Title :
A deterministic harmonics mitigation technique for five-level inverters
Author :
Buccella, Concettina ; Cecati, Carlo ; Cimoroni, Maria Gabriella ; Razi, Kaveh
Author_Institution :
DigiPower s.r.l., L´Aquila, Italy
Abstract :
A deterministic algorithm aiming at reduction of harmonic content in three phase, five-level cascaded inverters is proposed. The procedure starts from a non-linear system consisting of disequations and, using Chebyshev polynomials and Waring´s formula, for any assigned modulation index computes those switching angles α1 and α2 reducing harmonics amplitude such as to fulfill grid code specifications. Simulation and experimental results demonstrate the achievable results.
Keywords :
Chebyshev approximation; harmonic distortion; invertors; Chebyshev polynomials; Waring formula; cascaded inverters; deterministic harmonics mitigation technique; five-level inverters; harmonic content; modulation index; Chebyshev approximation; Harmonic analysis; Inverters; Mathematical model; Modulation; Polynomials; Switches; Grid codes; Multilevel power converter; Selective Harmonic Mitigation (SHM); Total Harmonic Distortion (THD);
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7048625
