Health Aware Optimisation of the Energy Management of a Fuel Cell – Battery Hybrid Electric Vehicle
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Typ
Examensarbete för masterexamen
Program
Systems, control and mechatronics (MPSYS), MSc
Publicerad
2021
Författare
Skvor, Eva
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The background of this thesis is the electric propulsion of heavy electric vehicles and the control
problem of the optimal power split between a Lithium-ion battery and a proton-exchange membrane
fuel cell system. Both the battery and the fuel cell degrade over time which impacts the resale value
as well as the efficiency and life-time of a vehicle. The goal of this thesis is to expand the controller
used at Volvo AB to include a cost for this degradation.
Three previous works, Hu et al. (2019) [18], Feng et al. (2020) [13] and Wang et al. (2020) [38],
are used as inspiration and to compare and evaluate the results.
The overarching conclusion is that including degradation in the objective function is a sound option
that decreases the total cost of ownership and increases the life time of the vehicle. Furthermore,
spending some time on formulating good control models to accomplish this is defendable as they,
according to this thesis, give better results than simple heuristic limitations on the use.
Besides this, a sound theoretical foundation and a discussion on how the degradation should be
modelled is carried out.
Beskrivning
Ämne/nyckelord
fuel cells , battery , degradation , optimisation , heavy truck , propulsion