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Flexible active compensation based on load conformity factors applied to non-sinusoidal and asymmetrical voltage conditions

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Author(s):
Brandao, Danilo Iglesias ; Paredes, Helmo Kelis Morales ; Costabeber, Alessandro ; Marafao, Fernando Pinhabel
Total Authors: 4
Document type: Journal article
Source: IET POWER ELECTRONICS; v. 9, n. 2, p. 9-pg., 2016-02-10.
Abstract

This study proposes a flexible active power filter (APF) controller operating selectively to satisfy a set of desired load performance indices defined at the source side. The definition of such indices, and of the corresponding current references, is based on the orthogonal instantaneous current decomposition and conformity factors provided by the conservative power theory. This flexible approach can be applied to single- or three-phase APFs or other grid-tied converters, as those interfacing distributed generators in smart grids. The current controller is based on a modified hybrid P-type iterative learning controller which has shown good steady-state and dynamic performances. To validate the proposed approach, a three-phase four-wire APF connected to a non-linear and unbalanced load has been considered. Experimental results have been generated under ideal and non-ideal voltage sources, showing the effectiveness of the proposed flexible compensation scheme, even for weak grid scenarios. (AU)

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: 12/14014-0 - Autonomous and intelligent distributed energy systems
Grantee:Fernando Pinhabel Marafão
Support Opportunities: Scholarships abroad - Research
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