Selected harmonics elimination in multilevel inverter using improved numerical technique

Salman Ahmad, Atif Iqbal, R. Al-Ammari, Haitham Abu-Rub

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

For medium voltage high power application the modulation technique for power converters based on pre-computed Pulse Width Modulation (PWM) switching patterns can be very useful since the generated harmonic content can be previously known and optimize. The main challenge in applying harmonics elimination techniques at lower switching frequency is in solving the system of non-linear transcendental equations obtained by Fourier analysis. The numerical techniques offer simple solving procedure for lesser number of switching angles with proper initial guess. However, without proper initial guess and for large number of switching angles, the method fails to solve the system of equations. In this paper an improved numerical technique is proposed to solve the large number of harmonics elimination equations with any random initial guess. The method proposed also ensures multiple solutions of the simultaneous equations, hence gives more degree of freedom to operate converter at a particular modulation index. Simulation results are provided to validate the concept.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538625088
DOIs
Publication statusPublished - 4 Jun 2018
Event12th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2018 - Doha, Qatar
Duration: 10 Apr 201812 Apr 2018

Other

Other12th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2018
CountryQatar
CityDoha
Period10/4/1812/4/18

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Keywords

  • Harmonics Elimination
  • Jacobian
  • Numerical technique
  • Power Converter
  • Pulse Width Modulation
  • Switching angles

ASJC Scopus subject areas

  • Hardware and Architecture
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Ahmad, S., Iqbal, A., Al-Ammari, R., & Abu-Rub, H. (2018). Selected harmonics elimination in multilevel inverter using improved numerical technique. In Proceedings - 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2018 (pp. 1-6). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CPE.2018.8372500