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Title: Dispatchable Virtual Oscillator Control for Decentralized Inverter-Dominated Power Systems: Analysis and Experiments: Preprint

Abstract

This paper presents an analysis and experimental validation of dispatchable virtual oscillator control (dVOC) for inverter-dominated power systems. dVOC is a promising decentralized control strategy that requires only local measurements to induce grid-forming behavior with programmable droop characteristics. It is dispatchable -- i.e., the inverters can vary their power generation via user-defined power set-points and guarantees strong stability. To verify its feasibility, a testbed comprising multiple dVOC-programmed inverters with transmission line impedances is designed. With an embedded synchronization strategy, the dVOC inverters are capable of dynamic synchronization, black start operation, and transient grid voltage regulation with dynamic load sharing, and real-time-programmable droop characteristics for backward compatibility. All these features are experimentally verified.

Authors:
 [1];  [1];  [2];  [3];  [2];  [2]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. ETH Zurich
  3. University of Washington
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1561508
Report Number(s):
NREL/CP-5D00-72774
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; microgrids; droop control; nonlinear control; synchronization; decentralized control; grid-forming control; voltage source inverters

Citation Formats

Seo, Gabsu, Colombino, Marcello, Subotic, Irina, Johnson, Brian, Gross, Dominic, and Dorfler, Florian. Dispatchable Virtual Oscillator Control for Decentralized Inverter-Dominated Power Systems: Analysis and Experiments: Preprint. United States: N. p., 2019. Web. doi:10.1109/APEC.2019.8722028.
Seo, Gabsu, Colombino, Marcello, Subotic, Irina, Johnson, Brian, Gross, Dominic, & Dorfler, Florian. Dispatchable Virtual Oscillator Control for Decentralized Inverter-Dominated Power Systems: Analysis and Experiments: Preprint. United States. doi:10.1109/APEC.2019.8722028.
Seo, Gabsu, Colombino, Marcello, Subotic, Irina, Johnson, Brian, Gross, Dominic, and Dorfler, Florian. Fri . "Dispatchable Virtual Oscillator Control for Decentralized Inverter-Dominated Power Systems: Analysis and Experiments: Preprint". United States. doi:10.1109/APEC.2019.8722028. https://www.osti.gov/servlets/purl/1561508.
@article{osti_1561508,
title = {Dispatchable Virtual Oscillator Control for Decentralized Inverter-Dominated Power Systems: Analysis and Experiments: Preprint},
author = {Seo, Gabsu and Colombino, Marcello and Subotic, Irina and Johnson, Brian and Gross, Dominic and Dorfler, Florian},
abstractNote = {This paper presents an analysis and experimental validation of dispatchable virtual oscillator control (dVOC) for inverter-dominated power systems. dVOC is a promising decentralized control strategy that requires only local measurements to induce grid-forming behavior with programmable droop characteristics. It is dispatchable -- i.e., the inverters can vary their power generation via user-defined power set-points and guarantees strong stability. To verify its feasibility, a testbed comprising multiple dVOC-programmed inverters with transmission line impedances is designed. With an embedded synchronization strategy, the dVOC inverters are capable of dynamic synchronization, black start operation, and transient grid voltage regulation with dynamic load sharing, and real-time-programmable droop characteristics for backward compatibility. All these features are experimentally verified.},
doi = {10.1109/APEC.2019.8722028},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}

Conference:
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