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oai:recercat.cat:2117/4033002026-01-30T07:57:14Zcom_2072_1033col_2072_452950

Pairing grid-forming VSC filter topologies with voltage control structures Girona-Badia, Jaume Prieto Araujo, Eduardo Gomis Bellmunt, Oriol Universitat Politècnica de Catalunya. Doctorat en Enginyeria Elèctrica Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica Universitat Politècnica de Catalunya. CITCEA-UPC - Centre d'Innovació Tecnològica en Convertidors Estàtics i Accionaments Voltage regulators Grid-forming control Voltage control Control-filter pairing Reguladors de voltatge This paper focuses on the voltage control of grid-forming Voltage Source Converters (VSCs) connected to AC networks. The work aims to identify the best pairing between voltage control structures and usual ac filter topologies. The two filter topologies considered are the inductive (L) and the inductive–capacitive (LC) filter. The control structures studied are the Cascaded Control (CC, cascaded voltage and current loop) and the direct Voltage Control (VC, without current loop). To select the best control-filter pair, the following methodology is suggested. First, for each pair, a voltage control parameter sweeping methodology is developed to find suitable designs considering the following limits: minimum bandwidth, maximum converter voltage, point of connection voltage deviation and maximum current. Second, this action is repeated for different filter parameters and network Short-Circuit Ratios (SCRs). Finally, based of the obtained results, the most relevant control-filter pairs can be selected, prioritizing them according to the fulfilment of the defined limits. To conclude, time-domain simulations are carried out to validate pairing selection. This work was supported by the European Union’s Horizon 2020 Research and Innovation Program [Powering System Flexibility in the Future through Renewable Energy Sources (POSYTYF) Project] under Grant 883985. The work of Oriol Gomis-Bellmunt was supported by the Institució Catalana de Recerca i Estudis Avançats (ICREA) Academia Program. The work of Jaume Girona-Badia was supported by FI-SDUR grant from AGAUR. Postprint (published version) 2024-01 Article Girona-Badia, J.; Prieto-Araujo, E.; Gomis-Bellmunt, O. Pairing grid-forming VSC filter topologies with voltage control structures. "International journal of electrical power & energy systems", 2024, vol. 155, núm. article 109670. 0142-0615 https://hdl.handle.net/2117/403300 10.1016/j.ijepes.2023.109670 eng https://www.sciencedirect.com/science/article/pii/S0142061523007275?via%3Dihub info:eu-repo/grantAgreement/EC/H2020/883985/EU/POwering SYstem flexibiliTY in the Future through RES/POSYTYF http://creativecommons.org/licenses/by-nc-nd/4.0/ Open Access Attribution-NonCommercial-NoDerivatives 4.0 International application/pdf Elsevier