US 12,281,621 B2
Method for controlling a turbomachine comprising at least one electric machine, and associated control system
Jean-Marie Kai, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR)
Appl. No. 18/559,218
Filed by SAFRAN, Paris (FR)
PCT Filed May 4, 2022, PCT No. PCT/FR2022/050861
§ 371(c)(1), (2) Date Nov. 6, 2023,
PCT Pub. No. WO2022/234232, PCT Pub. Date Nov. 10, 2022.
Claims priority of application No. 2104799 (FR), filed on May 6, 2021.
Prior Publication US 2024/0229727 A1, Jul. 11, 2024
Int. Cl. F02C 9/56 (2006.01); F02C 3/113 (2006.01)
CPC F02C 9/56 (2013.01) [F02C 3/113 (2013.01); F05D 2220/323 (2013.01); F05D 2220/76 (2013.01); F05D 2270/05 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for controlling a turbomachine equipped with a gas generator comprising, respectively, low-pressure and high-pressure, rotation shafts, the turbomachine including at least one electric machine forming a device for injecting/taking-off power onto/from at least one shaft of the rotation shafts, said method including steps included in a control loop and comprising:
determining, for the at least one shaft of the rotation shafts and as a function of a rating setpoint associated with said at least one shaft of the rotation shafts, of a variation dU of a mechanical power command,
determining, for the at least one electric machine and as a function of an injection/take-off setpoint associated with said at least one electric machine, of a variation dPelec of a power injection/take-off command,
determining of a multivariable command including a fuel flow rate component as well as a power injection/take-off component for each electric machine, said multivariable command being determined to:
optimize a constraint of tracking of said variations dU and dPelec,
observe operating limits of the turbomachine.