Diagnosis of PEM Fuel Cell Drying and Flooding Based on Power Converter Ripple



Dotelli, Giovanni, Ferrero, Roberto ORCID: 0000-0001-7820-9021, Stampino, Paola Gallo, Latorrata, Saverio and Toscani, Sergio
(2014) Diagnosis of PEM Fuel Cell Drying and Flooding Based on Power Converter Ripple. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 63 (10). pp. 2341-2348.

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Abstract

This paper discusses the possibility to use the current ripple introduced by switch mode power converters for low-cost monitoring of polymer electrolyte membrane (PEM) fuel cell (FC) state-of-health, suitable for commercial applications that cannot afford dedicated instrumentation. In more details, an estimate of the ohmic resistance, which is a good indicator of the membrane water content, can be obtained from the high-frequency ripple response by data processing in the frequency domain, while lower frequency ripple at 100/120 Hz (when present) is in the typical frequency range of activation processes. All the available impedance estimates, together with the dc voltage measurement, can be used to promptly detect FC drying and flooding, that are the two opposite failure modes as far as water balance is concerned. The proposed diagnostic approach is tested on a single PEM FC in drying and flooding conditions, by emulating three-phase and single-phase inverter ripples by means of an electronic load.

Item Type: Article
Uncontrolled Keywords: Diagnostics, fuel cell (FC), impedance spectroscopy, power converter, water management
Depositing User: Symplectic Admin
Date Deposited: 28 Apr 2017 08:18
Last Modified: 15 Mar 2024 01:27
DOI: 10.1109/TIM.2014.2318371
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3007159