A study of a three-phase four-wire shunt active power filter for harmonics mitigation

Maciel, Luis Fernando Ayala and Monroy Morales, José Luis and Campos-Gaona, David and Marroquín Pimentel, Juan Gabriel; (2019) A study of a three-phase four-wire shunt active power filter for harmonics mitigation. In: 2018 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC). IEEE, Piscataway, NJ, pp. 1-6. ISBN 9781538659359 (https://doi.org/10.1109/ROPEC.2018.8661416)

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Abstract

The electrical power quality in three phase four wire systems, feeding nonlinear loads, can be improved by using active power filters (APF) in order to mitigate the total harmonic distortion. Harmonic currents and voltages produced by single phase, non-linear loads, which are connected phase to neutral in a three phase, four wire system, are third order, zero sequence harmonics. These third order, zero sequence harmonic currents, unlike positive and negative sequence harmonic currents, do not cancel but add up arithmetically at the neutral bus, and can be greater than the current of each of the phases. The danger that arises is an excessive overheating of the neutral, since there is no circuit breaker in this conductor, which limits the current, as occurs with the phase conductors. An excessive current in the neutral can also cause an excessive voltage difference between the neutral conductor and ground. This paper presents the theory and design of the control system used to mitigate harmonic problems in three-phase four-wire systems based on a split capacitor topology. Due to split capacitor topology has midpoint between the capacitors, this point can be used for the neutral return path, and thus, the entire neutral current flows through the DC bus capacitors reducing the number of switching devices. Simulation results are shown to validate the proposed procedures.

  • Item type:Book Section
    ID code:67309
    Dates:
    Date
    Event
    7 March 2019
    Published
    3 September 2018
    Accepted
    Notes:© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:14 Mar 2019 14:27
    Last modified:21 Apr 2024 12:01
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/67309
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