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TitleEvaluation of two fundamental positive-sequence detectors for highly distorted and unbalanced systems
Author(s)Carneiro, H.
Exposto, Bruno Fernandes
Afonso, João L.
KeywordsActive power filters
Adaptive band-pass Filter
Issue dateOct-2011
JournalProceeding of the International Conference on Electrical Power Quality and Utilisation, Epqu
Abstract(s)This paper presents an evaluation of the performance of two different Positive-Sequence Detectors. This evaluation is made by comparing a PLL (Phase-Locked- Loop), combined with Lagrange Multipliers Method, with an Adaptive Filter. Both algorithms aim to detect the positive sequence at the fundamental frequency on a given three-phase system voltages or currents. The purpose of this evaluation is to assess the better Positive-Sequence Detector for custom power devices, such as Active Power Filters. The comparative analysis was based on the evaluation of a series of steady state performance arameters (phase and amplitude errors, THD and unbalance) and on the response time. The tests were made to study the behavior of both approaches when working with highly distorted and unbalanced signals. This work was carried out using the computer simulation tool PSCAD/EMTDC.
TypeConference paper
AccessOpen access
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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