Fractional-Order Phase Lead Compensation Multirate Repetitive Control for Grid-Tied Inverters
Fen Liang,
Ho-Joon Lee,
Hongwei Zhang
Abstract:To reduce computational load and memory consumption, multirate repetitive control (MRC) with downsampling rates provides a flexible and efficient design for proportional-integral multi-resonant repetitive control (PIMR-RC) systems for grid-tied inverters. However, in MRC systems, repetitive controllers with low sampling rates produce low delay periods, and integer-order phase lead compensation may cause undercompensation or overcompensation. These imprecise linear phase lead compensations may result in deterio… Show more
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