Effect of duty cycle on THD for multilevel inverter based on selective harmonic elimination technique
Multilevel inverters controlled suffers from the issue of harmonic distortion in the output voltage. Selective Harmonic Elimination (SHE) technique plays an effective role to eliminate these harmonics. The undesirable odd harmonics can be eliminated by having optimized the switching angles in S...
| Main Authors: | , , , , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English English |
| Published: |
IEEE
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/67991/ http://irep.iium.edu.my/67991/ http://irep.iium.edu.my/67991/1/67991_Effect%20of%20Duty%20Cycle%20on%20THD%20for%20Multilevel%20Inverter%20_article.pdf http://irep.iium.edu.my/67991/2/67991_Effect%20of%20Duty%20Cycle%20on%20THD%20for%20Multilevel%20Inverter%20_Scopus.pdf |
| Summary: | Multilevel inverters controlled suffers from the
issue of harmonic distortion in the output voltage. Selective
Harmonic Elimination (SHE) technique plays an effective role
to eliminate these harmonics. The undesirable odd harmonics
can be eliminated by having optimized the switching angles in
SHE signal. To optimized and obtained these switching angles,
a number of nonlinear equations should be solved using a
numerical method. In addition to the modulation index, by
changing the value of the duty cycle the Total Harmonics
Distortion (THD) will also change. In this paper, a novel
Optimization Harmonic Elimination Technique (OHET) based
on SHE scheme is proposed in order to minimize Total
Harmonic Distortion (THD). To evaluate and investigate the
performance of the proposed scheme, a seven-level cascaded
inverter is simulated by MATLAB and PSIM software. |
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