Complex State-Space Current Controller for Grid-Connected Converters with an LCL Filter

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2009

Autores

Carlos Ramos (Autor) FEUP; António Pina Martins (Autor) FEUP; Adriano Carvalho (Autor) FEUP

Ata de Conferência Internacional

Título: IECON: 2009 35TH ANNUAL CONFERENCE OF IEEE INDUSTRIAL ELECTRONICS, VOLS 1-6

Páginas: 262-267

35th Annual Conference of the IEEE-Industrial-Electronics-Society (IECON 2009)

Porto, PORTUGAL, NOV 03-05, 2009

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 11 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-003-QEE

DOI: 10.1109/iecon.2009.5414938

Abstract (EN): Grid-connected voltage source converters using an LCL filter offer reduced harmonics in the grid current. The stem modeling results in a multivariable system with cross coupling. Additionally, the system contains three state-variables instead of the one occurring in the case of grid connection using only one inductance. All the three variables must be measured or estimated. Also, the LCL filter has a resonant frequency that can cause unstable behavior. This variable resonant frequency is usually considered using a damping resistor or active damping. The main purpose of the paper is to present a methodology to design a current controller based on the concept of a controller in the complex domain. The complex controller is obtained using the pole placement method and it uses a state observer in order to only measure the grid current as state variable. The simulation results presented clearly demonstrate the validity of the design approach.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6