Download Sélectivité et anisotropie des Filtres Spatiaux :

Fuzzy Logic Controller for Three-phase
Shunt Active Filter Compensating
Harmonics and Reactive Power
Simultaneously
L. Zellouma and S. Saad,
Laboratoire des Systèmes Electromécaniques, University of
Badji Mokhtar-Annaba-Algeria
Email: [email protected]
Abstract
This paper presents a fuzzy logic as a control technique
applied to a voltage source inverter operating as an active
filter. This active filter compensates harmonic current and
reactive power of nonlinear loads simultaneously. The
proposed scheme uses a pulse width modulation (PWM)
technique to generate the switching signals to the active filter,
p-q theory for harmonic current identification and fuzzy logic
for active filter current and DC capacitor voltage control. The
operation and design of power and control circuit of active
filter are analyzed and discussed. The obtained results using
MATLAB power system blocks showed that source current is
sinusoidal and in phase with source voltage. The proposed
solution has achieved a low total harmonic distortion
demonstrating the effectiveness of the presented method.
Key words: Fuzzy logic control, Harmonics, Reactive
powercompensation, PWM control, Shunt active power filter.