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Virtual Inertia Implemented by Quasi-Z-Source Power Converter for Distributed Power System

Author

Listed:
  • Yitao Liu

    (College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China)

  • Hongle Chen

    (College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China)

  • Runqiu Fang

    (College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China)

Abstract

This paper proposes a novel virtual inertia control strategy for distributed power systems with high penetration of renewable energy sources. The strategy uses a quasi-Z-source power converter to emulate the inertia response of a synchronous generator by regulating the DC-link capacitor voltage in proportion to the grid frequency deviation. This paper analyzes the effect of inertia on the frequency regulation of a single-area power system and derives the parameter design method and limitations of the virtual inertia. The paper also introduces the working principle and modulation technique of the quasi-Z-source power converter and presents the virtual inertia control scheme based on a voltage-frequency controller. The paper verifies the feasibility and effectiveness of the proposed strategy through MATLAB/Simulink simulations and dSPACE semi-physical experiments. The results show that the proposed strategy can reduce the frequency deviation and rate of change of frequency (RoCoF) by 20% and 50%, respectively, under load disturbances. The paper demonstrates that the quasi-Z-source power converter can provide flexible and adjustable virtual inertia for distributed power systems without additional energy storage devices.

Suggested Citation

  • Yitao Liu & Hongle Chen & Runqiu Fang, 2023. "Virtual Inertia Implemented by Quasi-Z-Source Power Converter for Distributed Power System," Energies, MDPI, vol. 16(18), pages 1-18, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:18:p:6667-:d:1241773
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    References listed on IDEAS

    as
    1. Myada Shadoul & Razzaqul Ahshan & Rashid S. AlAbri & Abdullah Al-Badi & Mohammed Albadi & Mohsin Jamil, 2022. "A Comprehensive Review on a Virtual-Synchronous Generator: Topologies, Control Orders and Techniques, Energy Storages, and Applications," Energies, MDPI, vol. 15(22), pages 1-27, November.
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    Cited by:

    1. Md Asaduzzaman Shobug & Nafis Ahmed Chowdhury & Md Alamgir Hossain & Mohammad J. Sanjari & Junwei Lu & Fuwen Yang, 2024. "Virtual Inertia Control for Power Electronics-Integrated Power Systems: Challenges and Prospects," Energies, MDPI, vol. 17(11), pages 1-33, June.

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