An Improved Phase Disposition SPWM Strategy for Cascaded Multilevel Inverter

Jinbang Xu, Zhizhuo Wu, Xiao Wu, Fang Wu and Anwen Shen

Mathematical Problems in Engineering, 2014, vol. 2014, 1-9

Abstract:

The Carrier Phase Shifted (CPS) strategy is conventional for cascaded multilevel inverter, because it can naturally ensure all cascaded cells to output balanced power. However, in point of spectra of the output line voltage, CPS is suboptimal to Phase Disposition (PD) strategy, because the latter can not naturally ensure power balance. This paper presents an improved PD strategy, inspiration from the disposition of CPS strategy triangle carriers. Just reconstructing the triangle carriers of PD strategy, it can not only reserve the waveform quality of the line voltage to be optimal, but also naturally ensure the output power of each cascaded cells to be balanced.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlmpe:731574

DOI: 10.1155/2014/731574

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