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dc.contributor.authorCorrea Monteiro, Luis Fernandopor
dc.contributor.authorAredes, Mauriciopor
dc.contributor.authorPinto, J. G.por
dc.contributor.authorExposto, Brunopor
dc.contributor.authorAfonso, João L.por
dc.description.abstractThis study presents control algorithms for a new unified power quality conditioner (UPQC) without the series transformers that are frequently used to make the insertion of the series converter of the UPQC between the power supply and the load. The behaviour of the proposed UPQC is evaluated in presence of voltage imbalances, as well as under non-sinusoidal voltage-and current conditions. The presented algorithms derive from the concepts involving the active and non-active currents, together with a phase-locked-loop circuit. Based on these real-time algorithms, and considering the proposed hardware topology, the UPQC is able to compensate the harmonic components of the voltages and currents, correct the power factor, and keep the load voltages regulated, all of this in a dynamic way, responding instantaneously to changes in the loads or in the electrical power system. The control algorithms were distributed in a two-DSP digital control architecture, without any communication between them. Consequently, can be increased the sampling frequency of the acquired voltages and currents and improve the UPQC performance. Furthermore, some constraints of the proposed UPQC are evidenced, particularly when the main voltages are imbalanced. Simulation and experimental results are presented to verify the UPQC performance under transient and steady state conditions.por
dc.publisherInstitution Engineering Technology (IET)por
dc.subjectelectric current controlpor
dc.subjectpower supply qualitypor
dc.subjectpower convertorspor
dc.subjectphase locked loopspor
dc.subjectpower system harmonicspor
dc.subjectpower factor correctionpor
dc.subjectload regulationpor
dc.subjectvoltage controlpor
dc.subjectpower system controlpor
dc.subjectdigital controlpor
dc.subjectdigital signal processing chipspor
dc.subjectnonactive currentpor
dc.subjectactive currentpor
dc.subjectseries transformerpor
dc.subjectunified power quality conditionerpor
dc.subjectseries converterpor
dc.subjectpower supplypor
dc.subjectvoltage imbalancepor
dc.subjectnonsinusoidal voltage-and current conditionpor
dc.subjectphase-locked-loop circuitpor
dc.subjectharmonic component compensationpor
dc.subjectpower factor correctionpor
dc.subjectload voltage regulationpor
dc.subjectelectrical power systempor
dc.subjectDSP digital control architecturepor
dc.titleControl algorithms based on the active and non-active currents for a UPQC without series transformerspor
dc.subject.wosScience & Technology-
sdum.journalIET Power Electronicspor
Appears in Collections:CAlg - Artigos em revistas internacionais/Papers in international journals

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