PEM Fuel Cell Drying and Flooding Diagnosis With Signals Injected by a Power Converter

被引:31
|
作者
Dotelli, Giovanni [1 ]
Ferrero, Roberto [2 ]
Stampino, Paola Gallo [1 ]
Latorrata, Saverio [1 ]
Toscani, Sergio [3 ]
机构
[1] Politecn Milan, Dept Chem Mat & Chem Engn G Natta, I-20133 Milan, Italy
[2] Univ Liverpool, Dept Elect Engn & Elect, Liverpool L69 3BX, Merseyside, England
[3] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, I-20133 Milan, Italy
关键词
Diagnostics; fuel cell (FC); impedance spectroscopy; power converter; water management; STATE-OF-HEALTH; CONTROL STRATEGY; ROTOR FAULTS; MODEL; TOOL;
D O I
10.1109/TIM.2015.2406051
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, a low-cost approach for polymer electrolyte membrane fuel cell (FC) drying and flooding diagnosis based on power converter ripple is presented, suitable to be implemented in commercial applications. If proper signal processing algorithms are employed, the high-frequency ripple inherently produced by switch-mode converters allows one to monitor the FC ohmic resistance, which is a good indicator for membrane drying, while an ad hoc switching control of the converter allows one to monitor also the low-frequency impedance, which is an indicator for cell flooding. This technique is tested with a dc/dc boost converter directly connected to a single cell, discussing how different FC operation modes (such as constant current or constant voltage) may affect the sensitivity required to the diagnostic algorithm to correctly recognize drying and flooding occurrences.
引用
收藏
页码:2064 / 2071
页数:8
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