Electrical current power production unit for emergency systems with fuel cells has electrical store and control systems and power adjusting units to suit the output

摘要

An electrical power production unit (10) comprises a power bus and at least two fuel system stacks (14) and electrical energy store (24) and control (28) systems. Power adjusting units connect to the bus with an input voltage and total nominal output and the number of fuel cells connected to the bus and number of adjusting units changes with need.