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Contribution à l'évaluation de la fiabilité des chaînes polyphasées de conversion électromécanique d'énergie

Abstract : Electrical multi-phase machines exhibit intrinsic advantages (power subdivision, weak torque ripple) compared to 3-phase machines. Multi-phase machines are appreciated for marine propulsion. They own reconfiguration capabilities due to redundancy because of their high number of phases. Those capabilities are able to improve multi-phase machines reliability by using degraded modes. Presented work proposes a methodology to quantify the multi-phase system reliability. Static converter is particularly investigated as its components are a weak point in the system. Continuous virtual bases of the components are developed to prevent quantification effects. Main stressors are identified and included in the failure rates assessment of the different system components. Markov models are used to take into account the reconfiguration consequences onto the reliability function. A coupled criterion performance-reliability is introduced to characterize degraded modes into the reliability assessment. Examples of the method application from marine environment are exhibited including their topology, mission profile and control strategy, which strongly influence the stressors. A sensitivity analysis is proposed showing the input data scattering effect onto the reliability function.
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Submitted on : Wednesday, July 24, 2019 - 3:37:06 PM
Last modification on : Friday, August 5, 2022 - 2:53:59 PM


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  • HAL Id : tel-02193573, version 1


Christophe Olmi. Contribution à l'évaluation de la fiabilité des chaînes polyphasées de conversion électromécanique d'énergie. Génie des procédés. Ecole nationale supérieure d'arts et métiers - ENSAM, 2019. Français. ⟨NNT : 2019ENAM0013⟩. ⟨tel-02193573⟩



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