Title :
Average model of dual active bridge interfacing ultra-capacitor in electrical vehicle
Author :
Amari, M. ; Khelifi, I. ; Bacha, F.
Author_Institution :
Lab. of Comput. for Ind. Syst., Univ. of Tunis, Tunis, Tunisia
Abstract :
In this paper a new bidirectional DC-DC converter is proposed to transfer energy between ultra-capacitor and DC bus in electric vehicle. We present the average model of this converter. This model is used to calculate the small signal and transient characteristics of the converter. The derived small signal model can be developed and the transfer function between the output voltage and the duty cycle is calculated. This function is used to design a PI controller to regulate the output voltage at desired voltage in the closed loop under load and input voltage variations with at short time response.
Keywords :
DC-DC power convertors; electric vehicles; supercapacitors; transfer functions; DC bus; PI controller design; average model; bidirectional DC-DC converter; closed loop system; dual active bridge interfacing ultracapacitor; duty cycle; electrical vehicle; input voltage variations; output voltage; output voltage regulation; short time response; small signal model; transfer function; transient characteristics; Bridge circuits; Capacitors; Equations; Mathematical model; Power conversion; Voltage control; Average model; Boost Mode Buck mode DC-DC converter; Dual Active Bridge; Small signal;
Conference_Titel :
Renewable Energy Congress (IREC), 2014 5th International
Conference_Location :
Hammamet
Print_ISBN :
978-1-4799-2196-6
DOI :
10.1109/IREC.2014.6826984
