Une approche de dimensionnement sur cycle de vie pour l'évaluation du potentiel de la distribution DC dans le bâtiment

Evolution of building energetic context (photovoltaic production and electric vehicle) incites us to reconsider the use of DC distribution scheme for building. Since energetic demand and environmental impacts become more and more important, the sizing of such system on its only use phase is nowadays not sufficient to quantify its global environmental impacts. In other words, the only reduction of the number of conversion stages and losses does not in itself evidence that the DC distribution is more efficient than AC. For this reason, we propose an eco-design approach of the components of such system minimizing their primary energy consumption during their whole life cycle (losses and embodied energy). One of the objectives was to evaluate the optimal voltage DC of such network. First, this paper presents the models which have been developed to assess losses and embodied energy of wiring and power electronic components. Finally, some eco-design results and sensitivity studies are presented.