A DFT-based Phasor Estimation Method for Power Electronics Converter Control and Protection under Strong Grid Voltage Perturbations

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

António Pina Martins (Autor) FEUP

Revista

Título: European Transactions on Electrical Power

Vol. 19 Nº 8

Páginas: 1082-1097

ISSN: 1430-144X

Editora: John Wiley & Sons

Indexação

ISI Web of Knowledge - 4 Citações

ISI Web of Science

Scopus - 3 Citações

INSPEC

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia electrotécnica ; Ciências Tecnológicas > Engenharia > Engenharia de controlo > Automação

Outras Informações

ID Authenticus: P-003-EMA

DOI: 10.1002/etep.284

Abstract (EN): Power conditioning systems like active filters, universal power flow controllers, static compensators, and dynamic voltage restorers, among other ones, need accurate synchronization circuits capable of dealing with very different grid voltage perturbations. The DFT algorithm is one of best performers in phasor estimation, but is not perfect. The paper accurately describes the DFT errors under frequency variation, decaying DC components and harmonics, and analyzes the instantaneous phasor estimation, with absolute and recursive algorithms. Strong grid voltage perturbations, occurring in weak grids, especially in the grid connection of renewable energies, demand for a DFT-based robust estimation method. The proposed method, as demonstrated by extensive simulations, is capable of handling general grid voltage perturbations, imposing a compromise between dynamic response and accuracy. Also, its advantage over two other frequently used methods is demonstrated by comparative results.

Idioma: Inglês

Tipo (Avaliação Docente): Científica