A simple THD minimization technique for transistor-clamped H-bridge-based cascaded multilevel inverter
This paper presents a simple modulation technique that minimizes the output voltage total harmonic distortion (THD) without eliminating the lowest order harmonics. It uses the voltage-angle equal concept of sinusoidal reference waveform to generate the step output voltage of a single-phase transisto...
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| Main Authors: | , , |
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| Format: | Article |
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Universiti Teknikal Malaysia Melaka
2018
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/22756/ http://journal.utem.edu.my/index.php/jtec/article/view/3490 |
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| Summary: | This paper presents a simple modulation technique that minimizes the output voltage total harmonic distortion (THD) without eliminating the lowest order harmonics. It uses the voltage-angle equal concept of sinusoidal reference waveform to generate the step output voltage of a single-phase transistor-clamped H-bridge (TCHB)-based cascaded multilevel inverter. The real implementation of the modulation technique for a various range of modulation indices is built using an Altera field-programmable gate array (FPGA). It is found that the proposed modulation method resulted in a dramatic decrease in the inverter’s output voltage THD when increasing the number of output steps up to thirteen levels. |
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