DocumentCode :
3104586
Title :
A Comparative Study of Two PWM Techniques for Single-Phase Shunt Active Power Filters Employing Direct Current Control Strategy
Author :
Rahmani, Saeid ; Al-Haddad, Kamal ; Kanaan, Hadi Y. ; Fnaiech, Farhat
Author_Institution :
Energy Conversion & Power Electron., Ecole de Technol. Superieure, Montreal, Que.
fYear :
2005
fDate :
16-16 June 2005
Firstpage :
2758
Lastpage :
2763
Abstract :
This paper presents an experimental evaluation of two pulse-width-modulation (PWM) control techniques applied to a single phase shunt active power filter (SPSAPF). A direct current control strategy is implemented using a standard PWM (S-PWM) and a modified PWM (M-PWM) in order to compensate the current harmonics and the reactive power generated by a nonlinear load. The M-PWM control technique is based on two comparisons of a triangular high frequency carrier signal with a low frequency modulating signal (that represents the load current harmonics) and its opposite. The M-PWM shifts the first significant harmonics rays towards twice the switching frequency, and eliminates the spectral rays that are centered on the odd multiples of the switching frequency. Furthermore, it is shown that, for a M-PWM, the losses of the active filter are four times smaller than when using a S-PWM. Simulation and experimental results are presented to verify the better performance of the M-PWM over the S-PWM in terms of the total harmonic distortion (THD) of the source current and the reactive power compensation
Keywords :
active filters; compensation; electric current control; harmonic distortion; power harmonic filters; pulse width modulation; reactive power; PWM techniques; THD; active filter; current harmonics compensation; direct current control strategy; low frequency modulating signal; modified PWM; nonlinear load; reactive power compensation; single-phase shunt active power filters; spectral rays elimination; standard PWM; switching frequency; total harmonic distortion; Active filters; Current control; DC generators; Power generation; Power harmonic filters; Power system harmonics; Pulse width modulation; Reactive power control; Space vector pulse width modulation; Switching frequency;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
Type :
conf
DOI :
10.1109/PESC.2005.1582023
Filename :
1582023
Link To Document :
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