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Globally stable tracking and estimation for single-phase electrical signals with DC-offset rejection

Pin, G; Chen, B; Fedele, G; Parisini, T; (2019) Globally stable tracking and estimation for single-phase electrical signals with DC-offset rejection. In: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society. (pp. pp. 4663-4668). IEEE: Lisbon, Portugal, Portugal. Green open access

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Abstract

This work introduces a new algorithm, named Global Quadrature PLL (GQPLL) for tracking a sinusoidal signal and for estimating its frequency and amplitude. The proposed technique derives from the well-known PLL architecture based on Quadrature Signal Generation, that is widely used for tracking the fundamental of single-phase electrical signals. The proposed algorithm improves the existing quadrature-PLL solutions from two different perspectives. First, the cancellation of the DC-bias is embedded by construction. Moreover, a Lyapunov-based stability analysis guarantees the global convergence of the estimates for arbitrarily large adaptation gains, enabling fast adaptation transients. Simulations show that the proposed algorithm is able to deal with sudden variations of the fundamental frequency and of the DC-bias magnitude.

Type: Proceedings paper
Title: Globally stable tracking and estimation for single-phase electrical signals with DC-offset rejection
Event: 45th Annual Conference of the IEEE Industrial Electronics Society
Location: Lisbon
Dates: 14 October 2019 - 17 October 2019
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/IECON.2019.8927095
Publisher version: https://doi.org/10.1109/IECON.2019.8927095
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10083604
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