Abstract
During the years, grid connected operation in power systems has been the key factor for renewable energy resource to be able to exchange energy to the electrical grid. However, with the increase of small power systems and micro-grids, the standalone operation and the blackstart of the power system has been increasingly considered a demand in most of power converters connected to the micro-grid system. The grid-forming power converter strategy has been widely used in micro-grid scenarios, taking the virtual synchronous machine concept behind it. This emulation of a synchronous machine benefits the power converter with additional features, such as island operation or blackstart. In this regard, this paper presents a resynchronization system for a grid-forming power converters, based on the synchronous power control, the match the phase angle of the utility grid prior to its connection.
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