Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Negative-Sequence Current Capability in Low-Capacitance Cascaded H-Bridge Static Compensators With Optimal Third-Harmonic Circulating Current Injection

  • Identification data

    Identifier: imarina:9290330
  • Authors:

    Ramos, ER
    Leyva, R
    Farivar, GG
    Townsend, CD
    Pou, J
  • Others:

    Author, as appears in the article.: Ramos, ER; Leyva, R; Farivar, GG; Townsend, CD; Pou, J
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Leyva Grasa, Ramon
    Keywords: Steady-state Statcom Oscillators Harmonic analysis Cascaded h-bridge (chb) Capacitors Capacitance Automatic voltage control thin dc capacitor steady-state static compensator (statcom) statcom star performance oscillators optimization methods multilevel converter linear programming index terms harmonic analysis converters compensation region of negative-sequence currents circulating current injection cascaded h-bridge (chb) capacitance automatic voltage control
    Abstract: The cascaded H-bridge (CHB) low-capacitance static compensator (LC-StatCom) has a limited negative-sequence current injection capability compared to a conventional CHB StatCom, due to the comparatively larger oscillations on the capacitor voltages. Placing limits on the ability to provide negative-sequence current to the grid for a given capacitor size is required to prevent overmodulation. This paper shows that these limits can be maximised by injecting an optimal third-harmonic circulating current. The effects of injecting the third-harmonic current on the capacitor voltages, both in balanced and unbalanced grid voltage conditions, are analyzed. Specifically, the procedure allows the knowledge of the potential capability of the LC-StatCom when injecting negative-sequence currents. The procedure is based on a linear programming approach. Although the procedure is applicable to any CHB StatCom, regardless of the submodule capacitor size, it is particularly important in LC-StatComs. To corroborate the proposed analysis, simulation and experimental results under balanced and unbalanced grid voltage conditions are presented.
    Thematic Areas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: ramon.leyva@urv.cat
    Author identifier: 0000-0001-6431-3688
    Record's date: 2024-07-20
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://ieeexplore.ieee.org/document/10003666
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Ieee Transactions On Power Electronics. 38 (4): 4544-4558
    APA: Ramos, ER; Leyva, R; Farivar, GG; Townsend, CD; Pou, J (2023). Negative-Sequence Current Capability in Low-Capacitance Cascaded H-Bridge Static Compensators With Optimal Third-Harmonic Circulating Current Injection. Ieee Transactions On Power Electronics, 38(4), 4544-4558. DOI: 10.1109/TPEL.2022.3233033
    Article's DOI: 10.1109/TPEL.2022.3233033
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Steady-state
    Statcom
    Oscillators
    Harmonic analysis
    Cascaded h-bridge (chb)
    Capacitors
    Capacitance
    Automatic voltage control
    thin dc capacitor
    steady-state
    static compensator (statcom)
    statcom
    star
    performance
    oscillators
    optimization methods
    multilevel converter
    linear programming
    index terms
    harmonic analysis
    converters
    compensation region of negative-sequence currents
    circulating current injection
    cascaded h-bridge (chb)
    capacitance
    automatic voltage control
    Interdisciplinar
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
    Ciências agrárias i
    Ciência da computação
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