An aircraft electrical generator supplemented by an energy store until the generator is ramped up to meet the load requirement.

摘要

An aircraft electrical system 210 comprises a first electrical generator 212 driven by an engine and an energy store 226. A control system monitors the power output of the generator and the power requirement of the loads. If the load demand exceeds the generator 212 output, the energy store 226 provides the required power until the generator 212 output is increased to meet the load demand. The engine speed or compressor pressure ratio may be monitored to determine power output and demand. The engine speed may be increased to charge the energy store 226 as well as meet the load demand. An AC bus 220 and a DC bus 222 may be provided, with a bi-directional convertor 224 between the two. The engine may be started by a motor powered by the energy store 226. The energy store 226 may be a battery or a flywheel. The flywheel may be charged by an auxiliary power unit or by the first electrical generator 212 and may drive an inductive generator.