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A Grid-Connected Inverter with Grid-Voltage-Weighted Feedforward Control Based on the Quasi-Proportional Resonance Controller for Suppressing Grid Voltage Disturbances

Author

Listed:
  • Wang Zhe

    (School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Nibong Tebal 14300, Penang, Malaysia
    School of Automotive Engineering, Changchun Technical University of Automobile, Changchun 130051, China)

  • Dahaman Ishak

    (School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Nibong Tebal 14300, Penang, Malaysia)

  • Muhammad Najwan Hamidi

    (School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Nibong Tebal 14300, Penang, Malaysia)

Abstract

A grid-connected inverter (GCI) with LCL filters is widely used in photovoltaic grid-connected systems. While introducing active damping methods can improve the quality of grid-connected current (GCC), the influence of grid voltage disturbances can still significantly impact the quality of GCC, leading to stability degradation, especially in weak grid conditions. This paper proposes a grid-voltage-weighted feedforward control scheme based on the quasi-proportional resonance (QPR) controller. This scheme introduces compensatory terms with different proportional coefficients in the voltage feedforward, controlled by the QPR controller. Through a series of analyses, reasonable inverter parameters are first designed. Then, the proposed system model is built in Matlab Simulink. Through simulation experiments and comparisons with various types of operating conditions, the effectiveness of the proposed system scheme is validated. It minimizes the impact of grid voltage disturbances, suppresses the influence of grid harmonics on the control system, improves current quality, and enhances the stability of the GCI system.

Suggested Citation

  • Wang Zhe & Dahaman Ishak & Muhammad Najwan Hamidi, 2024. "A Grid-Connected Inverter with Grid-Voltage-Weighted Feedforward Control Based on the Quasi-Proportional Resonance Controller for Suppressing Grid Voltage Disturbances," Energies, MDPI, vol. 17(4), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:4:p:885-:d:1338838
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    References listed on IDEAS

    as
    1. Diuary Gonçalves & João Victor Matos Farias & Heverton Augusto Pereira & Alex-Sander Amável Luiz & Marcelo Martins Stopa & Allan Fagner Cupertino, 2022. "Design of Damping Strategies for LC Filter Applied in Medium Voltage Variable Speed Drive," Energies, MDPI, vol. 15(15), pages 1-18, August.
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