Li-ion Battery Emulator for Electric Vehicle Applications

The Lithium-ion batteries are becoming increasingly used like an energy storage system for electric vehicles. This kind of batteries exhibits many advantages such as high energy density, no memory effect, high operation voltage, etc ... On the other hand, the cost of this battery is higher compared to the other technologies and needs a good management using a battery management system (BMS). For that, the emulation of this component can decrease the development cost. In this paper a particular battery emulator based on power electronics device with an improved battery model will be presented. The developed system allows user to test the electrical vehicle at various battery behavior or ambient conditions. The advantage of this system is their ability to vary the internal parameters of the battery and also the creation of a default safely. The experimental results obtained with a dSPACE 1104 controller board show a well performance of the battery emulator and confirm the feasibility of our system.