Fault-tolerant utility interface power converter for low-voltage microgrids

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dc.creatorAlysson A. P. Machado
dc.creatorDanilo Iglesias Brandão
dc.creatorIgor Amariz Pires
dc.creatorBraz de J. C. Filho
dc.date.accessioned2025-03-26T15:23:13Z
dc.date.accessioned2025-09-08T23:13:21Z
dc.date.available2025-03-26T15:23:13Z
dc.date.issued2017
dc.identifier.doi10.1109/PEDG.2017.7972469
dc.identifier.urihttps://hdl.handle.net/1843/80947
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofIEEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
dc.rightsAcesso Restrito
dc.subjectSistemas de energia elétrica - Confiabilidade
dc.subjectSistemas de energia elétrica - Controle de qualidade
dc.subjectEnergia - Armazenamento
dc.subject.otherMicrogrids , Fault tolerance , Fault tolerant systems , Switches , Clamps , Voltage control
dc.subject.otherFault-tolerant , Microgrid , Power Quality , Reliability , Utility Interface
dc.subject.otherPower Conversion , Fault-tolerant , Low-voltage Microgrids , Utility Grid , Converter Topology , Point Of Common Coupling , Centralized Structure , Neutral Point Clamped , Normal Operation , Current Control , PI Controller , Smart Grid , Fault Diagnosis , External Devices , Grid Voltage , Fault-tolerant Control , Distributed Energy Resources , Fault Diagnosis Method , Nonlinear Load , Islanded Mode , Grid-connected Mode , Internal Device , Grid Fault
dc.titleFault-tolerant utility interface power converter for low-voltage microgrids
dc.typeArtigo de evento
local.description.resumoThe utility interface (UI) converter is a three-phase power conversion unit equipped with energy storage which governs the interaction between the utility grid and the microgrid. The non-interruptive operation of UI is desired due to its several functions: (1) in grid-connected operation it performs as a voltage-supporting unit regulating the power flow through the microgrid point of common coupling, and compensating reactive power, unbalance and distortions caused by loads. (2) Whereas in islanded operation it performs as a voltage-forming unit and sets voltage amplitude and frequency for the entire microgrid. (3) Moreover, the UI ensures seamless transitions from grid-connected to islanded operation, actively decoupling the microgrid and the mains. Therefore, the UI plays a crucial role in centralized microgrid structures, and being a single-point of failure its safe and reliable operation entails directly the overall microgrid reliability. Thus, fault tolerant operation of such converter is a very important issue. The three-phase active neutral point clamped based power converter topology is capable to survive to successive open-circuit faults. Besides, it takes into account the advantages of the multilevel topologies: improved waveform quality, reduced filter size and equal loss distribution in the semiconductors. Simulation results are shown to analysis the operation of the fault-tolerant UI under faults.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.initialsUFMG
local.url.externahttps://ieeexplore.ieee.org/document/7972469

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