Parameter estimation of harmonics-polluted single-phase grid voltage signal

Miao Lin Pay, Hafiz Ahmed

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
8 Downloads (Pure)


Estimation of instantaneous phase and frequency of harmonics-polluted single-phase grid voltage signal have been studied in this paper. The proposed approach uses a frequency adaptive Luenberger-sliding mode observer. Using Lyapunov stability theory, a frequency adaptation law has been proposed. The proposed frequency adaptive observer technique is robust against various perturbations faced in the practical settings, e.g., discontinuous jump of phase, frequency and amplitude. Global stability analysis of the closed-loop observer has been performed. Experimental results demonstrate the effectiveness of the proposed technique over a state-of-the-art technique proposed in the literature.
Original languageEnglish
Pages (from-to)1351-1359
Number of pages9
JournalElectrical Engineering
Issue number3
Early online date27 Feb 2020
Publication statusPublished - 1 Sep 2020

Bibliographical note

The final publication is available at Springer via

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.


  • Power system
  • Phase estimation
  • Frequency estimation
  • PLL
  • Adaptive observer


Dive into the research topics of 'Parameter estimation of harmonics-polluted single-phase grid voltage signal'. Together they form a unique fingerprint.

Cite this