MODELING AND STABILITY ANALYSIS OF DOUBLY-FED WIND TURBINE FREQUENCY REGULATION CONSIDERING TIP SPEED RATIO

Zhang Kuan; Zhao Bo; Liu Lei

doi:10.19912/j.0254-0096.tynxb.2023-2067

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 434-444. DOI: 10.19912/j.0254-0096.tynxb.2023-2067

MODELING AND STABILITY ANALYSIS OF DOUBLY-FED WIND TURBINE FREQUENCY REGULATION CONSIDERING TIP SPEED RATIO

Zhang Kuan¹, Zhao Bo^1,2, Liu Lei¹

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Abstract

The influence of tip speed ratio on the frequency regulation effect of doubly-fed wind turbine under the control of virtual synchronous generator（VSG） is studied to optimize the control strategy under different working conditions. Firstly, the basic control model of the load shedding doubly-fed wind turbine system is analyzed, and the small signal model of the frequency modulation system of the doubly-fed wind turbine with the tip speed ratio variable is established by combining the VSG. Secondly, the model is used to derive the relationship equation between the equivalent inertia and the tip speed ratio of the wind turbine under small signal conditions. According to the Bode diagram and the root locus diagram of the characteristic root, the dynamic characteristics of the tip speed ratio on the frequency modulation of the VSG-controlled doubly-fed wind power system are analyzed, and the inertia response of the virtual synchronous machine control under different tip speed ratios is determined. Finally, a four-machine two-area model is built in Matlab/Simulink for time domain simulation, and the simulation results verify the correctness of the theoretical analysis.

Key words

wind power / electric machine control / virtual power plant / small signal model / tip speed ratio

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Zhang Kuan, Zhao Bo, Liu Lei. MODELING AND STABILITY ANALYSIS OF DOUBLY-FED WIND TURBINE FREQUENCY REGULATION CONSIDERING TIP SPEED RATIO[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 434-444 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2067

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