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Stability Analysis of DFIG with Virtual-Admittance-Based Grid-Forming Control under Different Grid Strenghts

Authors: Fedele, Emanuele; Campagna, Nicola; Bossi, Giuseppe; Rizzo, Renato; Miceli, Rosario; Damiano, Alfonso;

Stability Analysis of DFIG with Virtual-Admittance-Based Grid-Forming Control under Different Grid Strenghts

Abstract

Doubly-fed induction generators (DFIGs) are widely used in wind turbine systems. Traditionally, they rely on the grid voltage to operate. However, the increasing penetration of renewables necessitates wind turbines that can contribute to grid stability, and grid-forming control (GFM) has emerged as an attractive solution. Traditionally, the GFM control of DFIGs has been proposed as a single-loop control of the rotor flux magnitude and orientation, while double-loop schemes based on virtual impedance or virtual admittance have been scarcely investigated. This paper analyzes the operation and small-signal stability of a virtual-impedance-based dual-loop GFM control for DFIG. The small-signal impedance-model is derived and used to analyze the system stability in case of strong and weak grid connection. Electromagnetic transient simulations on a 1.5 MW wind turbine system are presented to validate the analysis.

Country
Italy
Keywords

Stability Analysis, Doubly-Fed Induction Generator, Grid-Forming Control, Stability Analysis, Wind Power, Doubly-Fed Induction Generator; Grid-Forming Control; Stability Analysis; Wind Power, Doubly-Fed Induction Generator, Grid-Forming Control, Wind Power

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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Energy Research