Predictive current control of a four-wire, active power filter for an unbalanced utility load of metro railway

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Abstract

This paper presents a typical topology of medium-power, active power filter that utilizes a one-step ahead current controller to improve the power quality of a four-wire, unbalanced nonlinear load without using an additional switching limb to regulate the neutral current. In contrast to commonplace control techniques of shunt active filters, the one-step ahead strategy, or predictive control method of the presented circuit, determines the switching of the active filter and, thereby, the generation of its currents, such that the supply current waveforms become virtually sinusoidal waves, being its THD -% when the filter is operated with a 2kW load. The principle of operation of the switching control scheme is analysed, using a space vector technique for simple implementation together with a description of its practical development, showing experimental results obtained with a 2kW prototype.

Original languageEnglish
Title of host publicationProceedings - 2015 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages79-84
Number of pages6
ISBN (Electronic)9781509017171
DOIs
StatePublished - 29 Jan 2016
EventIEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2015 - Valparaiso, Chile
Duration: 5 Oct 20156 Oct 2015

Publication series

NameProceedings - 2015 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2015

Conference

ConferenceIEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics, PRECEDE 2015
Country/TerritoryChile
CityValparaiso
Period5/10/156/10/15

Keywords

  • Predictive current controller
  • Shunt active filter
  • Space Vector

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