REPETITIVE RIPPLE ESTIMATOR FILTER BASED PHASE-LOCKED LOOP

Filip Filipović, Milutin Petronijević, Nebojša Mitrović, Bojan Banković, Vojkan Kostić

DOI Number
https://doi.org/10.22190/FUACR240924007F
First page
095
Last page
109

Abstract


In this paper, a novel phase-locked loop is presented based on a repetitive ripple estimator filter. The primary application of the presented phase-locked loop is in the monitoring of three-phase grid voltages and synchronization of grid connected power converters for renewable energy sources with the grid. The filter is inserted inside the loop filter of the phase-locked loop to reject oscillations that can be expected from common grid voltage disturbances. Details of the filter and phase-locked loop are presented, along with the influence of all freely adjustable parameters on overall system behaviour. In the end, the behaviour of the novel phase-locked loop is tested, validated and compared to the base phase-locked loop.

Keywords

Renewable energy sources, phase-locked loop, synchronization

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References


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DOI: https://doi.org/10.22190/FUACR240924007F

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