| 摘要 |
PROBLEM TO BE SOLVED: To stabilize output by enhancing the effectiveness of suppression of over-drying and over-wetting of an electrolyte membrane during load variation transition period.SOLUTION: When performing increase and decrease control of gas flow rate and gas pressure under transient situation of load variation, depending on the load variation, a fuel cell stack shifts the change timing of gas pressure rate increase and decrease change to the delay side, for the change timing of gas flow rate increase and decrease change beneficial for shifting over-wetting or over-drying to the proper wetting side. If the gas pressure increase and decrease is beneficial for shifting the over-wetting or over-drying to the proper wetting side, the change timing of gas flow rate increase and decrease is shifted to the delay side, for the change timing of the gas pressure increase and decrease change.SELECTED DRAWING: Figure 5 |
