Maximum current injection method for grid-forming inverters in an islanded microgrid subject to short circuits
| Autor: | Jaume Miret, Miguel Castilla, Manel Velasco, Ramón Guzmán, Luis García de Vicuña |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial, Universitat Politècnica de Catalunya. SEPIC - Sistemes Electrònics de Potència i de Control |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Microxarxes (Xarxes elèctriques intel·ligents)
Microgrids (Smart power grids) Electrical and Electronic Engineering Voltage regulators Sistemes de distribució d'energia elèctrica -- Estabilitat Enginyeria electrònica::Electrònica de potència::Convertidors de corrent elèctric [Àrees temàtiques de la UPC] |
| Popis: | In islanded microgrids, when a short circuit or a sudden overload occurs, it provokes an abrupt increment in the currents supplied by the generation nodes, which feed the load collaboratively. This is particularly challenging for inverter-based nodes, due to its reduced power capacity. This work takes advantage of the droop-method basic configuration to propose an additional closed-loop control, which ensures maximum current injection during any kind of short circuit maintaining the underlying droop control. Ensuring that any node injects its maximum rated current during the short circuit, it emulates the most common low-voltage ride-through protocols for grid-feeding sources oriented to support the grid and, in this way, the voltage unbalance is reduced. To develop the control proposal, a model of the faulted system is presented in order to evaluate the stability of the closed-loop system. A general modelling methodology is introduced in order to derive the control for any microgrid configuration. Finally, selected experimental results are reported in order to validate the effectiveness of the proposed control. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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