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Bidart, France

Tyl B.,APESA | Lizarralde I.,ESTIA Recherche | Allais R.,University of Technology of Troyes
Procedia CIRP

Design has a great role to play in sustainability. Interesting progresses has been performed within the last decades. Nevertheless, some issues of sustainability, and their impact on design, remains poorly studied. Specifically, when it comes to the field of local value creation, the literature in design is still limited. However, the Local Value Creation (LVC) thinking can be a great insight for designers to develop more ecoinnovative concepts, through new product design, new services and new business models. In order to go towards this direction, it is necessary to include new variables that are rarely considered in design processes such as the local workforce, sustainable local resources or the customization of the new product or service for local customers. This paper proposes a better understanding of the relation between eco-design approaches and LVC, and more precisely how current eco-design approaches consider this issue. To do so, a first part introduces the Local Value Creation concept and its challenges for sustainability. Then, a second part focuses on a literature review to understand how the LVC dimension is studied in the eco-design process. This will lead in a third section to concretely characterize how eco-design approaches and tools consider LCV issue. A last section proposes to identify potential contradiction between the LVC and the eco-design concept, in order to draw first outlines of a new eco-design paradigm with a Local Value Creation dimension. © 2015 The Authors. Published by Elsevier B.V This is an open access article under the CC BY-NC-ND license. Source

Dupe V.,ESTIA Recherche | Dupe V.,French National Center for Scientific Research | Briand R.,ESTIA Recherche
International Journal on Interactive Design and Manufacturing

This paper describes a multidisciplinary and interactive approach for the design of autonomous microsystems. These devices satisfy the actual requirements in terms of size, cost and autonomy. This autonomy is obtained by harvesting the energy in microsystem environment. There is no denying that microsystem design requires multidisciplinary skills and necessitates collaboration between several groups with different fields of expertise. All aspects have to be considered to get a mechanically, electronically and energetically efficient structure, consistent with the specifications and the requirements of the problem. However, few designers are competent enough in all the involved engineering fields. Thereby, we propose a multidisciplinary and interactive approach for autonomous microsystem design. This method delves into several steps. It begins by a global description and analysis of the system in its environment. This problem structuring is mainly based on the use of tools of functional analysis. Then, the autonomous microsystem is modeled, with a special care on energy harvester design. The method is applied to energy harvester design for automotive braking system instrumentation. The interactive character is present through the consideration of interactions (cognitive, physical and sensory). Finally, the multidisciplinary aspect is ensured by the collaboration and the exchanges between designers and numeric tools. © 2009 Springer-Verlag. Source

Bonithon G.,ESTIA Recherche | Bonithon G.,BART | Joyot P.,ESTIA Recherche | Chinesta F.,Airbus | Villon P.,UTC Roberval
Engineering Analysis with Boundary Elements

There are many ways to solve spacetime linear parabolic partial differential equations by using the boundary element method (BEM). In general, standard techniques make use of an incremental strategy. In this paper we propose a novel alternative of efficient non-incremental solution strategy for that kind of models. The proposed technique combines the use of the BEM with a proper generalized decomposition (PGD) that allows a spacetime separated representation of the unknown field within a non-incremental integration scheme. © 2010 Published by Elsevier Ltd. Source

Etxeberria A.,ESTIA Recherche | Vechiu I.,ESTIA Recherche | Baudoin S.,ESTIA Recherche | Camblong H.,ESTIA Recherche | And 2 more authors.
Journal of Power Sources

The increasing use of distributed generators, which are mainly based on renewable sources, can create several issues in the operation of the electric grid. The microgrid is being analysed as a solution to the integration in the grid of the renewable sources at a high penetration level in a controlled way. The storage systems play a vital role in order to keep the energy and power balance of the microgrid. Due to the technical limitations of the currently available storage systems, it is necessary to use more than one storage technology to satisfy the requirements of the microgrid application. This work validates in simulations and experimentally the use of a Three-Level Neutral Point Clamped converter to control the power flow of a hybrid storage system formed by a SuperCapacitor and a Vanadium Redox Battery. The operation of the system is validated in two case studies in the experimental platform installed in ESTIA. The experimental results prove the validity of the proposed system as well as the designed control algorithm. The good agreement among experimental and simulation results also validates the simulation model, that can therefore be used to analyse the operation of the system in different case studies. © 2013 Elsevier B.V. All rights reserved. Source

Etxeberria A.,ESTIA Recherche | Vechiu I.,ESTIA Recherche | Camblong H.,ESTIA Recherche | Camblong H.,University of the Basque Country | And 2 more authors.
Energy Conversion and Management

This work analyses the use of a Three-Level Neutral Point Clamped (3LNPC) converter to control the power flow of a Hybrid Energy Storage System (HESS) and at the same time interconnect it with the common AC bus of a microgrid. Nowadays there is not any storage technology capable of offering a high energy storage capacity, a high power capacity and a fast response at the same time. Therefore, the necessity of hybridising more than one storage technology is a widely accepted idea in order to satisfy the mentioned requirements. This work shows how the operational limits of the 3LNPC converter can be calculated and integrated in a control structure to facilitate an optimal use of the HESS according to the rules fixed by the user. © 2013 Elsevier Ltd. All rights reserved. Source

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