Non-Symmetrical Selective Harmonic Elimination PWM Techniques: The Unipolar Waveform
- 1 January 2007
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1885-1891
- https://doi.org/10.1109/pesc.2007.4342290
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 is 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. This paper reports solutions to the switching transitions of unipolar SHE-PWM when both the quarter- and half-wave symmetries are abolished. Various operating points for both single- and three-phase patterns and different values of the modulation index are reported. Selected simulation and experimentally verified results are reported to show the effectiveness of the proposed method.Keywords
This publication has 20 references indexed in Scilit:
- Generalization of Selective Harmonic Control/EliminationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- A Hybrid Genetic Algorithm for Selective Harmonic Elimination PWM AC/AC Converter ControlElectrical Engineering, 2006
- Multiple sets of solutions for harmonic elimination PWM bipolar waveforms: analysis and experimental verificationIEEE Transactions on Power Electronics, 2006
- Solution trajectories of the harmonic-elimination problemIEE Proceedings - Electric Power Applications, 2006
- Selective Harmonic Control: A General Problem Formulation and Selected SolutionsIEEE Transactions on Power Electronics, 2005
- Harmonic Optimization of Multilevel Converters Using Genetic AlgorithmsIEEE Power Electronics Letters, 2005
- Evolutionary approach for line current harmonic reduction in AC/DC convertersIEEE Transactions on Industrial Electronics, 2002
- Inverter harmonic reduction using Walsh function harmonic elimination methodIEEE Transactions on Power Electronics, 1997
- Application of neural networks to the optimal control of three-phase voltage-controlled invertersIEEE Transactions on Power Electronics, 1994
- Programmed PWM techniques to eliminate harmonics: a critical evaluationIEEE Transactions on Industry Applications, 1990