Open AccessCarrier‐based pulse‐width modulation techniques for asymmetrical six‐phase open‐end winding drives
Author(s) -
Jones Martin,
Patkar Fazlli,
Levi Emil
Publication year - 2013
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2012.0372
Subject(s) - pulse width modulation , modulation (music) , pulse (music) , phase (matter) , phase modulation , materials science , control theory (sociology) , electrical engineering , physics , electronic engineering , topology (electrical circuits) , engineering , computer science , acoustics , voltage , control (management) , quantum mechanics , artificial intelligence
The study discusses development, implementation and performance of carrier‐based pulse‐width modulation (PWM) techniques for an asymmetrical six‐phase open‐end winding drive supplied by two two‐level six‐phase voltage source inverters (VSIs). The VSIs are fed from two equal and mutually isolated dc voltage sources, so that the same performance as with a three‐level VSI in single‐sided supply mode can be achieved. The considered modulation techniques are the in‐phase disposition (PD‐PWM) and the alternate phase opposition disposition, which are both classified as level‐shifted PWM methods, and the phase‐shifted PWM method. The performance is studied and compared using computer simulations and experiments undertaken on a laboratory prototype. It is shown that, in contrast to the three‐phase and five‐phase cases, the PD‐PWM method does not offer the best performance.