GAS TURBINE ENGINE STARTER-GENERATOR AND METHOD OF ITS CONTROL Russian patent published in 2014 - IPC F02N11/14 H02P1/50 H02K19/14 

FIELD: engines and pumps.

SUBSTANCE: invention relates to gas turbine engine starter-generator. Starter-generator comprises primary electrical machine including stator and rotor with inductor and damper rods that make the cage, excitation unit including stator inductor, rotor with rotor windings connected with rotor inductor of said primary electrical machine via rotary rectifier. At first stage of starting phase the primary electrical machine is changed over to induction motor mode by AC feed to its stator windings. Note here that starting moment is generated with the help of damper rods. At second stage of second starting phase, said primary electric machine is changed over to synchronous motor mode by AC feed to stator windings simultaneously with DC feed via excitation unit to rotor inductor. Note here that instruction on changeover from starting first stage to second stage is generated when shaft rpm reached a definite magnitude.

EFFECT: stator-generator without short-circuiting of rotor inductor at starting, higher reliability.

9 cl, 6 dwg