Title :
Synchronous modulation of cascaded inverters of asymmetrical open-end winding motor drive
Author :
Oleschuk, V. ; Priet, J. ; Barrero, F.
Author_Institution :
Power Eng. Inst., Moldova, Moldova
Abstract :
Algorithms of space-vector-based synchronized pulsewidth modulation (PWM) have been applied for control of dual-inverter fed open-end winding induction motor drive supplied by two isolated dc-sources with non-equal voltages. It has been shown, that algorithms of synchronized PWM provide continuous phase voltage symmetry for any ratios (integral or fractional) between the switching and fundamental frequencies of dual-inverter systems on the base of either standard or neutral-point-clamped inverters, and also for any ratios between voltages of two dc-sources of systems. Spectra of the phase voltage of the open-end winding drives with algorithms of synchronized PWM do not contain even harmonics and sub-harmonics during the whole control range, which is especially important for the medium-power and high-power applications.
Keywords :
PWM invertors; induction motor drives; machine vector control; machine windings; phase control; synchronous motor drives; voltage control; DC-source isolation; PWM; asymmetrical open-end winding motor drive; continuous phase voltage symmetry; dual-inverter fed open-end winding induction motor drive; high-power application; medium-power application; neutral-point-cIamped inverter; phase voltage spectra; space-vector-based synchronized pulsewidth modulation; subharmonics control range; switching frequency;
Conference_Titel :
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-2419-9
Electronic_ISBN :
1553-572X
DOI :
10.1109/IECON.2012.6388649