Balance of Plant Concerns with Transportation-Based PEM Fuel Cell System Operation in Freezing Environments

Author(s):  
James Fletcher ◽  
Sydni Credle ◽  
Cheng-Chan Kuo ◽  
William Lear
2017 ◽  
Vol 195 ◽  
pp. 324-333 ◽  
Author(s):  
Dirk Jenssen ◽  
Oliver Berger ◽  
Ulrike Krewer

Author(s):  
Richard T. Meyer ◽  
Shripad Revankar

Proton Exchange Membrane (PEM) fuel cell system performance can be significantly improved with suitable control strategies. Control appropriate models of the fuel cell stack and balance of plant are presented along with current control research. Fuel cell stack models are zero dimensional and range from simple empirical stack polarization curves to complex dynamic models of mass flow rates, pressures, temperatures, and voltages. Balance of plant models are also zero dimensional and can be used individually to build a complete system around a stack. Models of this type are presented for the air compressor, air blower, manifolds, reactant humidification, fuel recirculation, air cooling, and stack cooling. Current control work is surveyed with regard to feedforward, feedback, observers, optimization, model prediction, rule based, neural networks, and fuzzy methods. The most promising fuel cell stack model is evaluated. Additionally, improvements to the balance of plant models are recommended. Finally, future control work is explored with a desire for system control that leads to greater output power.


Author(s):  
Erik Snyder ◽  
Thomas R. Lalk ◽  
A. J. Appleby

A novel anode feed gas humidification method was investigated as part of an effort to reduce the mass, volume, and cost of the balance of plant for a commercial PEM fuel cell system. Ultrasonic fountain nebulization was utilized to ultrahumidify the anode feed gas for a PEM fuel cell. Ultrasonic nebulization ultrahumidification was found to increase the average voltage of the fuel cell by several percent, and reduce the amplitude of cyclic overvoltage. Most importantly, this humidification technique greatly increased the thermal fault tolerance of the PEM fuel cell; that is, this humidification technique allowed the PEM fuel cell to operate effectively at high temperatures without a need to increase the vapor pressure of the humidification water. In addition, this humidification technique shows potential to be used to increase the overall energy conversion efficiency of a PEM fuel cell system.


2021 ◽  
Vol 7 ◽  
pp. 3199-3209
Author(s):  
Junlong Zheng ◽  
Yujie Xie ◽  
Xiaoping Huang ◽  
Zhongxing Wei ◽  
Bahman Taheri

2019 ◽  
Vol 12 (1) ◽  
pp. 671-680
Author(s):  
Ju-Yong Kim ◽  
SungChul Lee ◽  
WooCheol Shin ◽  
YongGul Lee ◽  
DongHyun Kim

Fuel Cells ◽  
2014 ◽  
Vol 14 (3) ◽  
pp. 466-478 ◽  
Author(s):  
S. Strahl ◽  
A. Husar ◽  
P. Puleston ◽  
J. Riera

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