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A vector control technique for medium-voltage multilevel inverters

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4 Author(s)
Rodriguez, J. ; Departamento de Electronica, Univ. Tecnica Federico Santa Maria, Valparaiso, Chile ; Moran, L. ; Correa, P. ; Silva, C.

This paper presents a switching strategy for multilevel cascade inverters, based on the space-vector theory. The proposed switching strategy generates a voltage vector with very low harmonic distortion and reduced switching frequency. This new control method is an attractive alternative to the classic multilevel pulsewidth modulation techniques considering the following aspects: (1) voltage and current total harmonic distortion; (2) range of linear operation; and (3) number of commutations.

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Industrial Electronics, IEEE Transactions on  (Volume:49 ,  Issue: 4 )