Standalone Operation of Inverter-Based Variable Speed Wind Turbines on DC Distribution Network

dc.contributor.authorAmini, Hosseinen
dc.contributor.authorNoroozian, Rezaen
dc.date.accessioned2025-06-25T14:34:35Zen
dc.date.available2025-06-25T14:34:35Zen
dc.date.issued2025-04-10en
dc.date.updated2025-06-25T13:18:50Zen
dc.description.abstractThis paper discusses the operation and control of a low-voltage DC (LVDC) isolated distribution network powered by distributed generation (DG) from a variable-speed wind turbine induction generator (WTIG) to supply unbalanced AC loads. The system incorporates a DC-DC storage converter to regulate network voltages and interconnect battery energy storage with the DC network. The wind turbines are equipped with a squirrel cage induction generator (IG) to connect a DC network via individual power inverters (WTIG inverters). Loads are unbalanced ACs and are interfaced using transformerless power inverters, referred to as load inverters. The DC-DC converter is equipped with a novel control strategy, utilizing a droop regulator for the DC voltage to stabilize network operation. The control system is modeled based on Clark and Park transformations and is developed for the load inverters to provide balanced AC voltage despite unbalanced load conditions. The system employs the perturbation and observation (P&O) method for maximum power point tracking (MPPT) to optimize wind energy utilization, while blade angle controllers maintain generator performance within rated power and speed limits under high wind conditions. System operation is analyzed under two scenarios: normal operation with varying wind speeds and the effects of load variations. Simulation results using PSCAD/EMTDC demonstrate that the proposed LVDC isolated distribution network (DC) achieves a stable DC bus voltage within ±5% of the nominal value, efficiently delivers balanced AC voltages with unbalanced levels below 2%, and operates with over 90% wind energy utilization during varying wind speeds, confirming LVDC network reliability and robustness.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationAmini, H.; Noroozian, R. Standalone Operation of Inverter-Based Variable Speed Wind Turbines on DC Distribution Network. Electricity 2025, 6, 21.en
dc.identifier.doihttps://doi.org/10.3390/electricity6020021en
dc.identifier.urihttps://hdl.handle.net/10919/135592en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleStandalone Operation of Inverter-Based Variable Speed Wind Turbines on DC Distribution Networken
dc.title.serialElectricityen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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