Experimental investigation of stable the proton exchange membrane fuel cell control using magnetic sensor probes

In proton exchange membrane fuel cells (PEMFCs), the avoidance and detection of failures such as flooding and dry‐out are crucial. Non‐destructive measurement approaches using magnetic sensors have been developed for this purpose. To reduce the number of sensors required to be installed in a PEMFC system for evaluation, we propose a control method for PEMFCs using the magnetic flux density as an index. The proposed method determines the failure conditions by calculating a simple current mapping with a reduced number of sensors. The results of four‐point magnetic flux densities under failure conditions and stable control using two‐point measurement indices are presented.