Abstract
This paper describes a novel proposal of double
quad-inverter configuration for multilevel twelve-phase openwinding
ac converter. Modular power units are developed
from reconfigured eight classical three-phase voltage source
inverters (VSIs). Each VSI has one additional bi-directional
switching device (MOSFET/IGBT) per each phase and linked
neutral with two capacitors. An original modified single
carrier five-level modulation (MSCFM) algorithm is developed
and modulates each 2-level VSIs as equivalent to ones 5-level
multilevel inverter. Observed set of results are presented with
model based numerical simulation software’s (Matlab/PLECS)
developments. Further, the results confirm the good
agreement to the developed theoretical background. Proposed
converter suits the need of low-voltage/high-current
applications such as ac tractions and ‘More-Electric Aircraft’
propulsion systems.