Contribution à l'optimisation des ensembles convertisseurs-machines à réluctance variable. Minimisation du facteur de dimensionnement

Abstract : These works involve the research of optimal waveforms of supply current minimizing the "silicon power " of static converter for variable reluctance machines (or switched reluctance machines). Sizing factors (for static converters) have been defined by analogy with the power factor of ac motors fed by sinusoidal currents. A theoretical study taking into account the specificities (magnetic saturation and not sinusoidal permeance waveforms) and the diversity of characteristics of these machines has led to develop specific models and discover that to get the most out of the inverter was obtained with voltage full wave square waveform and unidirectional currents. Theoretical limits of sizing factors have been highlighted. It appeared that, contrary to popular belief, factors of engine design variable reluctance could reach values equal or lower than those of conventional synchronous and asynchronous motors. But for this it is necessary that the machine has some favorable electromagnetic characteristics. The most significant of them, as might be expected, was the amplitude of the variation of inductance or the ratio of maximum to minimum values of the same inductance. But the magnetic saturation also plays a positive role. Excited regimes fed (especially in continuous conduction) showed improvements also very interesting. Finally, an experimental realization with a reluctance machine a few hundred watts, has served to validate the models and results. A fed with an excited mode (dc polarization of the magnetic circuit) has also been particularly helpful in terms of minimizing the apparent power silicon.
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Submitted on : Saturday, January 16, 2010 - 10:10:03 AM
Last modification on : Thursday, March 21, 2019 - 1:29:08 AM
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  • HAL Id : tel-00447842, version 1

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Bernard Multon. Contribution à l'optimisation des ensembles convertisseurs-machines à réluctance variable. Minimisation du facteur de dimensionnement. Energie électrique. Université Pierre et Marie Curie - Paris VI, 1985. Français. ⟨tel-00447842⟩

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