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A Robust Vector Current Controller with Negative-Sequence Current Capability for Grid-Connected Inverters

Author

Listed:
  • Houshang Karimi

    (Department of Electrical Engineering, Ploytechnique Montreal, Montreal, QC H3T 1J4, Canada)

  • Aboutaleb Haddadi

    (Electric Power Research Institute (EPRI), Palo Alto, CA 94304, USA)

  • Masoud Karimi-Ghartemani

    (Department of Electrical and Computer Engineering, Mississippi State University, Starkville, MS 39762, USA)

  • Mahdieh Sadabadi

    (Department of Automatic Control and Systems Engineering, University of Sheffield, Sheffield S1 3JD, UK)

Abstract

This paper presents a vector current controller (in the synchronous reference, or the dq, frame) with negative-sequence current injection capability for three-phase grid-connected converters. This capability is desired for the operation of the converter during unbalanced conditions and also for a certain type of islanding detection. The proposed controller first determines the double-frequency current references and then uses a sixth-order two-input two-output proportional-integral-resonance (PIR) structure, which is optimally designed. Compared with the existing similar approaches, the proposed controller has a simpler structure and more robust performance, e.g., against system parameter uncertainties and weak grid conditions. The proposed controller is developed for converters with both the L -type and L C L -type filters. For the L C L -type converter, a suboptimal partial state feedback control is also proposed to achieve robust stability and active damping of resonance poles without requiring additional sensors. Detailed experimental results are presented to illustrate the properties and performances of the proposed controller.

Suggested Citation

  • Houshang Karimi & Aboutaleb Haddadi & Masoud Karimi-Ghartemani & Mahdieh Sadabadi, 2021. "A Robust Vector Current Controller with Negative-Sequence Current Capability for Grid-Connected Inverters," Energies, MDPI, vol. 14(15), pages 1-22, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4549-:d:602647
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    Citations

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    Cited by:

    1. María Teresa Villén & Maria Paz Comech & Eduardo Martinez Carrasco & Aníbal Antonio Prada Hurtado, 2022. "Influence of Negative Sequence Injection Strategies on Faulted Phase Selector Performance," Energies, MDPI, vol. 15(16), pages 1-19, August.
    2. Juan Dolado Fernández & Joaquín Eloy-Garcia & Santiago Arnaltes & Jose Luis Rodríguez-Amenedo, 2023. "Sequence Control Strategy for Grid-Forming Voltage Source Converters Based on the Virtual-Flux Orientation under Balanced and Unbalanced Faults," Energies, MDPI, vol. 16(7), pages 1-24, March.

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