Powered by OpenAIRE graph
Found an issue? Give us feedback
addClaim

Virtual impedance for droop control

Authors: Shu Wang;

Virtual impedance for droop control

Abstract

Conventional droop control for parallel Grid-Forming Inverters (GFMIs) relies on the assumption of highly inductive transmission lines to decouple active and reactive power. However, in low-voltage grids where transmission lines are predominantly resistive, this assumption fails, leading to power coupling, power-sharing inaccuracies, and system instability during load variations. This technical note presents the virtual impedance method to overcome these challenges. By digitally subtracting a calculated virtual voltage drop from the inverter's voltage reference, the control system mimics the behavior of an inductive line, effectively decoupling active and reactive power flows. The note provides a practical implementation of this strategy using MATLAB Simulink and the imperix ACG SDK, deployed on the TPI 8032 programmable inverter. Experimental results demonstrate that incorporating a well-tuned virtual inductance eliminates steady-state oscillations, restores system stability, and ensures accurate active power sharing between parallel GFMIs connected over resistive lines.

Related Organizations
  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Upload OA version
Are you the author of this publication? Upload your Open Access version to Zenodo!
It’s fast and easy, just two clicks!