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arXiv · 2506.17044

On the input admittance of a universal power synchronization controller with droop controllers

Orcun Karaca·Irina Subotic·Lennart Harnefors·Ioannis Tsoumas
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Abstract

Recent work has proposed a universal framework that integrates the well-established power synchronization control into vector current control. Using this controller for the parallel operation of grid-forming converters, and/or with loads that have strong voltage magnitude sensitivity, requires additional loops manipulating the voltage magnitude, e.g., $QV$ and $PV$ voltage-power droop controllers. This paper derives the input admittance of the resulting overall scheme. Sensitivity analyses based on the passivity index demonstrate the benefits of the proportional components of $QV$ and $PV$ control. A case study is presented where a grid-forming converter is operated in parallel with a generator.

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Orcun Karaca, Irina Subotic, Lennart Harnefors, Ioannis Tsoumas. 2025-06-20. On the input admittance of a universal power synchronization controller with droop controllers. https://arxiv.org/abs/2506.17044

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