WSEAS Transactions on Power Systems
Print ISSN: 1790-5060, E-ISSN: 2224-350X
Volume 10, 2015
THD Improvement of a PWM Cascade Multilevel Power Inverters Using Genetic Algorithms as Optimization Method
Authors: Jorge Luis Diaz Rodriguez, Luis David Pabon, Aldo Pardo Garcia
Abstract: This paper presents an optimization of the electric power quality by designing a 9 steps multilevel power inverter, which adopts a multi-PWM optimized using genetic algorithms (GA), and minimizing Total Harmonic Distortion (THD) of the first 50 harmonics to about 0%. This optimization is considered an alternative technique because it reduces the expression used to quantify TDH numerically. Particularly for the 9 steps multilevel wave form, it reduces the number of power on-and-off angles as well as the position within the levels of the first quarter-wave modulation. The research involved developing a prototype for experimental verification.
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Keywords: Multilevel inverter, total harmonic distortion, genetic algorithm, PWM
Pages: 46-54
WSEAS Transactions on Power Systems, ISSN / E-ISSN: 1790-5060 / 2224-350X, Volume 10, 2015, Art. #6