This research delves into the management approach of grid-connected inverters in solar energy storage setups utilizing the Virtual Synchronous Generator (VSG) design, with a particular focus on enhancing the control strategy for Low Voltage Ride-Through (LVRT) occurrences. It outlines the operational principles of VSG and its integration in grid-connected inverters for solar energy storage setups. To tackle the issue of low voltage ride-through, a refined balanced current control strategy grounded on differential flatness control is suggested. In contrast to conventional techniques, the utilization of differential flatness control significantly enhances control precision and system recovery speed, empowering solar energy storage setups to react more swiftly and reliably to grid disturbances.

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The Research on Low Voltage Ride-Through Control Strategy of VSG for PV-Storage System Grid-Connected Inverter

  • Yanda Zhu,
  • Guizhen Tian,
  • Weijie Wang,
  • Yong Han

摘要

This research delves into the management approach of grid-connected inverters in solar energy storage setups utilizing the Virtual Synchronous Generator (VSG) design, with a particular focus on enhancing the control strategy for Low Voltage Ride-Through (LVRT) occurrences. It outlines the operational principles of VSG and its integration in grid-connected inverters for solar energy storage setups. To tackle the issue of low voltage ride-through, a refined balanced current control strategy grounded on differential flatness control is suggested. In contrast to conventional techniques, the utilization of differential flatness control significantly enhances control precision and system recovery speed, empowering solar energy storage setups to react more swiftly and reliably to grid disturbances.