Work Package 5 : Ground Confrontation of the Four Scenario Issues and Critical Study into Value Keeping

Lead beneficiary : Oscaro Power

This WP supports companies to identify the opportunities created by VIVAE objectives in each WPs: for PE systems capacity to evolve with users, adapt their processes to the resources constraints (scarcity), create new industrial symbiosis (flow/product/process mutualizations), develop reparation processes, etc. Due to their complementary approach of circularity and their different position in the value chain, OSCARO and EATON will propose different views on the VIVAE proposals. Indeed, these two players have developed partnerships and expertise specific to their markets. VIVAE will therefore be able to rely on the knowledge that will guarantee the “on ground” critical analysis of the operational viability of scenarios in synergies with the existing industrial contexts (value chain stakeholders). Especially, thanks to the work carried out in WP 1 to 4, the four scenarios a), b), c) and d) presented above will be benchmarked to identify which one(s) could be viable over time and with respect to regulations. Testing scenarios will help securing compatible development, conceptual and technological options made during the project. Considering the diversity of power electronics applications, this work will be carried out based on the specificities of a case study chosen to implement such or such approach, presented in Table 1. Each scenario therefore corresponds to a task. The objectives associated to each task are described below. The industrial partners are playing a key role for guarantying the operationalization of each scenarios.

WP5.1 action: To enable the maintainability of the PE device and support its process Case Study

Photovoltaic string Single-phase inverter or UPS inverter: This study case is chosen because of the particular constraints of this application for which clearly physically identifiable different sub-blocks, filtering, storage, decoupling, are necessary and do not present the same level of reliability. This WP will therefore focus on enabling preventive and curative maintenance in this kind of function.

Objectives:

  • Extra cost evaluation on the value chain of the implementation of a distant monitoring (OSCARO Power)
  • Customer behaviour impact evaluation of the maintainability of the PE device (OSCARO Power)
  • Additional costs and functional performance losses evaluation due to the converter sub-functions separation according to the constitutive functional reliability (EATON)
  • Design for maintainability guideline operationalisation evaluation in industry (OSCARO Power + EATON)
  • Environmental impact indicators identification for supporting an environmentally efficient maintained PE devices life cycle process (OSCARO Power+EATON)

WP5.2 action : To enable the device integration into a second life cycle

Case Study

from UPS to inverter for residential storage; from car inverter to inverter for high voltage storage (400V) in hybrid systems. For both of these cases, the level of reliability and of technological constraint is considerably reduced when considering the first and second life applications. This is why it is possible to consider the reuse of all or part of a converter in a second product

Objectives:

  • Recovery supply chain implementation simulation to enable second life cycle services (EATON)
  • Requalification procedure implementation simulation for guaranteeing second life products performances (EATON)
  • Customer interest assessment for second life products systems scenarios (OSCARO Power)
  • Life cycle assessment of second life products systems scenarios (attributional LCA, forecasting consequential LCA data inventories) (OSCARO Power + EATON)
  • Environmental impacts indicators identification for an efficient second life cycle environmental impact management during design, in companies (OSCARO Power + EATON)

WP5.3 action : To support the remaining value of products and components in additional systems

Case study

PV string inverter or UPS battery charger: These applications are representative of the diversity of subsystems and components present in PE converters and their level of standardisation can be significant due to the large number of products sold each year, making a components or sub-systems second-hand market possible.

Objectives:

  • Second-hand components integration into new products opportunities evaluation : functional, environmental and technical considerations (EATON)
  • Recovery and requalification supply chain process of components or sub-systems modelling, including the operational management process required (EATON)
  • Components and subsystems residual value evaluation. Establishment of an appropriate argus-type indicator associated to environmental impact indicators (EATON)
  • Environmental value evaluation : testing design for remaining value guidelines within designers’ activities (OSCARO + EATON)
  • Forecasting consequential LCA data inventories for conducting appropriate LCA enabling an environmentally aware life cycle supply chain management process in PSS (OSCARO Power + EATON)

WP5.4 To extract from the device some specific material flows

Case Study:

a modular PE converter (e.g. in the photovoltaic single-phase inverter, the UPS or the battery charger): In some applications, such as those mentioned here, a high degree of integration may be required. In these conditions, the separation of components or even materials may be difficult at the end of the product’s life. The objective of this WP is to propose guidelines to improve the design for this separation.

Objectives:

  • Application of the design guidelines to extracts components, sub-components, etc. (e.g. with ECOSYSTEM and ECOLOGIC support, in collaboration with OSCARO Power and EATON)
  • Qualification evaluation, and environmental impact assessment in LC scenarios : end of life data inventories hypothesis for material circularity (e.g. with ECOSYSTEM and ECOLOGIC)
  • Product design feedbacks (or guidelines) development for the initial products and subsystems designs to improve the material flows circularity (OSCARO Power + EATON)

WP5 outputs

From the WP5 outputs several PE based product systems circular value chain generalization should be envisaged based on each life cycle scenarios objectives outputs. The formalisation of each study case output will be conducted in the WP1-4 respectively in an interactive manner with WP5. The WP5 operates as an in-ground confrontation of the science-based and laboratory-based propositions guaranteeing the potential integration of these project developments in the society.