A New Modular Multilevel Inverter Based on Step-Up Switched-Capacitor Modules
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2019-02-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
16
Series
Energies, Volume 12, issue 3
Abstract
A new structure of switched capacitor multilevel inverter (SCMLI) capable of voltage boosting and with self-balancing ability is introduced in this article. This advantage is the result of a step by step rise of capacitor voltages in each module, supplied by just one DC voltage source. The proposed topology generates a sinusoidal output waveform with a magnitude several times greater than the input one. Higher output staircase AC voltage is obtained by applying a nearest level control (NLC) modulation technique. The most significant features of this configuration can be mentioned as: fewer semiconductor devices, remarkably low total harmonic distortion (THD), desirable operating under high/low frequency, high efficiency, inherent bipolar voltage production, easy circuit expansion, ease of control and size reduction of the circuit thanks to utilizing neither bulky transformer nor inductor. Moreover, the proposed SCMLI is comprehensively surveyed through theoretical investigation and a comparison of its effectiveness to recent topologies. Eventually, the operating principle of a 25-level prototype of the suggested SCMLI is validated by simulation in the MATLAB SIMULINK environment and experimental results.Description
Keywords
Multilevel inverter, Self-balancing, Single-source converter, Step-up converter, Switched-capacitor
Other note
Citation
Khodaparast, A, Azimi, E, Azimi, A, Adabi, M E, Adabi, J & Pouresmaeil, E 2019, ' A New Modular Multilevel Inverter Based on Step-Up Switched-Capacitor Modules ', Energies, vol. 12, no. 3, 524 . https://doi.org/10.3390/en12030524