC) to ensure the robustness of the system. A comparison study was investigated to verify the performances of the DPC-based-BSC to that of the vector control (VC) based Proportional-Integral (PI). All were simulated using the Matlab/Simulink® environment. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.




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