Three-dimensional space-vector modulation algorithm for four-leg multilevel converters using abc coordinates
Franquelo, L.G.
Prats, Ma.A.M.
Portillo, R.C.
Galvan, J.I.L.
Perales, M.A.
Carrasco, J.M.
Diez, E.G.
Jimenez, J.L.M.
Dept. of Electron. Eng., Univ. of Seville, Spain;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: April 2006
Volume: 53,
Issue: 2
On page(s): 458- 466
ISSN: 0278-0046
INSPEC Accession Number: 8875904
Digital Object Identifier: 10.1109/TIE.2006.870884
Current Version Published: 2006-04-03
Abstract
In this paper, a novel three-dimensional (3-D) space-vector algorithm for four-leg multilevel converters is presented. It can be applied to active power filters or neutral-current compensator applications for mitigating harmonics and zero-sequence components using abc coordinates (referred from now on this paper as natural coordinates). This technique greatly simplifies the selection of the 3-D region where a given voltage vector is supposed to be found. Compared to a three-level modulation algorithm for three-leg multilevel converters, this algorithm does not increase its complexity and the calculations of the active vectors with the corresponding switching time that generate the reference voltage vector. In addition, the low-computational cost of the proposed algorithm is always the same and it is independent of the number of levels of the converter.
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