DocumentCode :
424676
Title :
Load governor for fuel cell oxygen starvation protection: a robust nonlinear reference governor approach
Author :
Sun, Jing ; Kolmanovsky, Ilya
Author_Institution :
Dept. of Naval Archit. & Marine Eng., Michigan Univ., Ann Arbor, MI, USA
Volume :
1
fYear :
2004
fDate :
June 30 2004-July 2 2004
Firstpage :
828
Abstract :
The fuel cells oxygen starvation problem is addressed using a robust load governor. By regulating the current drawn from the fuel cell, the pointwise-in-time constraints on the oxygen excess ratio and on the oxygen mass inside the cathode are strictly enforced to protect the fuel cells from oxygen starvation. The load governor is designed using a nonlinear reference governor approach. Parameter uncertainties such as those due to imperfect controls of temperature and humidity are handled in the load governor design using a novel approach based on sensitivity functions. Simulation results are included to demonstrate the effectiveness of the proposed scheme. The results are compared with those of a linear filter, which has been proposed in the prior literature to achieve similar goals.
Keywords :
cathodes; control system synthesis; electric current control; electrochemical electrodes; fuel cells; humidity control; load regulation; nonlinear control systems; oxygen; robust control; temperature control; cathode; fuel cell oxygen starvation protection; humidity control; linear filter; load governor; oxygen excess ratio; oxygen mass; pointwise-in-time constraint; temperature control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference, 2004. Proceedings of the 2004
Conference_Location :
Boston, MA, USA
ISSN :
0743-1619
Print_ISBN :
0-7803-8335-4
Type :
conf
Filename :
1383708
Link To Document :
بازگشت