초록 ▼

An arrangement is disclosed for ensuring an uninterrupted current supply to at least one electrical consumer which draws energy from an alternating voltage network and is supplied with energy in the event of a network failure by a fuel cell. The fuel cell (8) is connected at its electrical outputs t

An arrangement is disclosed for ensuring an uninterrupted current supply to at least one electrical consumer which draws energy from an alternating voltage network and is supplied with energy in the event of a network failure by a fuel cell. The fuel cell (8) is connected at its electrical outputs to at least one current inverter (7) whose output is connected to the minimum of one alternating voltage consumer (1, 2) and to a branch containing a switch (4) on the consumer side of the switch; the switch is connected to an alternating voltage network (6) and is opened in the event of the voltage in the alternating voltage network falling below a predetermined level and closed if the alternating voltage is above that threshold; and the fuel cell operates in stand-by mode if the network voltage is above the threshold, and, if voltage is below the threshold, in a mode in which the energy required by the consumer is supplied via the current inverter (7).

대표청구항 ▼

[ We claim:] [1.] An arrangement for an interruption-free energy supply to an electrical consumer, comprising:an a.c. voltage network,a protone exchange membrane fuel cell;a switch which connects the electrical consumer to said a.c. voltage network when the network voltage of said a.c. voltage netwo

[ We claim:] [1.] An arrangement for an interruption-free energy supply to an electrical consumer, comprising:an a.c. voltage network,a protone exchange membrane fuel cell;a switch which connects the electrical consumer to said a.c. voltage network when the network voltage of said a.c. voltage network lies above a threshold value and disconnects the electrical consumer from said a.c. voltage network when the network voltage of said a.c. voltage network lies below said threshold value; andan inverted rectifier connected to said fuel cell and to said switch, wherein:said fuel cell is maintained in a standby mode when the network voltage of said a.c. voltage network lies above said threshold value, andsaid fuel cell takes over the energy supply to the electrical consumer within a few milliseconds when the network voltage of said a.c. voltage network drops below said threshold value.