USAMI Control with a Higher Order Harmonics Elimination Strategy based on the Resultant Theory

Abstract This paper proposed a method to determinate the switching angles for a Uniform Step Asymmetrical Multilevel Inverter (USAMI) by eliminating specified higher order harmonics while maintaining the required fundamental voltage. This method is based on the resultant theory and can be applied to USAMI with any number of levels. As an example, a seven-level USAMI is considered in this paper and the optimum switching angles are calculated to generate a desired fundamental component and to eliminate the fifth and seventh harmonic components.