Multidimensional modulation technique for cascaded multilevel converters

作者：Leon Jose Ignacio^*; Kouro Samir; Vazquez Sergio; Portillo Ramon; Franquelo Leopoldo Garcia; Carrasco Juan Manuel; Rodriguez Jose

来源：IEEE Transactions on Industrial Electronics, 2011, 58(2): 412-420.

DOI：10.1109/TIE.2010.2048833

• Cascaded H-bridge converter
• Cascaded multilevel converter
• DC voltage
• Feed-Forward
• High-power
• Medium voltage
• modulation algorithm
• Modulation methods
• Modulation techniques
• Multi-dimensional control
• Multi-dimensional modulations
• Possible solutions
• Switching sequence
• Switching time

Multilevel cascaded H-bridge converters have found industrial application in the medium-voltage high-power range. In this paper, a generalized modulation technique for this type of converter based on a multidimensional control region is presented. Using the multidimensional control region, it is shown that all previous modulation techniques are particularized versions of the proposed method. Several possible solutions to develop a specific implementation of the modulation method are addressed in order to show the potential possibilities and the flexibility of the proposed technique. In addition, a feedforward version of this technique is also introduced to determine the switching sequence and the switching times, avoiding low harmonic distortion with unbalanced dc voltages. Experimental results are shown in order to validate the proposed concepts.

• 出版日期2011
• 单位University of Seville