To ensure the design and manufacturing of quality fuel cells, EA Elektro-Automatik offers its EA-PSB 10000 2-quadrant power supplies and EA-ELR 10000 series electronic loads. Both the EA-PSB power supplies and the EA-ELR loads sink up to 30 kW and feed the energy back to the grid to enable testing of any size fuel cell stack
Both the PSB power supplies and the ELR electronic loads have built-in function generators that include arbitrary waveform generation, which simplifies characterization, performance, and durability testing of fuel cells. Unlike other loads that need a separate AC instrument, the ELR load, with its built-in waveform generator, can perform the perturbation test to determine fuel cell resistance. In addition, both the PSB supplies and the ELR loads, with their built-in waveform generators, can subject the fuel cell-under-test to dynamic load variations for performance and durability testing.
The PSB DC supply also has an internal X-Y generator that allows the supply to simulate the output of a fuel cell. At various voltages, the PSB supply can vary its output resistance to generate a current characteristic of the fuel cell at the programmed voltage. Thus, the PSB supply can emulate the three phases of a fuel cell’s characteristic output. The PSB supply can add ripple and noise onto its output to determine how well a fuel-cell powered device can perform under a wide range of conditions.