Passivity-based voltage control of DC microgrids: addressing the stability issue of ZIP loadsCucuzzella, M., Kosaraju, K. C. & Scherpen, J. M. A., 2020, p. extended abstract.
Research output: Contribution to conference › Abstract › Academic
n this work we propose a new passivity-basedcontrol technique for DC power networks comprising theso-called ZIP-loads, i.e., nonlinear loads with the parallelcombination of unknown constant impedance (Z), current (I)and power (P) components. More precisely, we propose a novelpassifying input and a storage function based on the so-calledmixed potential function introduced by Brayton and Moser,leading to a novel passivity property with output port-variableequal to the first time derivative of the voltage. Differently fromthe existing results in the literature, where restrictive (sufficient)conditions on Z, P and the voltage reference are assumed to besatisfied, we establish a passivity property for every positivevoltage reference and every type of load. Consequently, wedevelop a new decentralized passivity-based control scheme thatis robust with respect to the uncertainty affecting the ZIP-loads.
|Publication status||Published - 2020|
|Event||2020 European Control Conference (ECC) - Saint Petersburg, Russian Federation|
Duration: 12-May-2020 → 15-May-2020
|Conference||2020 European Control Conference (ECC)|
|Period||12/05/2020 → 15/05/2020|
2020 European Control Conference (ECC)
12/05/2020 → 15/05/2020Saint Petersburg, Russian Federation