Minimization of THD for 29-level Asymmetrical Multilevel Inverter using Genetic Algorithm

Minimization of THD for 29-level Asymmetrical Multilevel Inverter using Genetic Algorithm
Author(s):
S.Gayathri, M.Thamilarasi, Aadyasha Patel
Keywords:
Multilevel inverter (MLI), Genetic algorithm (GA), Photo voltaic (PV), Total Harmonic Distortion (THD), Fast Fourier Transform (FFT).
Abstract
Multilevel inverters have many benefits viz., low cost, good efficiency, better reliability and etc, and some application such as PV panels and fuel cells. This work presents a 29-level Asymmetric Cascaded H-bridge MLI that uses the Genetic Algorithm. Optimized gating angles are proposed using GA. In this paper, minimization of THD is done by adjusting switching times of switches for 29-level inverter. For this purpose, first THD is defined as a function of these switching angles and then for minimization of this function, the optimization algorithm GA is used. The proposal is validated in frequency domain and FFT analysis is done.
Article Details
Unique Paper ID: 145832 Publication Volume & Issue: Volume 4, Issue 11 Page(s): 564 - 569
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