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Interactions between three-phase grid-connected voltage source converter (VSC) and ac network have been analyzed using the VSC ac-side impedance models in the dq-domain, and more recently, in the sequence domain. Both dq and sequence domain approaches ignore the effects of a network at the VSC dc-side terminals. Interactions between VSC and dc network have been similarly analyzed by ignoring the effects...
The impact of phase locked loop (PLL) parameters on the dynamic and steady-state behavior of a Voltage Sourced Converter (VSC) in an HVdc transmission system is determined as a function of the system strength (parameterized by the short circuit ratio -SCR). This is achieved by using a linearized small signal model of the converter system and its controls. The model is validated via electromagnetic...
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