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Nonlinear Self-Synchronizing Current Control for Single-Phase AC Inverters

Author

Listed:
  • Shruti Pandey

    (Electrical and Computer Engineering, University of Louisville, Louisville, KY 40292, USA)

  • Michael Mclntyre

    (Electrical and Computer Engineering, University of Louisville, Louisville, KY 40292, USA)

Abstract

Grid-connected single-phase inverters require accurate phase detection for synchronization and power control. Traditionally, phase-locked loops (PLLs) are used to estimate grid parameters. This paper proposes a novel approach that determines the grid phase angle using only current feedback, eliminating the need for grid voltage measurements or cascaded control schemes. The proposed method integrates a phase angle observer with a current controller to regulate real and reactive power. Lyapunov stability analysis and hardware experiments validate the effectiveness of the approach.

Suggested Citation

  • Shruti Pandey & Michael Mclntyre, 2025. "Nonlinear Self-Synchronizing Current Control for Single-Phase AC Inverters," Energies, MDPI, vol. 18(4), pages 1-11, February.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:4:p:941-:d:1592305
    as

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