Real-time harmonics elimination procedures for high-power converters

This paper proposes a Selective Harmonic Elimination algorithm for multilevel power converters. Starting from. an analysis of valid modulation index intervals, the algorithm. computes those switching angles which eliminate the undesired. harmonic. Differently by other approaches, it is based on the. use of full analytical and numerical procedures, which can be. easily executed in real-time. After a detailed description of the. method, simulation and experimental results obtained with a five. level cascaded multilevel inverter are shown demonstrating the. quality of the achievable results.