RESEARCH ON AN IMPROVED FAULT RIDE THROUGH CONTROL STRATEGY OF DFIG-BASED WIND TURBINE

Ling Yu

doi:10.19912/j.0254-0096.tynxb.2021-0682

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (12) : 312-319. DOI: 10.19912/j.0254-0096.tynxb.2021-0682

RESEARCH ON AN IMPROVED FAULT RIDE THROUGH CONTROL STRATEGY OF DFIG-BASED WIND TURBINE

Ling Yu

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Abstract

Based on the traditional vector control technology, an improved vector control technology is proposed to suppress the rotor over-current during the fault period of DFIG based wind turbine, so as to improve its fault ride through （FRT） capability. In this paper, starting from the analysis of traditional vector control technology, an improved vector control technology is proposed. Its main feature is to reflect the influence of stator voltage transient on rotor current, but it does not increase the complexity of control. In this paper, the mechanism that the proposed scheme can improve the FRT capability of DFIG based wind turbine is analyzed theoretically. Finally, a 2 MW doubly fed wind turbine model based on PSCAD/EMTDC is simulated. Simulation results show that the proposed scheme can effectively suppress the rotor over-current during DFIG fault and improve the FRT capability of DFIG based wind turbine.

Key words

wind power generation / transient / fault current / vector control / double fed induction generator （DFIG） / fault ride through （FRT）

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Ling Yu. RESEARCH ON AN IMPROVED FAULT RIDE THROUGH CONTROL STRATEGY OF DFIG-BASED WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2022, 43(12): 312-319 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0682

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