Control Design, Stability Analysis and Experimental Validation of New Application of an Interleaved Converter Operating as a Power Interface in Hybrid Microgrids

Thiago Tricarico, Gustavo Gontijo, Marcello Neves, Matheus Soares, Mauricio Aredes and Josep M. Guerrero
Additional contact information
Thiago Tricarico: Electrical Engineering Department, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering/Federal University of Rio de Janeiro (COPPE/UFRJ), Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Ilha do Fundão, Rio de Janeiro, RJ 21941-909, Brazil
Gustavo Gontijo: Electrical Engineering Department, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering/Federal University of Rio de Janeiro (COPPE/UFRJ), Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Ilha do Fundão, Rio de Janeiro, RJ 21941-909, Brazil
Marcello Neves: Electrical Engineering Department, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering/Federal University of Rio de Janeiro (COPPE/UFRJ), Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Ilha do Fundão, Rio de Janeiro, RJ 21941-909, Brazil
Matheus Soares: Electrical Engineering Department, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering/Federal University of Rio de Janeiro (COPPE/UFRJ), Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Ilha do Fundão, Rio de Janeiro, RJ 21941-909, Brazil
Mauricio Aredes: Electrical Engineering Department, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering/Federal University of Rio de Janeiro (COPPE/UFRJ), Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Ilha do Fundão, Rio de Janeiro, RJ 21941-909, Brazil
Josep M. Guerrero: Department of Energy Technology, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg, Denmark

Energies, 2019, vol. 12, issue 3, 1-23

Abstract: This paper presents a new and specific use of a bidirectional interleaved converter to perform a power interface in hybrid microgrids. The converter is responsible for regulating the power flow between the direct-current (DC) microgrid and the rest of the hybrid microgrid by controlling the DC microgrid voltage. The authors present a detailed modeling of the mentioned system in order to develop the system control design and a stability analysis. In addition, the authors propose a new control design strategy aiming at improving the voltage control disturbance rejection characteristic, while maintaining a good dynamic behavior regarding the reference tracking functionality. In this hybrid microgrid topology, a back-to-back converter connects the main grid to the AC microgrid. The main objective of this converter is to provide a high-power-quality voltage to critical and sensitive loads connected to the microgrid. The interleaved converter adjusts the DC microgrid voltage according to the operational voltage of the back-to-back converter DC link. In the DC microgrid case, the variation of load and generation connection could lead to serious voltage sag and oscillations that could be harmful to the sensitive loads. The voltage controller must be capable of rejecting these disturbances in order to maintain a high-power-quality voltage. Furthermore, experimental results are provided in order to validate this specific application of the interleaved converter and the presented control design strategy.

Keywords: interleaved converter; hybrid microgrids; power flow interface; linear control theory (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/3/437/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/3/437/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:3:p:437-:d:201984

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().