| 摘要 |
PROBLEM TO BE SOLVED: To provide an impedance measuring method for calculating a highly accurate impedance in a short time by simple device and configuration.SOLUTION: In the impedance measuring method for a fuel cell in a fuel cell system including a fuel cell and supplying power to a load, time series data of the current and voltage of the fuel cell during the hunting phenomenon occurred when the load varies are acquired. The time series data of the current and voltage are subjected, respectively, to arithmetic processing by FFT method, and the impedance is calculated by two data thus processed. |
