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Virtual Synchronous Generator (VSG) Control Strategy Based on Improved Damping and Angular Frequency Deviation Feedforward

Author

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  • Sue Wang

    (School of Electrical and Control Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China)

  • Yuxin Xie

    (School of Electrical and Control Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China)

Abstract

The output active power of a grid-connected inverter controlled by a traditional virtual synchronous generator (VSG) has the problems of oscillation and steady-state errors. A VSG control strategy based on improved damping and angular frequency deviation feedforward is proposed. This strategy reduces the steady-state error of active power by adding a transient damping link to a traditional VSG damping feedback channel. At the same time, the angular frequency deviation feedforward compensation is used to improve the response speed of the VSG to the active power instruction and reduce the active power overshoot in the dynamic process. First, the VSG active power closed-loop small-signal model is established. The effects of inertia and damping on the dynamic and steady-state performance of the VSG are analyzed by the root locus method. The effect of the proposed control strategy on the system is analyzed by using a closed-loop zero-pole diagram. This strategy improves the precision of active power control the dynamic performance of the system effectively. Finally, the effectiveness and superiority of the proposed control strategy are verified by Matlab/Simulink simulation and semi-physical simulation platform RT-LAB.

Suggested Citation

  • Sue Wang & Yuxin Xie, 2023. "Virtual Synchronous Generator (VSG) Control Strategy Based on Improved Damping and Angular Frequency Deviation Feedforward," Energies, MDPI, vol. 16(15), pages 1-14, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5635-:d:1203326
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    References listed on IDEAS

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    1. Ning Ma & Huaixian Yin & Kai Wang, 2023. "Prediction of the Remaining Useful Life of Supercapacitors at Different Temperatures Based on Improved Long Short-Term Memory," Energies, MDPI, vol. 16(14), pages 1-14, July.
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    Cited by:

    1. Wenwen He & Jun Yao & Hao Xu & Qinmin Zhong & Ruilin Xu & Yuming Liu & Xiaoju Li, 2024. "Transient Synchronous Stability Analysis of Grid-Forming Photovoltaic Grid-Connected Inverters during Asymmetrical Grid Faults," Energies, MDPI, vol. 17(6), pages 1-19, March.

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