title: A new balancing three level three dimensional space vector modulation strategy for three level neutral point clamped four leg inverter based shunt active power filter controlling by nonlinear back stepping controllers.
abstract: In this paper is proposed a new balancing three-level three dimensional space vector modulation (B3L-3DSVM) strategy which uses a redundant voltage vectors to realize precise control and high-performance for a three phase three-level four-leg neutral point clamped (NPC) inverter based Shunt Active Power Filter (SAPF) for eliminate the source currents harmonics, reduce the magnitude of neutral wire current (eliminate the zero-sequence current produced by single-phase nonlinear loads), and to compensate the reactive power in the three-phase four-wire electrical networks. This strategy is proposed in order to gate switching pulses generation, dc bus voltage capacitors balancing (conserve equal voltage of the two dc bus capacitors), and to switching frequency reduced and fixed of inverter switches in same times. A Nonlinear Back Stepping Controllers (NBSC) are used for regulated the dc bus voltage capacitors and the SAPF injected currents to robustness, stabilizing the system and to improve the response and to eliminate the overshoot and undershoot of traditional PI (Proportional-Integral). Conventional three-level three dimensional space vector modulation (C3L-3DSVM) and B3L-3DSVM are calculated and compared in terms of error between the two dc bus voltage capacitors, SAPF output voltages and THDv, THDi of source currents, magnitude of source neutral wire current, and the reactive power compensation under unbalanced single phase nonlinear loads. The success, robustness, and the effectiveness of the proposed control strategies are demonstrated through simulation using Sim Power Systems and S-Function of MATLAB/SIMULINK.
authors.affiliation: ICEPS Laboratory (Intelligent Control & Electrical Power Systems), Djillali Liabes University of Sidi Bel-Abbes, Algeria.
authors.forename: Ali
authors.initials: A
authors.lastname: Chebabhi
authors.affiliation: ICEPS Laboratory (Intelligent Control & Electrical Power Systems), Djillali Liabes University of Sidi Bel-Abbes, Algeria.
authors.forename: Mohammed Karim
authors.initials: MK
authors.lastname: Fellah
authors.affiliation: LPMRN Laboratory, Faculty of Sciences and Technology, University of Bordj Bou Arreridj, Algeria. Electronic address: Abdelhalim.kessal@yahoo.fr.
authors.forename: Abdelhalim
authors.initials: A
authors.lastname: Kessal
authors.affiliation: IREENA Laboratory (Institut de Recherche en Electronique et Electrotechnique de Nantes Atlantique), University of Nantes, France.
authors.forename: Mohamed F
authors.initials: MF
authors.lastname: Benkhoris
keywords: B3L-3DSVM; Balancing dc bus voltage capacitors; Nonlinear Back Stepping Controllers (NBSC); Output voltages; Reactive power; SAPF; SRF theory; THD; Three-level NPC four-leg inverter; Zero-sequence current