TY - JOUR A1 - Klaes, Norbert A1 - Pöschke, Florian A1 - Schulte, Horst ED - Prieto-Araujo, Eduardo ED - Mañé, Marc Cheah ED - Gomis-Bellmunt, Oriol T1 - Grid Forming Stator Flux Control of Doubly-Fed Induction Generator JF - Energies N2 - The doubly fed induction generator is widely used in wind power applications. For stand-alone operation of this machine, the control of the stator flux with fixed voltage and frequency has been proposed. This paper extends the stator flux control of the doubly fed induction machine by droop mechanisms, which vary the setpoint of flux magnitude and frequency depending on active and reactive power. This gives the doubly fed induction generator system unknown grid supporting and grid forming performance. The validation of the proposed control scheme has been conducted on a 10kVA testbed system. The closed-loop behavior of the system has been proven to enable grid-tied and islanded operation with the same control structure. The system response to load changes and islanding events show no disruptive transients in both conditions. KW - - KW - doubly fed induction generator KW - stator flux control KW - droop control KW - microgrid KW - voltage-fed control KW - distributed energy generation KW - islanding KW - phase intervention Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:523-15259 SN - 1996-1073 VL - 14 IS - 20 SP - 1 EP - 12 PB - MDPI ER - TY - JOUR A1 - Klaes, Norbert A1 - Goldschmidt, Nico A1 - Fortmann, Jens T1 - Voltage Fed Control of Distributed Power Generation Inverters with Inherent Service to Grid Stability JF - Energies KW - droop control KW - microgrid KW - fault ride through KW - voltage fed control KW - distributed energy generation KW - islanding KW - phase intervention Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:523-3773 SN - 1996-1073 VL - 13 IS - 10 PB - MDPI ER -