A New Adaptive Phase-locked Loop for Synchronization of a Grid-Connected Voltage Source Converter: Simulation and Experimental Results

15 Sep 2023  ·  wei he, Jiachen Yan, Romeo Ortega, Daniele Zonetti, Wangping Zhou ·

In [1] a new adaptive phase-locked loop scheme for synchronization of a grid connected voltage source converter with guaranteed (almost) global stability properties was reported. To guarantee a suitable synchronization with the angle of the three-phase grid voltage we design an adaptive observer for such a signal requiring measurements only at the point of common coupling. An interesting feature of this scheme is the ability to synchronize in the challenging condition of connection with a grid with reduced short-circuit ratio. In this paper we present some simulation and experimental illustration of the excellent performance of the proposed solution.

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