Design and implementation of a multi level three-phase inverter with less switches and low output voltage distortion

Ahmed, M.E.; Mekhilef, S. (2009) Design and implementation of a multi level three-phase inverter with less switches and low output voltage distortion. Journal of Power Electronics, 9 (4). pp. 593-603. ISSN 1598-2092

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Abstract

This paper proposes and describes the design and operational principles of a three-phase three-level nine switch voltage source inverter. The proposed topology consists of three bi-directional switches inserted between the source and the full-bridge power switches of the classical three-phase inverter. As a result, a three-level output voltage waveform and a significant suppression of load harmonics contents are obtained at the inverter output. The harmonics content of the proposed multilevel inverter can be reduced by half compared with two-level inverters. A Fourier analysis of the output waveform is performed and the design is optimized to obtain the minimum total harmonic distortion. The full-bridge power switches of the classical three-phase inverter operate at the line frequency of 50Hz, while the auxiliary circuit switches operate at twice the line frequency. To validate the proposed topology, both simulation and analysis have been performed. In addition, a prototype has been designed, implemented and tested. Selected simulation and experimental results have been provided.

Item Type: Article
Creators:
  1. Ahmed, M.E.
  2. Mekhilef, S.
Journal or Publication Title: Journal of Power Electronics
Additional Information: Faculty of Engineering, University of Malaya
Uncontrolled Keywords: Two-level inverter Multi level inverter Total harmonic distortion Three level output waveform inverter 3-level inverter pwm inverter 2-level inverter deadbeat control topology configuration converters drives
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TS Manufactures
Divisions: Faculty of Engineering
Depositing User: Prof. Saad Mekhilef
Date Deposited: 24 Feb 2012 10:15
Last Modified: 24 Feb 2012 10:15
URI: http://eprints.um.edu.my/id/eprint/2778

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