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

Autor(es)

Marafao, Fernando Pinhabel ^[1] ; Brandao, Danilo Iglesias ^[2] ; Costabeber, Alessandro ^[3] ; Morales Paredes, Helmo Kelis ^[1]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: IET RENEWABLE POWER GENERATION; v. 9, n. 2, p. 154-165, MAR 2015.
• Citações Web of Science: 17

Resumo

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)

• 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: 12/14014-0 - Sistemas inteligentes distribuídos autônomos de energia
• Beneficiário: Fernando Pinhabel Marafão
• Modalidade de apoio: Bolsas no Exterior - Pesquisa