The effects of DC source voltage unbalance on the CHB inverter, if not properly managed, reduce the efficiency of the whole power system and generate unwanted harmonics in the output voltage with increased THD. In this paper, an SHE technique operating at the fundamental frequency has been proposed for unbalanced five-level CHB inverters to fix the amplitude of the fundamental harmonic, set the amplitude of the lower order harmonics to zero and achieve high efficiency performance. A preliminary off-line graphical approach was used to determine the switching angles at some modulation index values. Subsequently, a real-time interpolating Lagrange polynomial-based approach is proposed to obtain a continuous modulation index range. The study has been preliminarily analyzed in a simulation environment and subsequently validated experimentally.

Buccella C., Cimoroni M.G., Cecati C., Di Tommaso A.O., Meo S., Nevoloso C., et al. (2024). Real-Time Lagrange-Polynomials Selective Harmonic Elimination for Unbalanced Five-Level Inverters. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1-12 [10.1109/TIA.2024.3395579].

Real-Time Lagrange-Polynomials Selective Harmonic Elimination for Unbalanced Five-Level Inverters

Di Tommaso A. O.;Nevoloso C.;Schettino G.
2024-01-01

Abstract

The effects of DC source voltage unbalance on the CHB inverter, if not properly managed, reduce the efficiency of the whole power system and generate unwanted harmonics in the output voltage with increased THD. In this paper, an SHE technique operating at the fundamental frequency has been proposed for unbalanced five-level CHB inverters to fix the amplitude of the fundamental harmonic, set the amplitude of the lower order harmonics to zero and achieve high efficiency performance. A preliminary off-line graphical approach was used to determine the switching angles at some modulation index values. Subsequently, a real-time interpolating Lagrange polynomial-based approach is proposed to obtain a continuous modulation index range. The study has been preliminarily analyzed in a simulation environment and subsequently validated experimentally.
2024
Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici
Buccella C., Cimoroni M.G., Cecati C., Di Tommaso A.O., Meo S., Nevoloso C., et al. (2024). Real-Time Lagrange-Polynomials Selective Harmonic Elimination for Unbalanced Five-Level Inverters. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1-12 [10.1109/TIA.2024.3395579].
File in questo prodotto:
File Dimensione Formato  
Real-Time_Lagrange-Polynomials_Selective_Harmonic_Elimination_for_Unbalanced_Five-Level_Inverters.pdf

accesso aperto

Descrizione: ahead of print
Tipologia: Versione Editoriale
Dimensione 2.36 MB
Formato Adobe PDF
2.36 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/643613
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact