Optimized Compensation of Unwanted Current Terms by AC Power Converters Under Generic Voltage Conditions

Autor(es)

Brandao, Danilo Iglesias ; Guillardi, Jr., Hildo ; Morales-Paredes, Helmo K. ; Marafao, Fernando Pinhabel ; Pomilio, Jose Antenor

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS; v. 63, n. 12, p. 7743-7753, DEC 2016.
• Citações Web of Science: 7

Resumo

This paper formulates an optimization-based algorithm for the compensation of unwanted current terms by means of distributed electronic power converters, such as active power filters and grid-connected inverters. The compensation goal consists in achieving suitable load conformity factors, defined at the source side and within a feasible power region in terms of the power converter capability. Based on the measured load quantities and on a certain objective function, the algorithm tracks the expected source currents, which are thereupon used to calculate proper scaling coefficients and, therefore, the compensation current references. It improves the power quality at the point of common coupling and enables full exploitation of distributed energy resources, increasing their efficiency. The compensation is based on a decoupled current decomposition and on an optimization-based algorithm. In this paper, the strategy is applied to nonlinear and unbalanced three-phase four-wire circuit, under nonsinusoidal and asymmetrical voltage conditions. The steady-state and dynamic behaviors have been analyzed by theoretical, simulation, and experimental results. Furthermore, the proposed approach is also compared to other compensation strategies showing its effectiveness. (AU)

• Processo FAPESP: 13/08545-6 - Estudo de técnicas de controle localizado e/ou cooperativo para microrredes inteligentes de baixa tensão
• Beneficiário: Helmo Kelis Morales Paredes
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/24309-8 - Estudo e desenvolvimento de sistemas fotovoltaicos distribuídos visando a operação cooperativa em microrredes de energia
• Beneficiário: Danilo Iglesias Brandão
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/23691-1 - Plataforma experimental para estudos de redes inteligentes de energia elétrica: fontes, conversores e controle
• Beneficiário: Jose Antenor Pomilio
• Modalidade de apoio: Bolsas no Exterior - Pesquisa