An Effective Solution to Eliminate DC-Offset for Extracting the Phase and Frequency of Grid Voltage

Fehmi Sevilmiş and Hulusi Karaca

Mathematical Problems in Engineering, 2021, vol. 2021, 1-9

Abstract:

Recently, several approaches with the ability to reject the DC-offset in phase locked loop (PLL) methods have been developed. These approaches include different filtering structures which can be classified into two categories: prefiltering before the PLL input and in-loop filtering in the PLL control loop. As highlighted in the literature, the DC-offset rejection methods based on in-loop filtering have received less attention due to their slow dynamic performance. Therefore, this paper proposes an alternative DC-offset rejection technique as in-loop filtering of the PLL. The effectiveness of the proposed PLL is confirmed by simulation and experimental results.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlmpe:9742683

DOI: 10.1155/2021/9742683

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