Generator for gas turbine engine having DC bus fault short circuit control using a battery

摘要

An aircraft electrical system comprises a generator (28) to be driven as part of a gas turbine engine (24). The generator supplies electrical power to a plurality of accessories (38, 42, 46) associated with the gas turbine engine, and to an aircraft DC bus (22) in parallel to the supply to the accessories. A battery (58) supplies voltage to a control circuit (48) for the generator through a selectively opened and closed switch. A control detects a short circuit on the aircraft DC bus. A battery switch allows power from the battery to flow to provide control voltage for the generator when the control detects a short circuit on the aircraft DC bus.