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

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.

Tasks

Reproductions