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http://dx.doi.org/10.6113/JPE.2014.14.5.937

Optimized Space Vector Pulse-width Modulation Technique for a Five-level Cascaded H-Bridge Inverter  

Matsa, Amarendra (Department of Electrical Engineering,Visvesvaraya National Institute of Technology)
Ahmed, Irfan (Department of Electrical Engineering,Visvesvaraya National Institute of Technology)
Chaudhari, Madhuri A. (Department of Electrical Engineering,Visvesvaraya National Institute of Technology)
Publication Information
Journal of Power Electronics / v.14, no.5, 2014 , pp. 937-945 More about this Journal
Abstract
This paper presents an optimized space vector pulse-width modulation (OSVPWM) technique for a five-level cascaded H-bridge (CHB) inverter. The space vector diagram of the five-level CHB inverter is optimized by resolving it into inner and outer two-level space vector hexagons. Unlike conventional space vector topology, the proposed technique significantly reduces the involved computational time and efforts without compromising the performance of the five-level CHB inverter. A further optimized (FOSVPWM) technique is also presented in this paper, which significantly reduces the complexity and computational efforts. The developed techniques are verified through MATLAB/SIMULINK. Results are compared with sinusoidal pulse-width modulation (SPWM) to prove the validity of the proposed technique. The proposed simulation system is realized by using an XC3S400 field-programmable gate array from Xilinx, Inc. The experiment results are then presented for verification.
Keywords
Five-level cascaded H-bridge inverter; Optimized SVPWM; Power electronics; Space vector pulse-width modulation (SVPWM);
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