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Inverter Multi-Machine Grid Integration Resonance Suppression Strategy by Active Damping

Author

Listed:
  • Tianhao Hou

    (Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China)

  • Yunhao Jiang

    (Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China)

  • Zishuo Cai

    (Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China)

Abstract

The current inverter control strategies have limitations in suppressing grid resonance, especially in complex grid environments with high penetration of renewable energy sources. These strate-gies often focus on suppressing resonance at a single frequency point, but their effectiveness is constrained when dealing with multi-band resonance or dynamically changing grid conditions. The study investigates the application of parallel-operated inverters in the grid, particularly their impact on grid stability. A novel active damping strategy is developed to enhance the grid’s dynamic response and suppress grid resonance. The effectiveness of the control strategy is verified through simulation by establishing Norton equivalent circuit models for multiple in-verters. Fast Through simulation, this study comprehensively evaluates the performance and adaptability of the strategy under various conditions. Results demonstrate that implementing the active damping strategy increases the inverter output power from 9.5 kW to 10 kW, an im-provement of 5.26%. System response time is reduced from 50 ms to 30 ms, and post-stabilization fluctuations decrease to 1.5%. These data conclusively prove the effectiveness of the control strategy in enhancing grid stability and reducing resonance effects. The findings underscore the potential of active damping strategies in improving grid performance and in-verter efficiency. However, further research and optimization are necessary to assess the adapt-ability of these strategies under different grid conditions.

Suggested Citation

  • Tianhao Hou & Yunhao Jiang & Zishuo Cai, 2024. "Inverter Multi-Machine Grid Integration Resonance Suppression Strategy by Active Damping," Energies, MDPI, vol. 17(15), pages 1-12, August.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:15:p:3791-:d:1447960
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    References listed on IDEAS

    as
    1. Xiaoyi Xu & Wenxi Yao & Gang Xie, 2023. "A Damping Control Strategy to Improve the Stability of Multi-Parallel Grid-Connected PCSs," Energies, MDPI, vol. 16(12), pages 1-17, June.
    2. Tanzim Meraj, Sheikh & Zaihar Yahaya, Nor & Hasan, Kamrul & Hossain Lipu, M.S. & Madurai Elavarasan, Rajvikram & Hussain, Aini & Hannan, M.A. & Muttaqi, Kashem M., 2022. "A filter less improved control scheme for active/reactive energy management in fuel cell integrated grid system with harmonic reduction ability," Applied Energy, Elsevier, vol. 312(C).
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