By Evgeni Ganev IMAGE LICENSED BY GRAPHICSTOCK Selecting the best electric machines for electrical PowerGeneration Systems High-performance solutions for aerospace More electric architectures. HE ELECTRIC MACHINES (EMs) FOR HIGH-PERFORMANCE ELECTRICAL power-generation systems (EPGSs) play a significant role in the modern aerospace and military industries. This is particularly true in the area of More Electric Architecture (MEA) for aircraft, spacecraft, and military ground vehicles. The commercial aircraft business is moving toward nobleed air environmental control systems, variable-frequency and dc power-distribution buses, and electrical actuation. A typical example is the Boeing 787 platform. The nextgeneration Boeing narrow-body airplane (the replacement for the 737) and the Airbus replacement for the A320 will most likely use MEA. Some military aircraft already use MEA for both primary and secondary flight control. Military ground vehicles have migrated T Digital Object Identifier 10.1109/MELE.2014.2364731 Date of publication: 9 February 2015 2325-5987/14©2014IEEE IEEE Elec trific ation Magazine / d ec em be r 2 0 1 4 13