Title :
Analysis of pulse suppression in PWM modulation for symmetric cascaded multilevel inverters
Author :
De Alvarenga, Marcos Balduino ; Pomilio, José Antenor
Author_Institution :
Fed. Inst. of Educ., Univ. of Campinas - UNICAMP, Campinas, Brazil
Abstract :
Multilevel inverters are widely used in high-power applications involving high voltage and/or current. In this context, reductions in switching frequency contribute to decrease semiconductor losses, and allow the use of modulation techniques and devices available today. This article presents a strategy for the suppression of some of the PWM pulses in symmetrical cascaded multilevel inverters that reduces switching losses. It also provides an analysis of the impact of this strategy on the output signal quality.
Keywords :
PWM invertors; modulation; PWM modulation; high-power applications; modulation techniques; pulse suppression analysis; semiconductor losses; switching frequency; symmetric cascaded multilevel inverters; Algorithm design and analysis; Inverters; Pulse width modulation; Switches; Switching frequency; Topology;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6120078
