A Simple Space Vector PWM Generation Scheme for Any General n-Level Inverter

作者：Mohamed Aneesh A S^*; Gopinath Anish; Baiju M R

来源：IEEE Transactions on Industrial Electronics, 2009, 56(5): 1649-1656.

DOI：10.1109/TIE.2008.2011337

• Multilevel inverter
• open-end winding
• reverse mapping
• space vector pulsewidth modulation (SVPWM)

This paper proposes a generalized method for the generation of space vector pulsewidth modulation (SVPWM) signals for multilevel inverters. In the proposed method, the actual sector containing the tip of the reference space vector need not be identified. A method is presented to identify the center of a subhexagon containing the reference space vector. Using the center of the subhexagon, the reference space vector is mapped to the innermost subhexagon, and the switching sequence corresponding to a two-level inverter is determined. A new technique is proposed in this paper, by which these two-level vectors are translated to the switching vectors of the multilevel inverter by adding the center of the subhexagon to the two-level vectors. The proposed method can be extended to any n-level inverter, and a generalized algorithm is proposed. The scheme is explained for a five-level inverter, and experimental results are presented for a three-level inverter.

• 出版日期2009-5