This research aims the improvement of energy storage system’s performances in electric vehicles. Actually, these vehicles only use batteries as energy reservoir. The battery pack sizing is a compromise between the energy quantity and the power available. But, by adding supercapacitors to the storage system, each source has its own function. Batteries give the vehicle energy and mean power, and supercapacitors give high peak power required by acceleration and braking. Therefore, the sources’ sizing is optimal and battery lifetime is increased by electrical and thermal stresses reduction.
The goal of this research is to develop a battery/supercapacitor hybrid electrical storage system (HESS) for electric vehicles. It will be compared to a battery only storage on cost, lifetime, efficiency, volume, mass and reliability.
Different design possibilities of the hybrid electrical storage system are studied. Among them, there are the HESS topologies, the control strategies and the converter topologies. Also, a complete chapter focuses on the converter design. High level and converter level simulations allow to choose the best design solutions. Finally, the chosen system is tested in a laboratory to validate the simulated results.
The conclusion is that a hybrid electrical storage system is profitable in the long term compared to a battery only storage.
| Date | 27 Jun 2012 |
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| Original language | French |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | Kamal Al-Haddad (Supervisor) |
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Ammann, F. (Author),
Al-Haddad (Supervisor),
27 Jun 2012Student thesis: Master's thesis › Master in Engineering: Electrical Engineering