DocumentCode :
1408637
Title :
Predictive Control of Voltage and Current in a Fuel Cell–Ultracapacitor Hybrid
Author :
Greenwell, Wes ; Vahidi, Ardalan
Author_Institution :
Dept. of Mech. Eng., Clemson Univ., Clemson, SC, USA
Volume :
57
Issue :
6
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
1954
Lastpage :
1963
Abstract :
This paper presents a system integration and control strategy for managing power transients on a Nexa polymer electrolyte membrane fuel cell (FC) with the assistance of an ultracapacitor (UC) module. The two degrees of freedom provided by the use of two dc/dc converters enable the independent low-level control of dc bus voltage and the current split between the FC and UC. The supervisory-level control objectives are to respond to rapid variations in load while minimizing damaging fluctuations in FC current and maintaining the UC charge (or voltage) within allowable bounds. The use of a model predictive control approach which optimally balances the distribution of power between the FC and UC while satisfying the constraints is shown to be an effective method for meeting the supervisory-level objectives. The results are confirmed in experiments.
Keywords :
DC-DC power convertors; electric current control; predictive control; proton exchange membrane fuel cells; supercapacitors; voltage control; DC bus voltage; DC-DC converters; Nexa polymer electrolyte membrane fuel cell; current control; fuel cell ultracapacitor; independent low-level control; power transient management; predictive control approach; supervisory-level control objectives; voltage control; Energy management; fuel cell; model predictive control; ultracapacitor;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2009.2031663
Filename :
5247112
Link To Document :
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