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

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.

Citation

Brandão, D. I., Parades, H. K., Costabeber, A., & Marafão, F. P. (2016). Flexible active compensation based on load conformity factors applied to non-sinusoidal and asymmetrical voltage conditions. IET Power Electronics, 9(2), 356-364. https://doi.org/10.1049/iet-pel.2015.0086

• Journal Article Type: Article
• Acceptance Date: Jul 4, 2015
• Publication Date: Feb 10, 2016
• Deposit Date: May 26, 2016
• Publicly Available Date: May 26, 2016
• Journal: IET Power Electronics
• Electronic ISSN: 1755-4543
• Publisher: Institution of Engineering and Technology (IET)
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 2
• Pages: 356-364
• DOI: https://doi.org/10.1049/iet-pel.2015.0086
• Keywords: Electric current control; Iterative learning control; Power convertors; Power filters; Smart power grids; L; oad conformity factors; Grid-tied converters; Flexible active compensation; Current controller; Conformity factors; Orthogonal instantaneous curre
• Public URL: https://nottingham-repository.worktribe.com/output/776513
• Publisher URL: http://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.0086
• Additional Information: This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.; ; Copyright 2016 Institution of Engineering and Technology