Author(s)

Yutaro Akimoto, Keiichi Okajima

Graduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Japan.

In this paper, the current distribution in a 300-W-class PEMFC stack was investigated in order to determine the operating state of the stack. Measurements of the magnetic field were performed on several cells in the stack. The vector of the magnetic field expressed the direction of the macroscopic current, which was from the anode side to the cathode side. This direction matched the polarity of the stack. In the measurement results, current distributions differed among cells; each cell had a different performance. Furthermore, we have tried to evaluate faults, such as flooding, by measuring the magnetic field and variations in the voltage.

PEMFC, In-Situ Diagnosis, Current Distribution, Flooding, Magnetic Sensor

Akimoto, Y. and Okajima, K. (2015) Experimental Study of Non-Destructive Approach on PEMFC Stack Using Tri-Axis Magnetic Sensor Probe. Journal of Power and Energy Engineering, 3, 1-8. doi: 10.4236/jpee.2015.33001.