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A Hybrid Genetic Algorithm for Selective Harmonic Elimination Control of a Multilevel Inverter with Non-Equal DC Sources

Lookup NU author(s): Dr Mohamed Dahidah

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Abstract

The paper presents an optimal solution for eliminating pre-specified order of harmonics from a stepped waveform of a multilevel cascaded inverter topology with non-equal dc sources. The main challenge of solving the associated nonlinear equations, which are transcendental in nature and therefore have multiple solutions, is the convergence of the relevant algorithms and therefore an initial point selected considerably close to the exact solution is required. The paper discusses an efficient hybrid real coded genetic algorithm (HRCGA) that reduces significantly the computational burden resulting in fast convergence. An objective function describing a measure of effectiveness of eliminating selected order of harmonics while controlling the fundamental component is derived. Different cases including seven- and nine-level inverters with different values of modulation indices are reported. The theoretical findings are validated through simulation studies.


Publication metadata

Author(s): Dahidah MSA, Agelidis VG

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 6th International Conference on Power Electronics and Drives Systems (PEDS 2005)

Year of Conference: 2005

Pages: 1205-1210

URL: http://dx.doi.org/10.1109/PEDS.2005.1619871

DOI: 10.1109/PEDS.2005.1619871

Library holdings: Search Newcastle University Library for this item

ISBN: 0780392965


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