Power turbine speed control system

摘要

A power turbine speed control system (2) for a turbo-shaft type gas turbine engine (4) that has a gas generator compressor spool (6) and a power turbine spool (8) and drives an electrical generator (20) that powers at least one electrical load (24) by way of at least one electrical bus (22), comprises a power turbine controller (26) that senses the rotary speed of the power turbine spool (8) and generates at least one signal that changes the torque of the electrical generator (20) in response to the sensed change in the rotary speed of the power turbine spool (8).