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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.)

Multi-task control strategy for grid-tied inverters based on conservative power theory

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Author(s):
Marafao, Fernando Pinhabel [1] ; Brandao, Danilo Iglesias [2] ; Costabeber, Alessandro [3] ; Morales Paredes, Helmo Kelis [1]
Total Authors: 4
Affiliation:
[1] UNESP Univ Estadual Paulista, Grp Automat & Integrated Syst, Sorocaba, SP - Brazil
[2] Univ Estadual Campinas, Dept Syst & Energy, Campinas, SP - Brazil
[3] Univ Nottingham, Dept Elect & Elect Engn, Nottingham NG7 2RD, NG - England
Total Affiliations: 3
Document type: Journal article
Source: IET RENEWABLE POWER GENERATION; v. 9, n. 2, p. 154-165, MAR 2015.
Web of Science Citations: 17
Abstract

ln recent years, the concept of decentralising power generation through the deployment of distributed generators (DGs) has been widely accepted and applied, driven by the growing market of renewable energy sources. These DGs are normally equipped with a switching power interface, acting as front end with the grid. This paper proposes a multi-task control strategy for distributed generation systems that simultaneously allows the DG to inject the available energy, as well as to work as a voltage drop compensator or as an active power filter, mitigating load current disturbances and improving power quality of the grid. The main contribution of the proposed system, with respect to other solutions in the literature, is that the proposed control loops are based on the Conservative Power Theory decompositions. This choice provides decoupled power and current references for the inverter control, offering a very flexible, selective and powerful control strategy for the DG. The paper also discusses the choice of the current waveform for injecting/absorbing active power into/from the grid, and both sinusoidal and resistive references have been compared in terms of damping capability. Finally, simulation and experimental results are provided in order to validate the proposed functionalities of the DG control system. (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: 12/14014-0 - Autonomous and intelligent distributed energy systems
Grantee:Fernando Pinhabel Marafão
Support Opportunities: Scholarships abroad - Research