Feed-forward active attenuation of low frequency common-mode voltages in DC microgrids

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dc.creatorThiago R. Oliveira
dc.creatorSeleme Isaac Seleme Júnior
dc.creatorPedro F. Donoso-Garcia
dc.date.accessioned2025-03-31T17:06:40Z
dc.date.accessioned2025-09-09T00:21:08Z
dc.date.available2025-03-31T17:06:40Z
dc.date.issued2017
dc.identifier.doi10.1109/COBEP.2017.8257352
dc.identifier.urihttps://hdl.handle.net/1843/81133
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.rightsAcesso Restrito
dc.subjectEnergia - Fontes alternativas
dc.subjectSistemas elétricos de potência
dc.subject.otherMicrogrids , Attenuation , Wires , Grounding , Equivalent circuits , Power conversion
dc.subject.otherCommon-mode voltage , Dc microgrids , Dc power distribution , Safety
dc.subject.otherLow Voltage , Common-mode Voltage , Dc Microgrid , Frequency Components , Electric Current , DC Power , Common Mode , Storage Devices , Differential Modulation , Electric Shock , Low-frequency Components , Utility Grid , Lack Of Isolation , Compensation Technique , Galvanic Isolation , Feedforward Compensation , Ground Fault , Active Compensation , High Frequency Components , Dc-link Voltage , Phase-locked Loop , Compensation Signal , High Frequency Noise , Peak Voltage , Switching Frequency , DC Link , Dc Side , Distribution System
dc.titleFeed-forward active attenuation of low frequency common-mode voltages in DC microgrids
dc.typeArtigo de evento
local.citation.epage6
local.citation.spage1
local.description.resumoDC microgrids are regarded as a pathway to substantially enhance buildings energy efficiency and improve integration with distributed generation and storage devices. In low power DC power systems, the lack of galvanic isolation at the utility grid interface will generate a common-mode (CM) path that will provide a low impedance circuit for DC bus ground faults and electric shock currents. Therefore the mitigation of CM voltages in the microgrid DC bus is important to contribute to a safer environment for users. In this paper, the CM voltage spectrum of DC microgrids with single-phase grid interface will be analysed and solutions to attenuate it will be discussed. A feed-forward active compensation technique is proposed to reduce the magnitude of low frequency components in the CM voltage spectrum. Experimental results show that this technique can attenuate the CM voltage to non-dangerous magnitudes without interfering with the microgrid differential mode behaviour.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICA
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.initialsUFMG
local.url.externahttps://ieeexplore.ieee.org/document/8257352

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