Behavior Comparison of Hybrid Energy Storage Systems for Pulsed Loads in Electric Vehicles

Pulsed loads are widely diffused on board of the electric vehicles and are related to different devices adopted or to the propulsion/traction performance of the vehicles (e.g. the power required in a vertical take-off by an UAV). This impulsive behavior plays a crucial role for the correct management and sizing of energy storage systems: usually, the combination of different type of storage systems are adopted with the aim to improve the performance of the system, reducing the weight and the occupied volume. The paper proposes the analysis of different configuration of hybrid storage system, based on lithium-ion batteries and supercapacitors, able to supply a power pulsed load: the aim is the investigation of the different behavior of the configurations considering also the dynamic influence of the control in the power supply of the pulsed load. The results are obtained using numerical simulations.