Algorithm for the virtual vectors modulation in three-level inverters with a voltage-balance control loop
Location: Germany
Publication date: 2005-09-14
Published in: European Power Electronics 2005, Dresden (Germany) - EPE 2005
ref. DOI: 10.1109/EPE.2005.219638

Local members

External members

Pou, J. , Sala, V. , Busquets-Monge, S. , Boroyevich,D.



The modulation strategy based on virtual vectors can remove the low-frequency voltage oscillation that appears in the neutral point of the three-level inverter. However, this strategy has no natural voltage balancing. This work presents a novel space-vector modulation algorithm that includes voltage-balancing control and therefore can remove any possible imbalance. Since the algorithm takes advantage of symmetry in the space-vector diagram, it can be processed quickly in a digital-signal processor. The proposed method is verified by simulation and experiment


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National public