Prise en compte de la CEM dans une méthodologie de pré-dimensionnement par optimisation déterministe en électronique de puissance : application à un redresseur triphasé aéronautique

Abstract : This thesis deals with the sizing of power electronics using deterministic optimization. In this way, methods to integrate the ElectroMagnetic Compatibility constraints in such process were studied. The case of a three-phase rectifier with EMC filters on both AC and DC sides was considered. A common-mode path creates an interaction between the two filters, thus they have to be sized together. Models of the converter and its components were developed for their sizing by deterministic optimizations. In such conception problem, all the parameters used for describing the system configuration (functional elements values, PWM command strategy and the switching frequency) influence the conducted EMC emissions. Therefore, the modeling of the EMC constraints was integrated in the optimization procedure, which aims the overall weight reduction. Thanks to that, a global approach where EMC filters are sized along with the converter was achieved, whereas it is usually done after the converter conception.The main challenge was the variation of the switching frequency in optimization. Strategies were developed regarding the automatic surveillance of the EMC spectrums in order to drastically reduce their computation times. An innovative formulation of the EMC constraints enabled the optimizations to converge. An automatic procedure for launching multiple deterministic optimizations with random initial parameters allowed us to obtain good optimization results, regarding the constraints and the global weight of the system. In this work, genericity of the modelling approach was a main concern, regarding EMC and the different sizing models. Therefore, the adaptation of the developed methods to other applications should be convenient.
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Arnaud Baraston. Prise en compte de la CEM dans une méthodologie de pré-dimensionnement par optimisation déterministe en électronique de puissance : application à un redresseur triphasé aéronautique. Energie électrique. Université Grenoble Alpes, 2019. Français. ⟨NNT : 2019GREAT006⟩. ⟨tel-02304255⟩

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