Improvements on E-PLL to Mitigate Transient Low-Frequency Oscillations

Authors

Keywords:

Enhanced Phase-Locked Loop, Orthogonal signal generators, Low-Frequency Oscillations, Power Quality

Abstract

This paper aims at improving the Enhanced-PLL (E-PLL) to mitigate the transient low-frequency oscillations, which is inherent to single-phase circuits. These improvements resulted in a new PLL configuration, designated here as the Double-Frequency Mitigation SOGI-EPLL, or simply DFM-SOGiEPLL. We integrate the EPLL with a Second-Order Generalized Integrator (SOGI), by modifying the computation of the internal error signals of the phase-and-frequency loop and the amplitude loop. Thus, the proposed DFM-SOGiEPLL is able to extinguish transient low-frequency oscillations, in a short time period, in comparison to the conventional EPLL. A dynamic model approach of both EPLLs, including four different test-cases, was implemented through numerical simulations and hardware experiments to verify the better performance of the proposed one.

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Author Biographies

Luis Fernando Monteiro, Rio de Janeiro State University, Rio de Janeiro, RJ, 20550-050, Brazil

Luís Fernando Corrêa Monteiro received the B.Sc. and M.Sc. degrees from the Federal University of Rio de Janeiro (UFRJ), in 2002 and 2004, respectively, and the D.Sc. degree from UFRJ in 2008. From 2006 to 2008 developed his D.Sc. research at University of Minho, Portugal. Currently, he is Associate Professor with Department of Electronics and Communications Engineering at Rio de Janeiro State University (UERJ). His research interests include active power conditioners, dynamic control systems, power quality, microgrids and renewables.

Cleiton Freitas, Rio de Janeiro State University, Rio de Janeiro, RJ, 20550-050, Brazil

Cleiton Magalhães Freitas received his B.Sc and M.Sc. in Electronic Engineering from Rio de Janeiro State University, in 2012 and 2014, respectively, and his D.Sc in Electrical Engineering from the Federal University of Rio de Janeiro/COPPE in 2020. Currently, he is an Assistant Professor at Rio de Janeiro State University. His current research interests include Modular Multilevel Converter and its analytical modeling, grid-forming converters, renewable resources, and stability analysis of power electronics converters.

Michel Tcheou, Rio de Janeiro State University, Rio de Janeiro, RJ, 20550-050, Brazil

Michel Pompeu Tcheou received the Engineering degree in electronics from Federal University of Rio de Janeiro (UFRJ) in 2003, the M.Sc. and D.Sc. degrees in Electrical Engineering from COPPE/UFRJ in 2005 and 2011, respectively. He has worked at the Electric Power Research Center (Eletrobras Cepel) in Rio de Janeiro, Brazil, from 2006 to 2011. Since 2012 he has been with the Department of Electronics and Communications Engineering (the undergraduate dept.) at Rio de Janeiro State University (UERJ). He has also been with the Postgraduate in Electronics Program. His research interests are in signal processing, communications, data compression, power quality and numerical optimization.

Dayane Lessa, Rio de Janeiro State University, Rio de Janeiro, RJ, 20550-900, Brazil

Dayane Mendonça Lessa received her B.Sc in Control and Automation Engineering from Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET/RJ), in 2010, and her M.Sc in Electronics Engineering from Rio de Janeiro State University, in 2019. Currently, she is Professor at CBM-UniCBE University Center, and Product Development Engineer at National Oilwell and Varco. Her current research interests include dynamic control systems, power quality, and subsea solutions.

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Published

2022-08-08

How to Cite

Monteiro, L. F., Freitas, C., Tcheou, M., & Lessa, D. (2022). Improvements on E-PLL to Mitigate Transient Low-Frequency Oscillations. IEEE Latin America Transactions, 20(10), 2244–2253. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/6401

Issue

Section

Electric Energy