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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Brandao, Danilo Iglesias ; Guillardi, Jr., Hildo ; Morales-Paredes, Helmo K. ; Marafao, Fernando Pinhabel ; Pomilio, Jose Antenor
Total Authors: 5
Document type: Journal article
Source: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS; v. 63, n. 12, p. 7743-7753, DEC 2016.
Web of Science Citations: 7
Abstract

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)

FAPESP's process: 13/08545-6 - Study of local and/or cooperative control techniques for low voltage smart microgrids
Grantee:Helmo Kelis Morales Paredes
Support Opportunities: Regular Research Grants
FAPESP's process: 12/24309-8 - Study and development of distributed photovoltaic systems aimed at cooperative operation in microgrids
Grantee:Danilo Iglesias Brandão
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 14/23691-1 - Experimental platform for electric smart-grids studies: sources, converters and control
Grantee:Jose Antenor Pomilio
Support Opportunities: Scholarships abroad - Research