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    About

    About

    Louelson Afranio Leugirdes de Azevedo Cavalcanti Costa (Member, IEEE) was born in Bananeiras, Brazil. He received a B.S., M.Sc., and D.Sc. degrees in electrical engineering from the Federal University of Campina Grande (UFCG), Brazil, in 2014, 2016, and 2020, respectively. From August 2018 to July 2019, he was at the Center for Power Electronics Systems (CPES), Virginia Polytechnic Institute and State University (VT), Blacksburg, VA, USA, as a Visiting Scholar. From January 2020 to April 2021, he was at the Department of Computer Engineering and Automation (DCA), Federal University of Rio Grande do Norte (UFRN), Brazil, as a Temporary Professor. Since August 2021, he has been with the Centre for Power and Energy Systems (CPES), Institute for Systems and Computer Engineering, Technology and Science (INESC TEC), Portugal, as a Researcher. He is a member of the Industry Applications Society (IAS) and Power Electronics Society (PELS) of the Institute of Electrical and Electronics Engineers (IEEE). His research interests include power electronics, renewable energy systems, and AI applied to power electronics.

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    Details

    Details

    • Name

      Louelson Costa

    • Cluster

      Power and Energy

    • Role

      Assistant Researcher

    • Since

      01st August 2021
    Publications
    View all Publications

    2021

    X-Type Current Source Converters

    Authors
    Costa, LALDC; Vitorino, MA; Correa, MBD; Hartmann, LV; Ramalho, AWS;

    Publication
    IEEE TRANSACTIONS ON POWER ELECTRONICS

    Abstract
    In this article, a novel topology generalization of a current source converter (CSC) that allows controlling of multiple single-phase ac converters independently sharing the same dc-bus, with the advantage of having a reduced number of conducting switches and a lower dc-bus current, is presented. A conventional n-output/port single-phase CSC that uses the same dc-bus needs to have n H-bridge converters connected in series, which means that it always has 2n conducting switches. The new topology allows generating any n ac output currents always having only (n + 1) conducting switches in a switching period. This represents (1 - 1/n). 50% less conduction losses when compared with the equivalent conventional multiport single-phase CSC. A scalar pulsewidth modulation to control the converters with switching optimization and its generalization is also presented. Details of topology, control strategy, and modulation are presented. Simulation and experimental results are provided to validate the theoretical approach.

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    2020

    The Fast Over-voltage Protection Consideration and Design for SiC-based Matrix Converters

    Authors
    Costa, LA; Fan, B; Burgos, R; Boroyevich, D; Chen, W; Blasko, V;

    Publication
    2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

    Abstract

    2019

    Multiphase X-Type Current Source Rectifier with Reduced Active Switch Count

    Authors
    Costa, LA; Vitorino, MA; Correa, MBR; Boroyevich, D;

    Publication
    2019 IEEE Applied Power Electronics Conference and Exposition (APEC)

    Abstract

    2019

    Three-Phase Hybrid AC-DC-AC Voltage/Current Source Converter for Wind Energy Conversion Systems

    Authors
    Santos, NIL; de A. C. Costa, LAL; Correa, MBR; Vitorino, MA;

    Publication
    2019 IEEE Energy Conversion Congress and Exposition (ECCE)

    Abstract

    2019

    Three-phase Multilevel Asymmetric Current Source Converter

    Authors
    Santos, NIL; de A. C. Costa, LAL; Vitorino, MA; Correa, MBR;

    Publication
    2019 IEEE Energy Conversion Congress and Exposition (ECCE)

    Abstract