INFLUENCE OF DISTURBANCES ON TRANSIENTS OF A GAS TURBINE SHIP PROPULSION SYSTEM - PRELIMINARY INVESTIGATIONS

摘要

A gas turbine ship propulsion control system transients have been investigated. On the basis of a mathematical model composed of blocks modelling a two-shaft gas turbine, a gear (mechanical or electric), and a coupling shaft, some preliminary simulations have been carried out. Ship propeller shaft angular velocity, fuel flow rate, and gas turbine combustion chamber outlet temperature response to the ship propeller shaft angular velocity set point, and fuel flow rate, changes have been analyzed. Influences of limiters in the controller action on analyzed transients have been compared.