Assessment of the harmonic currents generated by single-phase nonlinear loads

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dc.creatorRenato Senra
dc.creatorWallace do Couto Boaventura
dc.creatorEduardo Mendes
dc.date.accessioned2025-04-07T13:57:20Z
dc.date.accessioned2025-09-08T22:48:42Z
dc.date.available2025-04-07T13:57:20Z
dc.date.issued2017
dc.identifier.doi10.1016/j.epsr.2017.02.028
dc.identifier.issn0378-7796
dc.identifier.urihttps://hdl.handle.net/1843/81332
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofElectric power systems research
dc.rightsAcesso Restrito
dc.subjectEletrodinâmica
dc.subject.otherSteady-state current from nonlinear loads under harmonic polluted voltage supply
dc.subject.otherVariable Norton admittance modeling including the voltage angle dependency
dc.subject.otherExperimental results using fluorescent lamps submitted to distorted voltage supply
dc.subject.otherproposes a methodology for calculating the steady-state current spectrum generated by one or more nonlinear loads, under harmonic polluted non-ideal voltage supply
dc.subject.otherStarting from a fixed current spectrum, based on simple equations, a variable Norton admittance modeling is used to iteratively adjust each harmonic current component according to the voltage supply harmonic distortion, including the voltage angle dependency
dc.titleAssessment of the harmonic currents generated by single-phase nonlinear loads
dc.typeArtigo de periódico
local.citation.epage279
local.citation.spage272
local.citation.volume147
local.description.resumoThe problem of computing the harmonic currents produced by nonlinear loads has been constantly raised in the field of power quality. Such a problem becomes even more difficult when the voltage supply has already been polluted with harmonics. This context is further investigated in this work by presenting measurement results showing how the harmonic currents generated by a nonlinear load can depend on the distortion parameters of the voltage supply. When dealing with the representation of a nonlinear load through admittances, whose magnitude and angle depend on the harmonic content of the supply voltage, the tensor based procedures are accurate enough when the load admittance loci yields to a circle, which is usually the case for simulations. However, this modeling approach does not fit all types of loads. To account for the admittance variation due to the dependency on the supply voltage angle, this work introduces a special procedure involving a collection of admittance matrices, which is suitable for any load modeling, as it can use data even from measurement. The method is based on the iterative calculation using an updated Norton admittance, which takes into account the magnitude and angle voltage dependency behavior of the nonlinear load. Once the parameters from the electrical system and loads are gathered, the method provides a deterministic way of assessment the line current produced by a single load or a group of these specific loads. Besides the mentioned measurements, numerical calculations comparing results from time-domain simulation and the proposed methodology are presented for validation purposes.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICA
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0378779617300846

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