This work aims to develop a model capable of calculating the energy consumption of an electric car. The goal is a method of calculating the energy needs for a certain trip and presenting recommendations for a more efficient driving mode. The purpose of the work is to create a tool to help drivers use less energy and identify problems when developing such a tool. The model is based on a power equation which considers air resistance, rolling resistance, height differences and acceleration. A model of regenerative brakes is also developed in order to account for regained kinetic energy. Using map data, a routing tool is developed to allow input of a trip which the model can calculate energy needs for. The model shows for an example car Porsche Taycan 4S over a specific test-trip an energy consumption of 128.65 Wh/km and a 3% energy savings in relation to energy efficient driving. When evaluating the model against the Urban Dynamometer Driving Schedule (UDDS) and the New European Driving Cycle (NEDC) estimated driving ranges corresponding to 493.3 km and 521.2 km respectively, in relation to official statistics of 396 km. Finally, findings during development, problems with the model and recommendations are discussed.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-348404 |
| Date | January 2024 |
| Creators | Liljenström, Wilmer |
| Publisher | KTH, Skolan för teknikvetenskap (SCI) |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | TRITA-SCI-GRU ; 2024:237 |
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