Theoretical analysis on the VSC instability caused by PLL in weak system
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DOI: 10.1049/iet-rpg.2019.1349
Abstract: The mechanism of voltage sourced converter's (VSC) instability caused by phase-locked-loop (PLL) in weak system is revealed in a simplified and efficient way. Based on the key-variables small signals model, the PLL's impact to VSC… read more here.
Keywords: system; frequency; instability caused; weak system ... See more keywords
Comparative Study of Small-Signal Stability Under Weak AC System Integration for Different VSCs
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DOI: 10.1109/jestpe.2020.3024196
Abstract: Voltage source converters (VSCs) with self-commutation ability are suitable for interconnecting weak ac systems. This article conducts a comparative study of the small-signal stability characteristics for three typical VSCs, namely, the two-level VSCs (TL-VSCs), the… read more here.
Keywords: comparative study; weak system; signal stability; small signal ... See more keywords