Advances in Power Electronics
Volume 2011, Article ID 581306, 9 pages
http://dx.doi.org/10.1155/2011/581306
Simulation of Processes in Dual Three-Phase System on the Base of Four Inverters with Synchronized Modulation
1Institute of Power Engineering, Academy of Sciences of Moldova, 2028 Chishinev, Moldova
2Department of Electrical Engineering, University of Bologna, 40136 Bologna, Italy
Received 30 June 2011; Accepted 15 September 2011
Academic Editor: Francesco Profumo
Copyright © 2011 Valentin Oleschuk et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Novel method of space-vector-based pulse-width modulation (PWM) has been disseminated for synchronous control of four inverters feeding six-phase drive on the base of asymmetrical induction motor which has two sets of windings spatially shifted by 30 electrical degrees. Basic schemes of synchronized PWM, applied for control of four separate voltage-source inverters, allow both continuous phase voltages synchronization in the system and required power sharing between DC sources. Detailed MATLAB-based simulations show a behavior of six-phase system with continuous and discontinuous versions of synchronized PWM.