MEASUREMENT OF FUEL CELL IMPEDANCE

摘要

This invention discloses a self-contained, portable, cost-effective apparatu s for measuring the real and imaginary components of a fuel cell's complex impedance at discrete frequencies. The apparatus comprises a CPU, a signal generation device, a fuel cell, a load bank, current and voltage sensing circuitry and a waveform acquisition device. The measurements can be done in real time and automated. The fuel cell's internal resistance can be calculat ed thereby providing an indication of the electrical efficiency of the fuel cel l.