Cost functions for degradation control of electric motors in electric vehicles

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dc.contributor.authorSamaranayake, Lilantha
dc.contributor.authorLongo, Stefano
dc.date.accessioned2016-06-27T11:09:03Z
dc.date.available2016-06-27T11:09:03Z
dc.date.issued2015-11-16
dc.description.abstractThis paper introduces a novel set of electric motor degradation cost functions based on energy usage, energy loss and work output, against their continuous operation rated values recommended by the manufacturer. Unlike conventional electric motor degradation indicators such as the bearing life and insulation life based service factors, these cost functions account for the quantified time in the degradation process. The cost functions are evaluated throughout the operational life of the motor using real-time measurements. Hence, they give a very accurate indication, which may be adapted for online controller tuning. This solid establishment of a degradation cost function also enables the system designer to give the user a choice between performance and degradation minimization. The proposed cost function scheme has experimentally been verified using a hardware-in-the-loop electric powertrain test-rig where standard drive cycles are used to conduct the experiments. The experimental results reveal that the degradation cost functions Cumulative Input Energy Ratio (CIER), Cumulative Loss Ratio (CLR) and Cumulative Work Ratio (CWR) accurately represent the electric motor degradation both qualitatively and quantitatively.en_UK
dc.identifier.citationLilantha Samaranayake and Steano Longo. Cost functions for degradation control of electric motors in electric vehicles. European Control Conference, ECC 2015. 15-17 July 2015, Linz, Austria. pp660-665en_UK
dc.identifier.urihttp://dx.doi.org/10.1109/ECC.2015.7330617
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/10032
dc.publisherInstitute of Electrical and Electronics Engineersen_UK
dc.rights(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.titleCost functions for degradation control of electric motors in electric vehiclesen_UK
dc.typeConference paperen_UK

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