Wind Energy Conversion System Based on DFIG with Three-Phase Series Grid Side Converter and Single DC-Link

Ítalo A. Cavalcanti de Oliveira; Cursino Brandao  Jacobina; Nady Rocha

doi:10.18618/REP.2021.2.0067

Authors

Ítalo A. Cavalcanti de Oliveira Post-Graduate Program in Electrical Engineering (PPgEE) - Federal University of Campina Grande (UFCG), Campina Grande – Paraíba, Brazil
Cursino Brandao Jacobina Electrical Engineering Department (DEE) - Federal University of Campina Grande (UFCG), Campina Grande – Paraíba, Brazil
Nady Rocha Electrical Engineering Department (DEE) - Federal University of Paraíba (UFPB), João Pessoa – Paraíba, Brazil

DOI:

https://doi.org/10.18618/REP.2021.2.0067

Keywords:

DFIG, Transformerless

Abstract

In this paper, a wind energy conversion system based on doubly-fed induction generator with an additional series grid side converter without transformer is proposed. Stator voltages may be compensated by series grid side converter under distorted and unbalanced grid voltage sags, thus avoiding over-current in the rotor, over-voltage in the dc-link, double-frequency oscillations in the electromagnetic torque, and rotor over-speed. Moreover, the control strategy of the proposed system allows reactive power to be injected during voltage sags. Simulation and experimental results are presented to evaluate the proposed system.

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Author Biographies

Ítalo A. Cavalcanti de Oliveira, Post-Graduate Program in Electrical Engineering (PPgEE) - Federal University of Campina Grande (UFCG), Campina Grande – Paraíba, Brazil

born in Paulista, Pernambuco, Brazil, in 1989. He received the B.S. and M.S. degrees in electrical engineering from the Federal University of Paraíba, João Pessoa, Brazil, in 2015 and 2017, respectively. He is currently working toward the Ph.D. degree in electrical engineering from Federal University of Campina Grande, Campina Grande. His research interests include energy system optimization, power electronics, and renewable energy, especially wind energy conversion systems.

Cursino Brandao Jacobina, Electrical Engineering Department (DEE) - Federal University of Campina Grande (UFCG), Campina Grande – Paraíba, Brazil

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 the Ph.D. degrees in electrical engineering from the Institut National Polytechnique de Toulouse, Toulouse, France, in 1980 and 1983, respectively. From 1978 to March 2002, he was with the Department of Electrical Engineering, Federal University of Paraíba, João Pessoa, Brazil. Since April 2002, he has been with the Department of Electrical Engineering, Federal University of Campina Grande, Campina Grande, Brazil, where he is currently a Professor of Electrical Engineering. His research interests include electrical drives, power electronics and energy systems.

Nady Rocha, Electrical Engineering Department (DEE) - Federal University of Paraíba (UFPB), João Pessoa – Paraíba, Brazil

born in São Gabriel, Bahia, Brazil, in 1982. 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 2006, 2008, and 2010, respectively. Since 2011, he has been with the Department of Electrical Engineering, Federal University of Paraíba, João Pessoa, where he is currently an Associate Professor of Electrical Engineering. His research interests include power electronics, renewable energy sources and electrical drives.

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