Title :
Optimal power split and sizing of hybrid energy storage system for electric vehicles
Author :
Junyi Shen ; Hasanzadeh, Amin ; Khaligh, Alireza
Author_Institution :
Energy Harvesting & Renewable Energies Lab., Univ. of Maryland, College Park, MD, USA
Abstract :
This paper targets the interdependence between sizing and power split optimization of hybrid energy storage systems (HESS) in electric vehicles (EV). In particular, a high energy (HE) density battery and an ultracapacitor (UC) hybrid system is investigated as a benchmark. A convex optimization problem is formulated to optimize the power split between battery and UC offline. Based on the power split optimization result, a HESS sizing optimization problem is developed to minimize the HESS weight and to fulfill the EV specifications of driving range and acceleration time.
Keywords :
battery powered vehicles; convex programming; secondary cells; supercapacitors; EV; HE density battery; HESS optimal power sizing optimization problem; UC hybrid energy storage system; convex optimization problem; electric vehicles; high energy density battery; optimal power split optimization problem; ultracapacitor hybrid system; Acceleration; Batteries; Convex functions; Optimization; Power demand; Vehicles; HESS sizing; convex optimization; electric vehicles; power split; ultracapacitor;
Conference_Titel :
Transportation Electrification Conference and Expo (ITEC), 2014 IEEE
Conference_Location :
Dearborn, MI
DOI :
10.1109/ITEC.2014.6861861
