Title :
A low computation Space Vector PWM scheme for multilevel inverters based on fractal approach
Author :
Shiny, G. ; Baiju, M.R.
Author_Institution :
Dept. of Electron. & Commun. Eng., Coll. of Eng. Trivandrum, Trivandrum, India
Abstract :
This paper proposes a Space Vector based pulse width modulation scheme for multilevel inverters. The principle of fractals is employed to find the sector of operation. The scheme is simulated for a 5-level inverter and experimentally verified by using a 3-level inverter configuration. The 3-level inverter is realized by connecting dual 2-level inverters in open-end winding configuration. In the space vector diagram, to represent the space vectors, 60° coordinate system is used instead of the Cartesian coordinate system. In 60° coordinate system, only integer coordinates are involved and hence the proposed scheme reduces computational complexity of the fractal algorithm. Experimental results are presented, including operation in over modulation region.
Keywords :
PWM invertors; computational complexity; machine windings; 3-level inverter configuration; 5-level inverter; cartesian coordinate system; computational complexity; dual 2-level inverters; fractal algorithm; integer coordinate; low computation space vector PWM scheme; multilevel inverters; open end winding configuration; space vector based pulse width modulation scheme; Equations; Fractals; Inverters; Pulse width modulation; Switches; Windings; Fractal; Mapping; Multilevel inverter; Open-end winding; Space Vector PWM;
Conference_Titel :
Industrial Electronics & Applications (ISIEA), 2010 IEEE Symposium on
Conference_Location :
Penang
Print_ISBN :
978-1-4244-7645-9
DOI :
10.1109/ISIEA.2010.5679481