Citation
Dahidah, Mohamed. S. A. and Agelidis, Vassilios G. and Rao, Machavaram V. (2006) On Abolishing Symmetry Requirements in the Formulation of a Five-Level Selective Harmonic Elimination Pulse-Width Modulation Technique. IEEE Transactions on Power Electronics, 21 (6). p. 1833. ISSN 0885-8993
Text (On abolishing symmetry requirements in the formulation of a five-level selective harmonic elimination pulse-width modulation technique)
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Abstract
Selective harmonic elimination pulse width modulation (SHE-PWM) techniques offer a tight control of the harmonic spectrum of a given voltage waveform generated by a power electronic converter along with a low number of switching transitions. These optimal switching transitions can be calculated through Fourier theory, and for a number of years quarter-wave and half-wave symmetries have been assumed when formulating the problem. It was shown recently that symmetry requirements can be relaxed as a constraint. This changes the way the problem is formulated, and different solutions can be found without a compromise. This letter reports solutions to the switching transitions of a five-level SHE-PWM when both the quarter- and half-wave symmetry are abolished. Only the region of high-modulation indices is reported since the low-modulation indices region requires a unipolar waveform to be realized. Selected simulation and experimental results are reported to show the effectiveness of the proposed method.
Item Type: | Article |
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Subjects: | T Technology > T Technology (General) Q Science > QA Mathematics > QA71-90 Instruments and machines > QA75.5-76.95 Electronic computers. Computer science |
Divisions: | Faculty of Engineering and Technology (FET) |
Depositing User: | Ms Suzilawati Abu Samah |
Date Deposited: | 13 Oct 2011 05:49 |
Last Modified: | 03 Mar 2014 04:53 |
URII: | http://shdl.mmu.edu.my/id/eprint/3253 |
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