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Three-phase, three-wire, five-level cascaded shunt active filter for power conditioning, using two different space vector modulation techniques

Massoud, A. and Finney, S.J. and Cruden, Andrew and William, B.W. (2007) Three-phase, three-wire, five-level cascaded shunt active filter for power conditioning, using two different space vector modulation techniques. IEEE Transactions on Power Delivery, 22 (4). pp. 2349-2361. ISSN 0885-8977

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Abstract

The three-phase, three-wire, five-level cascaded Inverter is used as a medium-voltage shunt active power filter. The capacitor voltage-control technique used as a harmonic current extraction method for the two-level inverter is extended to the five-level shunt active power filter, with a technique proposed for balancing capacitor voltages. Predictive current control based on the supply current (not the active filter current) is employed. Two different space vector modulation (SVM) techniques viz., phase-shifted SVM and hybrid SVM, are used for multilevel inverter pulsewidth-modulation generation. The proposed five-level shunt active power filter is validated by simulation and practically for both modulation techniques. The proposed technique results in the same software and hardware requirements for any m-level inverter.