Three-Spool Marine Gas Turbine Multi-Objective Switching Control System Design and Optimization

Three-spool marine gas turbine engine multi-objective regulating and protecting problem is discussed in this paper. Multi-loop switching control system is introduced and compared with traditional control method. Nonlinear component-level model is developed to predict system dynamic, based on which an equilibrium manifold expansion model is constructed to carry out control system designing and parameter tuning. A family of PI controllers is designed for regulating loop and protecting loops. PSO algorithm is introduced to tune the parameters. Simulation reveals that switching control method is better in dynamic performance and can still guarantee safety. This is proved to be an improvement brought by the multi-loop structure and appropriate optimization algorithm.