DocumentCode :
3241143
Title :
A new control method for obtaining reference currents of shunt active power filters in unbalanced and non-sinusoidal conditions
Author :
Abellán, Antonio ; Garcerá, Gabriel ; Benavent, Jose M.
Author_Institution :
Dept. de Ingenieria Electron., Univ. Politecnica de Madrid, Spain
Volume :
2
fYear :
1999
fDate :
1999
Firstpage :
831
Abstract :
Shunt active power filters are used to eliminate the current harmonics and to improve the power factor in systems with nonlinear loads. At the present time, different methods exist to control active power filters. Some of them are based on instantaneous reactive power theory and others are based on the synchronous reference frame using Park´s transformation. The purpose of this paper is to present a new control method of shunt active power filters in unbalanced systems, both in load currents and in AC supply voltage, with a high contents of harmonics. The method is based on the time-domain analysis carried out by P. Filipski (1980). With this control method, one can make that the set formed by the nonlinear load and the shunt power filter behaves every time like a resistance, UPF (with unity power factor), or that the current absorbed by the set is perfectly sinusoidal, by simply acting on a switch. The system has been simulated for different load and line conditions. Waveforms of the line currents are shown, with their harmonic distortion contents
Keywords :
active filters; control system analysis; control system synthesis; electric current control; harmonic distortion; load (electric); power factor correction; power harmonic filters; power system harmonics; Park´s transformation; current harmonics elimination; instantaneous reactive power theory; line current waveforms; nonsinusoidal conditions; power factor improvement; shunt active power filters; synchronous reference frame; time-domain analysis; unbalanced conditions; Active filters; Control systems; Harmonic distortion; Power filters; Power harmonic filters; Power system harmonics; Reactive power; Switches; Time domain analysis; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics, 1999. ISIE '99. Proceedings of the IEEE International Symposium on
Conference_Location :
Bled
Print_ISBN :
0-7803-5662-4
Type :
conf
DOI :
10.1109/ISIE.1999.798721
Filename :
798721
Link To Document :
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