D1.3 Final report

Executive summary

Nowadays, road transport relies almost exclusively on fossil fuels. In fact, road transport is responsible for one-fifth of the EU's total emissions of carbon dioxide, and these emissions have increased by 26% since 1990. Thus, to achieve the 2020 target of reducing energy consumption and CO2 emissions, Fully Electric Vehicles (FEVs) need to reach a significant market share.

Progress towards mass production of FEVs presents vehicle manufacturers with new challenges due to the relative immaturity of the new technologies that are involved. The most notable of these is the electric powertrain, comprising the electric traction machine and its associated power electronics.

One of the main objectives of the HEMIS project is therefore to design an in-vehicle Prognostic Health Monitoring System (PHMS) for the electric powertrain in order to enhance the safety and maintainability of FEVs. This system is able to analyze the condition of the powertrain by monitoring selected physical characteristics. It also estimates the remaining useful life (RUL) of some components, thus enabling a predictive maintenance policy. The PHMS informs the vehicle about the degradation state and RUL of the powertrain’s components through vehicle CAN Network, so that the vehicle can be set to a safe estate when necessary and the driver can be informed about the vehicle condition. In order to define the components and failure modes to be monitored, a generic architecture of a FEV is first defined and thoroughly analysed.

The specifications for the PHMS is established together with members of an Industrial Advisory Panel (IAP), made up of representatives of industrial companies that are leaders in the sector and that have signed an agreement of collaboration with the HEMIS project. Moreover, they provide their expertise to keep the research focused on the European Automotive industry.

The HEMIS project has a second main objective. The electromagnetic fields emitted by the electric powertrain and their possible effects on the human body, as well as any interference with other systems on the vehicle, are to be analyzed by means of both measurements and complex simulations. It will then been assessed whether these fields, which may differ from those in a conventional car, can exceed current standards. For that case, HEMIS project proposes to recommend adaptations to the automotive standards so that the electromagnetic field is always below acceptable limits. Besides, guidelines regarding EMF testing methods and mitigation techniques will be available on the project website.



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Project acronym:

Project name:
 Electrical powertrain Health Monitoring for Increased Safety of FEVs

Project reference:

Start date: 01/06/2012
End date: 28/02/2015

Sponsored by

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