IJERT-EMS
IJERT-EMS

Comparative Study of Different PWM Control Techniques for a Three-phase Eleven-level Cascaded H-bridge Multilevel DC-link Inverter


Comparative Study of Different PWM Control Techniques for a Three-phase  Eleven-level Cascaded H-bridge Multilevel DC-link Inverter
Authors : Ramyashree.H.P.
Publication Date: 31-08-2013

Authors

Author(s):  Ramyashree.H.P.

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol.2 - Issue 9 (September - 2013)

e-ISSN:   2278-0181

Abstract

The paper titled °»Comparative study of Different PWM Control Techniques For a Three-phase Eleven- level Cascaded H-bridge Multilevel DC-link Inverter°… proposes a three phase eleven-level cascaded H-bridge multilevel DC-link inverter employing three novel carrier based PWM techniques such as Constant switching frequency Pulse width modulation , Variable switching frequency multicarrier Pulse width modulation and Phase shifted carrier Pulse width modulation. The above methodologies are divided into two techniques based on the type of modulation signal. The sub harmonic pulse width modulation cascaded multilevel inverter strategy, which minimizes total harmonic distortion and the switching frequency optimal pulse width modulation cascaded multilevel inverters strategy, which enhances the output voltages. The three phase eleven-level cascaded H-bridge multilevel DC-link inverter using three novel carrier based PWM techniques is simulated using MATLAB / SIMULINK software and the output voltage THD°«s and the fundamental output voltages for each of the cases are tabulated and are compared.

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