A Luenberger observer-based phase locked loop for single-phase systems under harmonic disturbances
International Journal of Electrical Power & Energy Systems(2020)
摘要
•The LO-QSG has a decay rate of −40 dB/dec at high frequencies for both estimated signals.•The PLL with the proposed LO-QSG has good harmonic robustness.•The proposed LO-QSG is based on linear observer technology.
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关键词
Quadrature signal generator (QSG),Phase locked loop (PLL),Luenberger observer,Harmonic suppression
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