Unified Equivalent-circuit Models for Voltage-source Inverters that Capture Averaged Dynamics and Power-flow Solutions in Distribution Networks

Simple item page
dc.contributor.author Lu, Minghui
dc.contributor.author Purba, Victor
dc.contributor.author Dhople, Sairaj
dc.contributor.author Johnson, Brian
dc.date.accessioned 2020-12-24T19:39:53Z
dc.date.available 2020-12-24T19:39:53Z
dc.date.issued 2021-01-05
dc.description.abstract This paper demonstrates how three-phase distribution networks composed of voltage-source inverters can be modeled as a single unified equivalent-circuit network realized with familiar circuit elements. Such a model is derived by representing all physical- and control-subsystem dynamics as equivalent circuits. Two versions are put forth: the first captures averaged dynamics; while the second is a steady-state version of the first and it captures the power-flow solution in sinusoidal steady state. The main challenge in undertaking such an effort is presented by the fact that inverters are composed of subsystems (filters, pulse width modulators, phase-locked loops, controllers, direct-quadrature reference-frame transformations) that belong to multiple domains (physical and control). We demonstrate how all these constituent subsystems can be transcribed as equivalent circuits which then promote a single and unified circuit model that captures network physical- and control-layer dynamics. Numerical simulations for a representative distribution network compare results from the averaged model and the steady-state model with high-fidelity switch-level simulations. The results establish the validity of the circuit-based models and the computational benefits of the proposed approach.
dc.format.extent 10 pages
dc.identifier.doi 10.24251/HICSS.2021.394
dc.identifier.isbn 978-0-9981331-4-0
dc.identifier.uri http://hdl.handle.net/10125/71009
dc.language.iso English
dc.relation.ispartof Proceedings of the 54th Hawaii International Conference on System Sciences
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject Monitoring, Control and Protection
dc.subject inverters
dc.subject large scale dynamics
dc.subject modeling and simulation
dc.subject power electronics
dc.title Unified Equivalent-circuit Models for Voltage-source Inverters that Capture Averaged Dynamics and Power-flow Solutions in Distribution Networks
prism.startingpage 3242
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
0318.pdf
Size:
967.38 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Monitoring, Control and Protection