Open AccessOptimal Pulse Width Modulation of Three-Level Converters With Reduced Common-Mode Voltage
Author(s) -
Isavella Koukoula,
Petros Karamanakos,
Tobias Geyer
Publication year - 2024
Publication title -
ieee transactions on industry applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.19
H-Index - 195
eISSN - 1939-9367
pISSN - 0093-9994
DOI - 10.1109/tia.2024.3359127
Subject(s) - power, energy and industry applications , signal processing and analysis , fields, waves and electromagnetics , components, circuits, devices and systems
This paper presents the computation of three-level optimized pulse patterns (OPPs) that limit the common-mode voltage (CMV) and generate currents with low harmonic distortions. This is achieved by relaxing the symmetry properties of conventional OPPs and by reformulating the associated optimization problem accordingly. As demonstrated by the presented numerical results for a three-level converter driving a medium-voltage (MV) induction machine, the computed OPPs not only limit the CMV but also produce very low harmonic distortions, in some cases even lower than those of conventional OPPs. Experimental results based on a scaled-down, low-voltage (LV) drive system serve as a proof of concept, highlighting the benefits of the proposed OPPs.