Space-vector pulse-width modulation algorithm for multilevel voltage source inverters based on matrix transformation and including operation in the over-modulation region.

Autor: Weidong Jiang, Wangmin Li, Zhiqing Wu, Yangyang She, Ziran Tao
Předmět:
Zdroj: IET Power Electronics (Wiley-Blackwell); 2014, Vol. 7 Issue 12, p2925-2933, 9p, 4 Diagrams, 7 Graphs
Abstrakt: Multilevel voltage source inverters are most promising when employed in high-power and high-voltage applications. As the number of inverter levels increases, the algorithm of space-vector pulse-width modulation (SVPWM) becomes increasingly complex. Based on the intrinsic relationship between SVPWM algorithms for 2-level inverters and those for arbitrary-level inverters, here a novel SVPWM algorithm is proposed for an arbitrary-level inverter. Considering that the nearest three vectors are used to synthesise the reference vector, the on-time of the voltage vector for an arbitrary-level inverter can be acquired from that for a 2-level inverter via the use of a linear transformation. This algorithm is verified through simulation and experiments, with the latter proving that the proposed algorithm can meet the real-time requirements of multilevel inverters. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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