A digital PLL control method based on the FIR filter for a grid-connected single-phase power conversion system

A digital phase-locked loop (PLL) based on a fictitious two-phase transformation for a grid-connected single-phase power conversion system is described in detail. It is proposed that two voltage vectors v alpha , v beta are implemented by a finite impulse response (FIR) filter in this paper. The pro...

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Bibliographic Details
Main Authors: Ren, Bi-Ying, Zhong, Yan-Ru, Sun, Xiang-Dong, Tong, Xiang-Qian
Format: Conference Proceeding
Language:English
Subjects:
Delay
Finite impulse response filter
Frequency measurement
Harmonic analysis
IIR filters
Phase locked loops
Power harmonic filters
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Summary:A digital phase-locked loop (PLL) based on a fictitious two-phase transformation for a grid-connected single-phase power conversion system is described in detail. It is proposed that two voltage vectors v alpha , v beta are implemented by a finite impulse response (FIR) filter in this paper. The proposed method is verified by simulation and experiment. In the simulation, besides the steady state response, the influence of the changes of some parameters such as voltage magnitude, grid frequency, the filter order, the 3 rd harmonic injection, on the proposed method is simulated. The fast phase track is realized in the experiment.
DOI:10.1109/ICIT.2008.4608622