Title :
A fast space-vector algorithm for multilevel converters without coordinates transformation
Author :
Castro, Luis G. ; Corrêa, Maurício B. ; Jacobina, C.B. ; Boroyevich, D.
Author_Institution :
Dept. of Electr. Eng. & Inf., Univ. Fed. de Campina Grande, Campina Grande, Brazil
Abstract :
In recent years, Multilevel Converters has become a promising technology for medium voltage applications. Nevertheless, when the number of levels increases, switching states selection becomes a hard task. The main concerns are with computational effort for digital implementation and capacitor voltage balance. Improvements in Pulse Width Modulation (PWM) strategies has been achieved thanks to researches contributions. This paper proposes a modification in the algorithm introduced by Celanovic and Boroyevich. In the new algorithm the coordinates transformation is not necessary, which reduces the computational effort. General concepts of PWM for multilevel converters are presented and, the new algorithm is presented and compared with the previous. Simulation based results are exploit to show that the algorithm is so effective as the previous solution. Experimental results illustrates a DSP control solution for an inverter up to 7-level.
Keywords :
PWM power convertors; coordinates transformation; fast space-vector algorithm; multilevel converters; pulse width modulation strategies; Converters; Digital signal processing; Harmonic analysis; Inverters; Pulse width modulation; Switches; DSP; Space Vector; multilevel converters;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
DOI :
10.1109/ECCE.2010.5617971