公开(公告)号：US20210340956A1

公开(公告)日：2021-11-04

申请号：US17376965

申请日：2021-07-15

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Chaohong Cai ,  Timothy J. Crowley ,  David Lei Ma ,  Richard P. Meisner

IPC: F03D7/04 ,  F03D7/02

Abstract: A control system for limiting power turbine torque (QPT) of a gas turbine engine includes a controller including a processor and memory configured to control the gas turbine engine, the controller including an engine control module that provides an effector command signal to a gas generator of the gas turbine engine; a power turbine governor module that outputs a preliminary torque request (QPT_req_pre); and a power turbine torque (QPT) optimal limiter module that outputs a maximum torque topper (QPT_max) to limit a power turbine speed overshoot of the gas turbine engine; wherein the controller outputs a minimum value between the preliminary torque request (QPT_req_pre) and the maximum torque topper (QPT_max) to the engine control module.

公开(公告)号：US11976633B2

公开(公告)日：2024-05-07

申请号：US17376965

申请日：2021-07-15

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Chaohong Cai ,  Timothy J Crowley ,  David Lei Ma ,  Richard P Meisner

IPC: F03D7/04 ,  F03D7/02

CPC classification number: F03D7/043 ,  F03D7/0224 ,  F03D7/0272 ,  F03D7/0276 ,  F05B2270/327 ,  F05D2220/329

Abstract: A control system for limiting power turbine torque (QPT) of a gas turbine engine includes a controller including a processor and memory configured to control the gas turbine engine, the controller including an engine control module that provides an effector command signal to a gas generator of the gas turbine engine; a power turbine governor module that outputs a preliminary torque request (QPT_req_pre); and a power turbine torque (QPT) optimal limiter module that outputs a maximum torque topper (QPT_max) to limit a power turbine speed overshoot of the gas turbine engine; wherein the controller outputs a minimum value between the preliminary torque request (QPT_req_pre) and the maximum torque topper (QPT_max) to the engine control module.