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A new PWM control technique applied to three-phase shunt hybrid power filter

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3 Author(s)
Rahmani, S. ; Ecole Superieure des Sci. et Techniques de Tunis, Tunisia ; Al-Haddad, K. ; Fnaiech, F.

This paper presents a new PWM control technique applied to a three-phase shunt hybrid power filter (SHPF). An appropriate control strategy for removing harmonics caused by nonlinear loads is developed. The PWM control technique adopted is based on two comparisons of a triangular high frequency carrier signal and the source harmonic currents. This harmonic signal namely +ϑ and its opposite value -ϑ are used, at the same instant, in the comparison process to generate the gate signals for the semiconductor devices. By using the averaging technique, the direct consequence of using this new PWM technique is that the transfer function of the active power filter (APF) becomes. a pure gain. Therefore the DC voltage regulator as well as the filter current controllers becomes easier to design. The Matlab PSB simulation results of the proposed technique highlight the performance of the controllers in terms of THD reduction and power factor correction.

Published in:

IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]  (Volume:1 )

Date of Conference:

5-8 Nov. 2002