6Qualitative space vector pulse width modulation algorithm for multilevel inverters
In this chapter, a qualitative space vector pulse width modulation (SVPWM) algorithm is proposed and implemented for neutral point-clamped (NPC) multilevel inverter. In this method, the duty cycles of the reference voltage vectors are corrected accordingly to identify the location of the reference voltage vector in each region. The appropriate switching sequence of the region and calculation of the switching ON times for each state are estimated. This scheme can be extended to high-level inverters as well. This algorithm has been discussed in detail, and results have been presented and analyzed for two, three, four, five, six and seven-level inverters. The total ...
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