Title :
The parallel combination of a valve regulated lead acid cell and supercapacitor for use as a hybrid vehicle peak power buffer
Author :
Bentley, Paul ; Stone, David A.
Author_Institution :
Dept. of Electron. & Electron. Eng., Univ. of Sheffield
Abstract :
The performance of a standard, production valve regulated lead acid (VRLA) cell has been improved by paralleling with combinations of supercapacitors. The supercapacitors act to lower the source impedance of the combination providing a much-enhanced performance. Transient voltage swings are suppressed and the rms voltage is supported. Low temperature performance may also be improved due to the characteristics of the supercapacitor. These enhancements are described for various combinations of cell and supercapacitor under realistic hybrid vehicle power demands. A simple model is proposed and used to demonstrate supercapacitor size requirements for optimal current in the parallel cell
Keywords :
battery powered vehicles; hybrid electric vehicles; lead acid batteries; supercapacitors; VRLA cell; hybrid vehicle peak power buffer; hybrid vehicle power demand; supercapacitor; transient voltage swings; valve regulated lead acid cell; Battery powered vehicles; Fuels; Hybrid electric vehicles; Hybrid power systems; Low voltage; Road vehicles; Supercapacitors; Temperature; Valves; Vehicle driving; Hybrid electric vehicle; Modelling; Road vehicle; Supercapacitor;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219586
