Multilevel Multiphase Space Vector PWM Algorithm With Switching State Redundancy
Lopez, O.; Alvarez, J.; Doval-Gandoy, J.; Freijedo, F.D.
Industrial Electronics, IEEE Transactions on
Volume 56, Issue 3, March 2009 Page(s):792 - 804
Digital Object Identifier   10.1109/TIE.2008.2004390
Summary:Multilevel multiphase technology combines the benefits of multilevel converters and multiphase machines. Nevertheless, new modulation techniques must be developed to take advantage of multilevel multiphase converters. In this paper, a new space vector pulsewidth modulation algorithm for multilevel multiphase voltage source converters with switching state redundancy is introduced. As in three-phase converters, the switching state redundancy permits to achieve different goals like extending the modulation index and reducing the number of switchings. This new algorithm can be applied to the most usual multilevel topologies; it has low computational complexity, and it is suitable for hardware implementations. Finally, the algorithm was implemented in a field-programmable gate array, and it was tested by using a five-level five-phase inverter feeding a motor.

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