Performance Evaluation of Multi-carrier PWM Techniques: PD, POD and APOD

Year 2019, Volume: 7 Issue: 2, 38 - 43, 30.06.2019

Mustafa İnci

https://doi.org/10.18100/ijamec.569660

Cited By: 3

Abstract

In industrial applications, modulation strategies play a significant
role to provide the effective voltage generation at the outputs of inverter
structures. Also, the modulation strategies are important to generate output
voltages with lower harmonic distortions. For this purpose, there are several
modulation techniques to produce stepped voltage waveforms by reducing
harmonics for high voltage levels. Therefore, this work introduces the
comparative study of multi-carrier based pulse width modulation (PWM) methods
used in high power rated inverters. In this regard, phase disposition (PD),
phase opposition disposition (POD) and alternative phase opposition disposition
(APOD) PWM strategies are tested in five-level cascaded H-bridge inverter. The
performance consequences are received for different carrier frequencies, and
total harmonic distortions are evaluated for tested methods. The results show
that total harmonic distortion in APOD-PWM controlled inverter is less than
other methods. In addition, total harmonic distortion values are performed for
frequency values, which are from 0.5 kHz to 4 kHz.

Keywords

Multi-carrier PWM, Phase Disposition, Phase Opposition Disposition, Alternative Phase Opposition Disposition

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