Patent ID: 7973422
Filing Date: 2011-07-05
Classification: F01D,F02C,F05D,H02K,Y02T

Abstract:
1. A device for producing electrical power in a multi-spool gas turbine engine comprising: at least one first rotary spool; a second rotary spool; and a twin-rotor electrical machine driven by the first rotary spool and the second rotary spool, the electrical machine including a first rotor and a second rotor, wherein the first rotor is mechanically connected to the first rotary spool and the second rotor is mechanically connected to the second rotary spool, wherein the electrical machine is reversible, capable of operating as an electric generator when at least one of the rotors is driven by the rotary spool to which it is connected or alternatively of operating as a motor to drive at least one of the rotary spools, wherein the first rotor is concentric with the second rotor and disposed inside the second rotor.