  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.
