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Dynamic analysis and linear control strategies for proton exchange membrane fuel cell using a distributed parameter model

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Title Dynamic analysis and linear control strategies for proton exchange membrane fuel cell using a distributed parameter model
 
Creator METHEKAR, RN
PRASAD, V
GUDI, RD
 
Subject computer simulation
linear control systems
mathematical models
ion exchange membranes
 
Description To satisfy high power density demand in proton exchange membrane fuel cells (PEMFCs), a robust control strategy is essential. A linear ratio control strategy is examined in this work. The manipulated variables are selected using steady-state relative gain array (RGA) analysis to be the inlet molar flow rates of hydrogen and coolant, and the controlled variables are average power density and average solid temperature, respectively. By selecting proper manipulated variables, the PEMFC does not exhibit sign change in gain and hence can be controlled by using a linear controller. Transfer function models obtained from step tests on the distributed parameter PEMFC model are used to design controllers for the multiple input–multiple output (MIMO) system. In addition, a ratio control strategy is proposed and evaluated, where the inlet molar flow rate of oxygen is used as a dependent manipulated variable and changed in a constant ratio with respect to the inlet molar flow rate of hydrogen. Simulation results show that the ratio control strategy provides a faster response than a MIMO control strategy. This ratio control strategy is able to circumvent the problem of oxygen starvation, and the increase in average solid temperature is small as compared to the MIMO control strategy.
 
Publisher Elsevier
 
Date 2009-02-16T04:41:35Z
2011-11-25T16:53:24Z
2011-12-26T13:05:31Z
2011-12-27T05:52:38Z
2009-02-16T04:41:35Z
2011-11-25T16:53:24Z
2011-12-26T13:05:31Z
2011-12-27T05:52:38Z
2007
 
Type Article
 
Identifier Journal of Power Sources 165(1), 152-170
0378-7753
http://dx.doi.org/10.1016/j.jpowsour.2006.11.047
http://hdl.handle.net/10054/646
http://dspace.library.iitb.ac.in/xmlui/handle/10054/646
 
Language en