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AssigneeSnecma
InventorsAntoine Olivier Francois Colin, Arnaud Lebrun, Gilles Barjon
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The invention relates to a device for producing electrical power in a multi-spool gas turbine engine comprising at least one first rotary spool (69), for example a low-pressure spool, and a second rotary spool (24), for example a high-pressure spool, and driving an electrical machine (10). The device is one wherein, with the electrical machine (10) being of the twin-rotor type with a first rotor (13) and a second rotor (14), the first rotor (13) is mechanically connected to the first rotary spool (69) and the second rotor is mechanically connected to the second rotary spool (24).
A device for producing electrical power in a multi-spool gas turbine engine comprising at least one first rotary spool, for example a low-pressure spool, and a second rotary spool, for example a high-pressure spool, and driving an electrical machine, wherein, with the electrical machine being of the twin-rotor type with a first rotor and a second rotor, the first rotor is mechanically connected to the first rotary spool and the second rotor is mechanically connected to the second rotary spool and 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.
The device as claimed in the preceding claim, in which the rotors are mechanically connected to the rotary spools by speed reducing gearboxes.
The device as claimed in one of the preceding claims, in which the mechanical transmission between the first rotor and the first rotary spool comprises a brake via which the first rotary spool can be kept stationary.
The device as claimed in one of the preceding claims, in which the first rotor is concentric with and inside the second rotor.
The device as claimed in one of the preceding claims, in which the brake consists of a ratchet wheel.
The device as claimed in one of the preceding claims, in which the first rotor is a permanent magnet rotor.
A two-spool gas turbine engine comprising at least one auxiliary electrical machine as claimed in one of the preceding claims.
The gas turbine engine as claimed in the preceding claim, of the two-spool type, the first spool of which is the low-pressure spool and the second spool of which is the high-pressure spool.
Dependencies are inferred from the claim text.