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Grid-Forming Vector Current Control FRT Modes Under Symmetrical and Asymmetrical Faults
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Grid-Forming Vector Current Control FRT Modes Under Symmetrical and Asymmetrical Faults
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Paper
Grid-Forming Vector Current Control FRT Modes Under Symmetrical and Asymmetrical Faults
2025
Overview
Recent research has shown that operating grid-connected converters using the grid-forming vector current control (GFVCC) scheme offers significant benefits, including the simplicity and modularity of the control architecture, as well as enabling a seamless transition from PLL-based grid-following control to grid-forming. An important aspect of any grid-connected converter control strategy is the handling of grid-fault scenarios such as symmetrical and asymmetrical short-circuit faults. This paper presents several fault ride-through (FRT) strategies for GFVCC that enable the converter to provide fault current and stay synchronized to the grid while respecting the converter hardware limitations and retaining grid-forming behavior. The converter control scheme is extended in a modular manner to include negative-sequence loops, and the proposed FRT strategies address both symmetrical and asymmetrical faults. The proposed FRT strategies are analyzed through case studies, including infinite-bus setups and multi-unit grids.
Publisher
Cornell University Library, arXiv.org
Subject
