Deadbeat voltage control for a grid-forming power converter with LCL filter
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
Impacto
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10.1109/TIA.2022.3219040
Resumen
Grid-forming power converters are controlled as voltage sources to regulate the grid voltage and frequency. These converters can increase power system strength if they impose a voltage waveform resilient to grid transients. For this reason, in this paper, we propose a deadbeat control strategy of the capacitor voltage for high power converters with LCL filter. To damp the LCL resonant poles, an a ...
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Grid-forming power converters are controlled as voltage sources to regulate the grid voltage and frequency. These converters can increase power system strength if they impose a voltage waveform resilient to grid transients. For this reason, in this paper, we propose a deadbeat control strategy of the capacitor voltage for high power converters with LCL filter. To damp the LCL resonant poles, an active damping strategy is developed, based on a modification of the deadbeat control law. With this purpose, a notch filter is applied to the electrical variables allowing to emulate different damping resistances for the fundamental component and the harmonics. As a result, the active damping does not introduce tracking errors of the fundamental frequency component, while it provides damping to the filter resonance. The proposed strategy does not require knowledge of the grid impedance, an interesting feature in grid-connected power converters because the grid impedance is generally unknown. Experimental results validate the proposed strategy. [--]
Materias
Grid-Forming Converter (GFC),
Deadbeat Control (DBC),
LCL Filter,
Capacitor voltage control,
Active damping,
Notch filter
Editor
IEEE
Publicado en
IEEE transactions on industry applications, 59(2), 2023
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
This work was supported in part by Spanish State
Research Agency (AEI) under Grants PID2019-110956RB-I00 /AEI/ 10.13039
and TED2021-132604B-I00, in part by the Spanish Ministry of Universities
through “Programa Estatal de Promoción del Talento y su Empleabilidad en
I+D+i, Subprograma Estatal de Movilidad, del Plan Estatal de Investigación
Científica y Técnica y de Innovación 2017-2020” Program, in part by the
Advanced Center for Electrical and Electronics Engineering (AC3E) under Grant
ANID/FB0008, in part by Solar Energy Research Center (SERC) under Grant
ANID/FONDAP/15110019, and in part by the ANID/Fondecyt under Regular
Grant 1211826.