Improving Electric Vehicle Energy Efficiency with Two-Speed Gearbox
| Autor: | Antti Lajunen, Kari Tammi, Heikki Laitinen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Electric motor
ta214 business.product_category Computer science electric vehicle 020302 automobile design & engineering 02 engineering and technology Energy consumption Automotive engineering efficiency map Traction motor 020303 mechanical engineering & transports 0203 mechanical engineering Electric vehicle Inverter business Driving cycle Energy (signal processing) two-speed gearbox Efficient energy use |
| Zdroj: | 2017 IEEE Vehicle Power and Propulsion Conference (VPPC). |
| DOI: | 10.1109/vppc.2017.8330889 |
| Popis: | This study investigated the possibility to increase electric vehicle's energy efficiency with a two-speed gearbox. The evaluation was based on simulations on a midsize electric vehicle model. Simulations were carried out in different driving cycles and optimal gearbox parameters were determined for each driving cycle. In Case 1) efficiency maps were used for the motor and inverter. In Case 2) the inverter efficiency was assumed constant and efficiency map was used only for the electric motor. The energy saving potential in different cycles was determined. The simulation results showed that a two-speed gearbox could improve energy efficiency. The improvement depends on the driving cycle and electric drive characteristics. |
| Databáze: | OpenAIRE |
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