Harmonics elimination in a multilevel inverter with unequal DC sources using genetic algorithm

Author

Sabahi, Mehran ; Marami Iranaq, A.R. ; Bahrami, K.M. ; Bahrami, K.M. ; Sharifian, Mohammad B. B.

Author_Institution

Fac. of Electr. & Comput. Eng., Univ. of Tabriz, Tabriz, Iran

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

5

Abstract

In this paper, an optimal solution to the harmonic reduction problem in a cascaded multilevel inverter with non-equal DC sources using genetic algorithm (GA) is presented. Switching angles are generated for different values of modulation index by proposed algorithm, considering minimum voltage total harmonic distortion (THD) whereas selected harmonics are controlled within the allowable limits at all desired modulation indices including the point of discontinuity. Results are stored as a look-up table to be used to control the inverter for certain operating point. The computed angles are used in simulated circuit in MatlabSimulink to validate the results.

Keywords

genetic algorithms; harmonic distortion; harmonics suppression; invertors; optimal control; switching convertors; table lookup; cascaded multilevel inverter; genetic algorithm; harmonics elimination; look-up table; modulation index; optimal control; switching angles; total harmonic distortion; unequal DC sources; Genetic algorithms; Harmonic analysis; Inverters; Mathematical model; Pulse width modulation; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073451

Filename

6073451