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Harmonic Orientation of Pulse Width Modulation Technique in Multilevel Inverters

Author(s): Urmila Bandaru | Subba D Rayudu

Journal: Advances in Electrical and Electronic Engineering
ISSN 1804-3119

Volume: 9;
Issue: 1;
Start page: 29;
Date: 2011;
Original page

Keywords: Multicarrier Pulse Width Modulation | diode clamped inverter | Switching frequency optimal PWM | Sub-Harmonic PWM | Constant switching frequency | harmonic orientation | multilevel converter | Total harmonic distortion.

The Multilevel Inverter topology gives the advantages of usage in high power and high voltage application with reduced harmonic distortion without a transformer. This paper presents a comparative study of orientation of higher ordered harmonics with increase in switching frequency around the frequency modulation index of nine level diode clamped inverter for different Switching frequency Multicarrier Pulse width Modulation.
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