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Contribution à la fiabilité des interrupteurs haute tension matriciels

Abstract : Nowadays, power electronic equipment requirements are important, conceming performances, quality and reliability. On the other hand, costs have to be reduced in order to satisfy the market rules. To provide cheap, reliability and performances, many standard components with mass production are developed. But the construction of specifie products must be considered following these two different points: in one band you can produce specifie components, with delay, overcost problems and eventuality quality and reliability problems, in the other and you can use standard components in a adapted topologies. The CEA of Pierrelatte has adopted this last technique of power electronic conception for the development ofthese high voltage pulsed power converters. The technique consists in using standard components and to associate them in series and in parallel. The matrix constitutes high voltage macro-switch where electrical parameters are distributed between the synchronized components. This study deals with the reliability of these structures. 1t brings up the high reliability aspect of MOSFETs matrix associations. Thanks to severa! homemade test facilities, we obtained lots of data concerning the components we use. The understanding of defects propagation mechanisms in matrix structures has allowed us to put forwards the necessity of robust drive system, adapted clamping voltage protection, and careful geometrical construction. Al! these reliability considerations in matrix associations have notably allowed the construction of a new matrix structure regrouping al! solutions insuring reliability. Reliable and robust, this product has already reaches the industrial stage.
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Submitted on : Thursday, September 9, 2021 - 12:31:44 PM
Last modification on : Thursday, September 9, 2021 - 2:27:29 PM
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  • HAL Id : tel-03339139, version 1




Yvan Lausenaz. Contribution à la fiabilité des interrupteurs haute tension matriciels. Electronique. Université de droit, d'économie et des sciences d'Aix-Marseille, 2000. Français. ⟨tel-03339139⟩



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