Patent ID: 7728447
Filing Date: 2010-06-01
Classification: H02K

Abstract:
1. An assembly comprising a gearbox for a gas turbine having a geartrain with a plurality of gearwheels housed in a casing, and at least one starter/generator comprising a generator with a rotor forming a primary magnetic circuit and a stator forming a secondary magnetic circuit, and an exciter with a stator forming a primary magnetic circuit and a rotor forming a secondary magnetic circuit, the starter/generator comprising: a first module or generator module comprising a first casing connected to the casing of the gearbox, the generator housed in the first casing and a first shaft constrained to rotate with the rotor of the generator projecting from the first casing and carrying a first mechanical coupling member; a second module or exciter module, comprising a second casing connected to the casing of the gearbox, the exciter housed in the second casing, and a second shaft constrained to rotate with the rotor of the exciter, the second shaft being distinct from the first shaft, projecting from the second casing, and carrying a second mechanical coupling member; and an electrical connection comprising a rectifier and at least one connector for connecting the secondary circuit of the exciter to the primary circuit of the generator, wherein the first and second shafts share a common axis and are coupled to a common gearwheel of the gearbox, and the casings of the first and second modules are separately connected to the casing of the gearbox on opposite sides thereof.