Écoconception en électronique de puissance. Impacts du dimensionnement, de la modularité et de la diagnosticabilité

Design for sustainability in the field of power electronics is gaining momentum, with many concepts yet to be explored and developed. This thesis focuses on a specific aspect of eco-design: circularity, by emphasizing the implementation of modularity and diagnosability. The objective is to reduce environmental impacts throughout the lifecycle of power electronic systems. The underlying idea is that a system equipped with modularity and diagnosability can provide more or less precise information about the location of a fault and thus enable selective replacement of faulty components, rather than replacing the entire system.While this approach appears promising from an environmental standpoint, research in this field is still limited.Initially, the thesis addresses environmental quantification in power electronics by conducting a life cycle analysis of a reference inverter. The results highlight manufacturing and usage phases as the main sources of environmental impacts.Subsequently, the thesis focuses on proposing a method to quantify the environmental impacts of power electronics system over time, taking into account the replacement of faulty components, with the possibility of integrating modularity and diagnosticability.Finally, this thesis challenges traditional design criteria, primarily based on energy efficiency. It proposes an eco-optimization approach, meaning designing by optimizing environmental criteria.The results demonstrate that modularity and diagnosticability can significantly reduce environmental impacts when coupled. By considering these aspects from the design phase, it is possible to create systems that are more sustainable and environmentally friendly.