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Type: Artigo de Periódico
Title: Dead-beat Current Controller For Voltage-source Converters With Improved Large-signal Response
Author: Buso
S; Caldognetto
T; Brandao
Abstract: A digital dead-beat current controller for voltage source converters is presented in this paper. The control structure is specified in a digital hardware description language, synthesized, and deployed on a field-programmable gate array chip. By updating, with negligible computation delay, the duty cycle twice in a switching period, the reference current error is nulled in half a modulation period, so that the controller's small-signal bandwidth is maximized. In addition, due to a simple transient detection circuit, the large-signal response delay is reduced to a small fraction of the modulation period, which is determined by the chosen current signal oversampling rate. The controller can effectively support different voltage-source inverter applications, such as active filters, uninterruptible power supplies, microgrid distributed energy resource controllers, and dc-dc converter applications, including interface converters for renewable energy sources, laboratory battery chargers, and electronic welding machines.
Subject: Current Control
Dead-beat Control
Digital Control
Rights: fechado
Identifier DOI: 10.1109/TIA.2015.2488644
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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