Double-Tiered Switched-Capacitor Battery Charge Equalization Technique
Baughman, A.C.
Ferdowsi, M.
Gen. Motors Corp., Detroit, MI;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: June 2008
Volume: 55,
Issue: 6
On page(s): 2277-2285
ISSN: 0278-0046
INSPEC Accession Number: 10006638
Digital Object Identifier: 10.1109/TIE.2008.918401
Current Version Published: 2008-05-28
Abstract
The automobile industry is progressing toward hybrid, plug-in hybrid, and fully electric vehicles in their future car models. The energy storage unit is one of the most important blocks in the power train of future electric-drive vehicles. Batteries and/or ultracapacitors are the most prominent storage systems utilized so far. Hence, their reliability during the lifetime of the vehicle is of great importance. Charge equalization of series-connected batteries or ultracapacitors is essential due to the capacity imbalances stemming from manufacturing, ensuing driving environment, and operational usage. Double-tiered capacitive charge shuttling technique is introduced and applied to a battery system in order to balance the battery-cell voltages. Parameters in the system are varied, and their effects on the performance of the system are determined. Results are compared to a single-tiered approach. MATLAB simulation shows a substantial improvement in charge transport using the new topology. Experimental results verifying simulation are presented.
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
