چکیده مقاله
The Selective Harmonic Elimination SHE is one of the methods, which is applied to eliminate harmonics and so, reduce Total Harmonic Distortion THD in Output Voltage of Multilevel Inverters To apply SHE for cascade multilevel inverters, the switching angles of all stages of cascade multilevel inverters have to be computed by solving a set of nonlinear transcendental equations For this purpose, optimization algorithms are used to solving these equations In this paper, one of the most novel optimization algorithms which is called Gravitation Search Algorithm GSA is used to solve these nonlinear transcendental equations To show the superiority of the proposed algorithm to other traditional algorithms, this algorithm is applied for different levels of cascade multilevel inverter and its results are compared with Particle Swarm Optimization PSO This comparison shows that, in higher levels of cascade multilevel inverter, GSA has more reduction in selected harmonics than PSO, and so, leads to reach better results in amplitude of selected harmonics and THD
کلیدواژهها
نویسندگان
Kasra Latifi Fard
Master science of power electric: Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran
Mohammad Sarvi
Associate Professor: Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran
شیوه ارجاع
Latifi Fard, Kasra and Sarvi, Mohammad,1394,Application of Gravitation Search Algorithm in Harmonic Reduction of Cascade Multilevel Inverter’s Output Voltage,International Conference on New Research Findings in Electrical Engineering and Computer Science,Tehran
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