Fast harmonics compensation in VSCs connected to the grid by synchronous-frame generalized integrators

Author

Blanco, E. ; Bueno, E. ; Espinosa, F. ; Cobreces, S. ; Rodríguez, F.J. ; Ruiz, M.A.

Author_Institution

Dept. of Electron., Alcala Univ., Madrid, Spain

Volume

2

fYear

2005

fDate

20-23 June 2005

Firstpage

751

Abstract

The drawback of using a VSC as an interface with the grid is its sensitivity in presence of system disturbances as grid voltage harmonics. In this paper, a new current controller structure to harmonics compensation is proposed. It consists of using two control loops. The first is based in synchronous PI working in rotating coordinates with DC components; and the second uses synchronous-frame generalized integrators (Gl) tuned to the harmonics frequency. The proposed algorithm temporal responses under grid voltage harmonics are presented, and also, the proposed digital control electronics system, where the algorithms run, is shown.

Keywords

PI control; electric current control; power convertors; power system faults; power system harmonics; VSC; current controller structure; digital control electronics system; fast harmonics compensation; harmonics frequency; synchronous PI; synchronous-frame generalized integrators; system disturbances; voltage harmonics; Active filters; Converters; Digital control; Frequency; Power conversion; Power harmonic filters; Pulse width modulation; Steady-state; Voltage control; Voltage fluctuations;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2005. ISIE 2005. Proceedings of the IEEE International Symposium on

Conference_Location

Dubrovnik, Croatia

Print_ISBN

0-7803-8738-4

Type

conf

DOI

10.1109/ISIE.2005.1529009

Filename

1529009