Editorial - Electrical machines and drives for the more electric aircraft

The ´More Electric Aircraft´ is a term used to describe an aircraft in which electrical power is employed for a range of primary functions, including actuation, de-icing, cabin air conditioning and engine start. This has revolutionised the engine control and has removed the need for hydraulic and bleed air systems. The motivation is strong: the More Electric Aircraft promises reduced fuel burn, higher reliability and reduced cost of ownership. However, the challenges are enormous. Power electronically controlled machines must operate in extreme environments, have minimal weight and also provide reliability much greater than has hitherto been produced by industrial drives.