Patent ID: 11955835
Assignee: ABB SCHWEIZ AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 12:
13. A method for injecting electrical power from at least one fuel cell module into a ring bus architecture, the ring bus architecture comprising:
a ring bus;
a plurality of static uninterruptible power supplies (UPSs), each static UPS of the plurality of static UPSs comprising:
at least one battery;
an input that is electrically connected to respective external electrical power source; and
an output that is electrically connected to a respective load, and, via a first corresponding unswitchable choke, without any intervening switch to the ring bus,

the method comprising:
electrically connecting the at least one fuel cell module in series with a corresponding fuel-cell interface converter (FIC) that converts direct current (DC) electrical power to alternating current (AC) electrical power and a second corresponding unswitchable choke without any intervening switch to the ring bus; and
starting the at least one fuel cell module
wherein each corresponding FIC supplies the AC electrical power to one or more respective loads indirectly via the ring bus and does not directly supply any other AC electrical load.