Energy-efficiency improvement potential of electric vehicles considering transmission temperature
| Autor: | Theo Hofman, Caiyang Wei, R.L. van Iperen, E. Ilhan Caarls |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Battery (electricity)
0209 industrial biotechnology Cold start (automotive) Cold-start Transmission temperature Electric vehicles 020208 electrical & electronic engineering 02 engineering and technology Energy consumption Automotive engineering Power (physics) Optimal control 020901 industrial engineering & automation Energy efficiency Transmission (telecommunications) Control and Systems Engineering 0202 electrical engineering electronic engineering information engineering Environmental science Transient (oscillation) SDG 7 - Affordable and Clean Energy Energy (signal processing) SDG 7 – Betaalbare en schone energie Efficient energy use |
| Zdroj: | IFAC-PapersOnLine. 52(15):211-216 |
| ISSN: | 2405-8963 |
| Popis: | This study presents an integrated energy and transmission thermal management system to quantify the impact of a cold-start on the energy consumption of electric vehicles (EVs) from optimal control perspective. In addition, it provides insights into reducing this cold effect from design point of view. The cold-start conditions in an EV refer to a low transmission temperature, which increases the frictional power losses caused by viscosity effects in the transmission. These losses are eventually compensated by the battery, leading to excess energy usage. A detailed EV model, especially the transmission part with transient thermodynamics based on experiment data, is developed, and the integrated energy and thermal controller aims to maximize the energy efficiency. Numerical results show that a cold-start influences the energy-saving potential, up to 2.9%. Through analysis of temperature-dependent transmission behavior and energy losses of the EV, design considerations of reducing the cold impact, thus improving energy efficiency, can be derived. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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