Self-Supported Transformerless Series Active Power Filter for Wide-Range Load Voltage Compensation

Aléssio T. S. S. Santos; Cursino B. Jacobina; Jean T. Cardoso; Alan S. Felinto

doi:10.18618/REP.e202635

Authors

Aléssio T. S. S. Santos Federal University of Campina Grande https://orcid.org/0009-0003-2877-5262
Cursino B. Jacobina Federal University of Campina Grande
Jean T. Cardoso Federal Rural University of Pernambuco
Alan S. Felinto State University of Paraíba https://orcid.org/0000-0002-3728-1710

DOI:

https://doi.org/10.18618/REP.e202635

Keywords:

Power Quality, Series Active Filter, Transformerless

Abstract

This paper investigates a three-phase transformerless series active power filter based on open-end connections. The studied system was designed to mitigate power quality issues, including voltage harmonics, as well as balanced and unbalanced voltage sags and swells. The topology operates with the fourth wire connected through an additional leg. The developed control strategy eliminates the need for phase jumps in the load voltage, operates independently of the load power factor, and does not require fixed DC sources at the DC-link, making it a simpler and more efficient solution when compared with conventional approaches. The system model, the pulse-width modulation (PWM) scheme, and the design of the controllers and passive components are presented, while the overall control methodology is discussed in detail. In addition, a comparative analysis among the considered topologies is carried out. Finally, simulation and experimental results are presented to validate the feasibility and effectiveness of the proposed system.

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Author Biographies

Aléssio T. S. S. Santos, Federal University of Campina Grande

was born in Floriano, Piauí, Brazil, in 1998. He received the B.Sc. degree in Electrical Engineering from the Federal University of Campina Grande (2023). He is currently pursuing the M.Sc. degree in Electrical Engineering at the same institution, with research interests in power electronics and electrical machines.

Cursino B. Jacobina, Federal University of Campina Grande

was born in Correntes, Brazil, in 1955. He received the B.S. degree in electrical engineering from the Federal University of Paraíba, Campina Grande, Brazil, in 1978 and the Diplôme d'Etudes Approfondies and Ph.D. degrees in electrical engineering from the Institut National Polytechnique de Toulouse, Toulouse, France, in 1980 and 1983, respectively. From 1978 to 2002, he was with the Department of Electrical Engineering, Federal University of Paraíba. Since 2002, he has been with the Department of Electrical Engineering, Federal University of Campina Grande, where he is currently a Professor. His research interests include electrical drives, power electronics, and energy systems.

Jean T. Cardoso, Federal Rural University of Pernambuco

was born in João Pessoa, Paraíba, Brazil, in 1994. He received the B.S. degree in electrical engineering from the Federal University of Paraíba (UFPB), João Pessoa, Brazil, in 2018, and the M.S. and Ph.D. degrees in electrical engineering from the Federal University of Campina Grande (UFCG), Campina Grande, Brazil, in 2020 and 2024, respectively. Since July 2025, he has been with the Federal Rural University of Pernambuco (UFRPE), Cabo de Santo Agostinho, Brazil, where he is currently a professor. His research interests include power electronics and power quality.

Alan S. Felinto, State University of Paraíba

was born in Pombal, Paraíba, Brazil, in 1993. He received the B.S., M.S. and Ph.D. degrees in electrical engineering from the Federal University of Campina Grande, Campina Grande, Brazil, in 2017, 2018 and 2022, respectively. Since 2025 he has been with the coordination of the renewable energy systems course, in the State University of Paraíba, where he is currently a Professor. His current research interests include renewable energy, static converters and active power filters.

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