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Water flooding is one of the main causes of performance degradation for polymer electrolyte membrane (PEM) fuel cells and its prompt detection is therefore important to guarantee optimal fuel cell operation. This paper aims at comparing the most common methods for flooding diagnosis, which are based on electrical or gas pressure measurements. Some critical issues about them are discussed, highlighting...
This paper reapproaches the possibility to use the current ripple introduced by power conditioning devices on fuel cells for a low-cost monitoring of the cell ohmic resistance, suitable for commercial applications. Being the ohmic resistance strongly dependent on the membrane water content, this technique can be usefully employed as a diagnostic tool for membrane humidity control. The proposed method...
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