Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Capacitor Condition Monitoring Method for Low-Capacitance StatComs: An Online Approach Using the Inherent Second-Harmonic Oscillations

  • Identification data

    Identifier: imarina:9324063
  • Authors:

    Ramos, ER
    Leyva, R
    Liu, QX
    Farivar, GG
    Pou, J
    Ieee Transactions On Power Electronics
    10.1109/TPEL.2023.3286447
    Ieee Transactions On Power Electronics. 38 (9): 10559-10562
  • Others:

    Author, as appears in the article.: Ramos, ER; Leyva, R; Liu, QX; Farivar, GG; Pou, J
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Leyva Grasa, Ramon
    Keywords: Voltage measurement Static compensator (statcom) Reliability Oscillators Monitoring Frequency conversion Estimation Equivalent series resistance (esr) Diagnostics Dc-link capacitor Condition monitoring Cascaded h-bridge (chb) Capacitors Capacitance Automatic voltage control static compensator (statcom) reliability estimation equivalent series resistance (esr) diagnostics dc-link capacitor condition monitoring
    Abstract: The cascaded H-bridge low-capacitance static compensator (LC-StatCom) deliberately reduces the capacitor size while allowing large oscillations in capacitor voltages. When a capacitor deteriorates, its capacitance decreases or/and its equivalent series resistance (ESR) increases, compromising StatCom performance and safety. For this reason, the condition monitoring of the capacitors is important to schedule maintenance before failure. This letter introduces a cost-effective and nonintrusive method to monitor the condition of capacitors online. The proposed method offers real-time monitoring without requiring additional hardware or signal injection. The method uses averaged low-frequency signals instead of instantaneous high-frequency signals that can be corrupted by undesired high-frequency noise. Specifically, the method takes advantage of the inherent twice-fundamental-frequency oscillations on the capacitor voltage and current to identify the ESR and capacitance values. The method takes into account the influence of antialiasing filters required for sampling process. The letter shows experimental results that validate the fast and accurate performance of the proposed capacitor condition monitoring.
    Thematic Areas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
    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/10153678
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Ieee Transactions On Power Electronics. 38 (9): 10559-10562
    APA: Ramos, ER; Leyva, R; Liu, QX; Farivar, GG; Pou, J (2023). Capacitor Condition Monitoring Method for Low-Capacitance StatComs: An Online Approach Using the Inherent Second-Harmonic Oscillations. Ieee Transactions On Power Electronics, 38(9), 10559-10562. DOI: 10.1109/TPEL.2023.3286447
    Article's DOI: 10.1109/TPEL.2023.3286447
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Voltage measurement
    Static compensator (statcom)
    Reliability
    Oscillators
    Monitoring
    Frequency conversion
    Estimation
    Equivalent series resistance (esr)
    Diagnostics
    Dc-link capacitor
    Condition monitoring
    Cascaded h-bridge (chb)
    Capacitors
    Capacitance
    Automatic voltage control
    static compensator (statcom)
    reliability
    estimation
    equivalent series resistance (esr)
    diagnostics
    dc-link capacitor
    condition monitoring
    Interdisciplinar
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
    Ciências agrárias i
    Ciência da computação
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