A Strategy to Eliminate Instantaneous Active Power Oscillations and Reduce High Currents in the DFIG During Asymmetric Voltage Sags

Authors

  • Joacillo L. Dantas Federal Institute of Education, Science and Technology of Ceara, Fortaleza – Ceara, Brazil
  • Francisco K. de A. Lima Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil
  • Paulo H. P. Silva Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil
  • Jean M. L. Fonseca Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil
  • Carlos G. C. Branco Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil

DOI:

https://doi.org/10.18618/REP.2019.2.0021

Keywords:

Doubly-Fed Induction Generator, Instantaneous active and reactive power, Unbalanced voltage sag, wind power generation

Abstract

Wind turbines are widespread around the globe, and the number of windfarms connected to the grid is continually increasing. The Doubly-Fed Induction Generator (DFIG) plays an important role, since it is one of the most used configurations for wind power generation. DFIG-based wind plants, however, are very sensitive to grid disturbances, specially to voltage sags, as these machines have their stator circuit directly connected to the grid. Voltage sags can result in oscillations in active power, torque and DC link voltage, as well as damage the machine and the back-to-back converter due to high currents that arise in such type of contingency. This work proposes a control strategy applied to the rotor-side converter (RSC) of the DFIG, in order to protect the machine and the back-to-back converter during voltage sags. The aim of the control strategy is to reduce the machine currents and also to remove the oscillating active power caused by unbalanced voltage sags.

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Author Biographies

Joacillo L. Dantas, Federal Institute of Education, Science and Technology of Ceara, Fortaleza – Ceara, Brazil

holds a Bachelor’s Degree (1994), a Master’s Degree (2006) and a PhD (2017) in Electrical Engineering from the Federal University of Ceara. He was a guest PhD student in the Department of Energy Technology (Aalborg University) from 2014 to 2015. He has been a professor at the Federal Institute of Education, Science and Technology of Ceara (IFCE) since 1993. His areas of interest are: Power Electronics, Renewable Energies, Electrical Machine Drives and Active Power Filters. Joacillo L. Dantas has been a member of SOBRAEP since 2015.

Francisco K. de A. Lima, Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil

born on November 3, 1968 in Fortaleza, he is an Electrical Engineer (1998) and a Master’s Degree in Electrical Engineering (2003), by the University Federal of Ceará. He holds a PhD in Electrical Engineering from COPPE/Federal University of Rio de Janeiro in 2009. He is a professor in the Department of Electrical Engineering at the Federal University of Ceará. His areas of interest are: Power Electronics, Power Quality, Electric Machine Drives and Active Filtration. Dr. Francisco Kleber de A. Lima has been a member of SOBRAEP since 2002.

Paulo H. P. Silva, Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil

born in Brasilia on February 14, 1987, he holds a Bachelor’s degree in Physics from the State University of Ceara (2011), a Master’s degree in Nuclear Engineering from the Military Engineering Institute (2013) and is currently a PhD student in the Graduate Program in Electrical Engineering by Federal University of Ceara. He is interested in the area of Alternative Energies and its applications, especially in wind, solar and nuclear energy, studying mainly the following subjects: Doubly Fed Induction Generator (DFIG), Power Quality, FACTS devices, Fast Spectrum Nuclear Reactor, Energy Matrices and Energy Efficiency.

Jean M. L. Fonseca, Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil

holds a Bachelor’s degree in Electrical Engineering from the Federal University of Ceara (2017). He is currently pursing his Master’s degree at the same university. His research interests are Grid Synchronization, FACTS Devices and Wind Power Generation.

Carlos G. C. Branco, Department of Electrical Engineering, Federal University of Ceara, Fortaleza – Ceara, Brazil

holds a Bachelor’s Degree in Electrical Engineering from the Federal University of Ceará (2002) and a Master’s Degree in Electrical Engineering from the same university (2005). Since 2005 he has been working in the Research and Development area of High Frequency Isolated UPS Systems, Photovoltaic Power Systems and Machine Drives. Dr. Branco is currently an assistant professor in the Department of Electrical Engineering at the Federal University of Ceará and a member of IEEE and SOBRAEP.

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Published

2019-06-30

How to Cite

[1]
J. L. Dantas, F. K. de A. Lima, P. H. P. Silva, J. M. L. Fonseca, and C. G. C. Branco, “A Strategy to Eliminate Instantaneous Active Power Oscillations and Reduce High Currents in the DFIG During Asymmetric Voltage Sags”, Eletrônica de Potência, vol. 24, no. 2, pp. 188–195, Jun. 2019.

Issue

Vol. 24 No. 2 (2019)

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Original Papers

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