two branches, electrically in parallel, and within which they are connected in electrical series. The total installed power is approximately 250 kW. Other auxiliary components make up the system, simulating installation in a boat:
Fuel cell system installed inside a container (8 ft) that is easy to move and place

  • Non oil-free industrial air compressor (12 Nm3 / min) with filters, with dynamics different from those necessary for the correct functioning of the fuel cells; it simulates the connection of the cathodic line to the air line present on board
  • Two groups of 25 compressed hydrogen cylinders at 200 bar simulating the fuel storage system
  • A resistive modular load to make the system perform at different operating profiles
  • Two-stage cooling circuit, to simulate heat exchange with a constant temperature source (sea water)

The plant control system is implemented through an HMI interface that acquires (with a frequency of 1 Hz) the status of the stack contactors, the current and cell voltage values (minimum, average and maximum) recorded for each stack, data on the temperature of the cooling circuit and the anodic and cathodic flow rates and pressures. A Labview interface has also been developed, that allows to acquire some of the system parameters with a higher frequency (5 Hz). The system’s control allows to promptly detect malfunctions and act on some of the operating parameters.