Multilevel multiphase space vector PWM algorithm applied to three-phase converters

Multilevel technology achieves high power ratings with voltage limited devices. Recently a new space vector pulse-width modulation algorithm for multilevel multiphase voltage source converters with low computational cost has been presented. This algorithm can be used with any number of phases; therefore, it can be also used with classical three-phase topologies. In this paper, the multiphase algorithm is particularized for three-phase converters and compared with an existing multilevel space vector modulation technique. Finally, the algorithm is implemented in a low cost FPGA and it is tested in laboratory with a real prototype by using a neutral point clamped inverter.