A recursive method that eliminates n+1 harmonics and their respective multiples from the output voltage of a cascaded H-bridge multilevel inverters with s = 2^n dc sources (n = 1, 2, 3,...) is proposed. It solves 2x2 linear systems with not singular matrices and always gives an exact solution with very low computational effort. Simulated results in three-phase five, nine, seventeen and thirty three level CHB inverters, and experimental results in five-level inverter demonstrate the validity of the method.
Recursive Selective Harmonic Elimination for Multilevel Inverters: Mathematical Formulation and Experimental Validation
Buccella C.;Cimoroni M.;Cecati C.;Di Tommaso A.;Schettino G.
2022-01-01
Abstract
A recursive method that eliminates n+1 harmonics and their respective multiples from the output voltage of a cascaded H-bridge multilevel inverters with s = 2^n dc sources (n = 1, 2, 3,...) is proposed. It solves 2x2 linear systems with not singular matrices and always gives an exact solution with very low computational effort. Simulated results in three-phase five, nine, seventeen and thirty three level CHB inverters, and experimental results in five-level inverter demonstrate the validity of the method.File in questo prodotto:
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