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Large-Signal Impedance Modeling and Stability Analysis of a Grid-Connected Inverter Considering the Influence of a Limiter in Different Control Links

Author

Listed:
  • Xiaodan Cui

    (State Key Laboratory of Smart Grid Protection and Control, Nari Group Corporation, Nanjing 211106, China)

  • Jialong Wu

    (State Key Laboratory of Smart Grid Protection and Control, Nari Group Corporation, Nanjing 211106, China)

  • Xiaoke Liu

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Yandong Chen

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Zhiwei Xie

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Feng Xue

    (State Key Laboratory of Smart Grid Protection and Control, Nari Group Corporation, Nanjing 211106, China)

  • Yucheng Liu

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Cong Luo

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

Abstract

The limiter in grid-connected inverter control may cause sustained oscillation in the system. The large-signal impedance model is provided since the traditional small-signal impedance model cannot accurately describe the characteristics of the limiter. In this paper, there are three established large-signal impedance models of grid-connected inverters that take into account the limiter in the phase-locked loop (PLL), the limiter in the current control loop and the limiter in the pulse width modulation (PWM). Based on the established models, the influences of these different limiters on the output impedance characteristics of the grid-connected inverter are discussed. Furthermore, the stability of the system considering the influence of different limiters is analyzed and the oscillation frequency and amplitude of the system are predicted. The simulation verifies the accuracy of the large-signal impedance model and the predicted oscillation frequency and amplitude.

Suggested Citation

  • Xiaodan Cui & Jialong Wu & Xiaoke Liu & Yandong Chen & Zhiwei Xie & Feng Xue & Yucheng Liu & Cong Luo, 2023. "Large-Signal Impedance Modeling and Stability Analysis of a Grid-Connected Inverter Considering the Influence of a Limiter in Different Control Links," Energies, MDPI, vol. 16(17), pages 1-17, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6227-:d:1226432
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    References listed on IDEAS

    as
    1. Xuli Quan & Xinchun Lin & Yun Zheng & Yong Kang, 2021. "Transient Stability Analysis of Grid-Connected Converter Driven by Imbalance Power under Non-Severe Remote Voltage Sag," Energies, MDPI, vol. 14(6), pages 1-17, March.
    2. Yunlu Li & Junyou Yang & Haixin Wang & Weichun Ge & Yiming Ma, 2018. "Leveraging Hybrid Filter for Improving Quasi-Type-1 Phase Locked Loop Targeting Fast Transient Response," Energies, MDPI, vol. 11(9), pages 1-19, September.
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