Energy Management in Hybrid Electric Vehicles Based on Frequency Approach Compared to Dynamic Component Method -Lithium-Battery and Ultracapacitors
Résumé
This paper presents a comparative study between the frequency approach and dynamic component method for energy management in Hybrid Electric Vehicles (HEVs). An auxiliary energy system based on ultracapacitors (U), and the High Energy Storage system focused on lithium-battery are used to share the requested energy by a vehicle. Ultracapacitors are linked to DC-bus through a bidirectional converter, and the lithium-battery is directly linked to DC-bus without a converter. An inverter and Electrical Machine (EM) are used to emulate the energetic demand of the Hybrid Electric Vehicle (HEV). The contribution of this paper is focused on a HEV power sharing between the ultracapacitors and the battery according to the dynamic responses of the sources. The performances of the proposed methods are evaluated through some simulations and experimental tests using United States drive cycle.
Mots clés
Supercapacitors
Energy management
Batteries
Vehicle dynamics
Hybrid electric vehicles
Load modeling
Current measurement
battery powered vehicles
electric machines
energy management systems
hybrid electric vehicles
invertors
secondary cells
supercapacitors
energy management
HEV power sharing
dynamic component method
lithium battery
ultracapacitors
auxiliary energy system
high energy storage system
DC bus
bidirectional converter
inverter
electrical machine
dynamic responses
United States drive cycle