Research On Modeling And Simulation Of Ship Power System

With the continuous development of modern ships and the continuous advancement of related technologies,the ship's integrated power system has become a trend of development in the future.The capacity of modern ship power systems is getting larger and larger,and its structure has become more and more complicated,and more power is used.The electric equipment is applied to the ship,and the high-power propulsion motor becomes the main load of the ship power station.The operating conditions of the ship often change,and the load disturbance of the ship's power system is frequent.The ship's power system is required to have good anti-interference ability,and the stability must be ensured when it is interfered.Therefore,it is necessary to carry out simulation research on the ship's power system.In this paper,CMAC-PID control and fuzzy PID control are studied.After comparison,fuzzy PID control is selected to be applied to the control of ship power system.The ship power system model is established in MATLAB by mechanism modeling method.The actual control effect of the PID.In this paper,according to modular modeling,the whole ship power system is divided into steam turbine speed control system,synchronous generator and its excitation system,and load part.The basic models are established for these parts respectively,and then CMAC-PID and fuzzy PID control are adopted respectively.The load disturbance simulation and steam pressure disturbance simulation of the speed control system,the sudden increase and sudden load simulation of the excitation system show that the fuzzy PID control is better for the speed control system and the voltage regulation system than the CMAC-PID control and PID control.Control effect.Based on the above-mentioned module models,a complete ship power system simulation model is established.Firstly,the response of the generator set during sudden load and unloading load is analyzed,and the feasibility of the constructed fuzzy PID control for the ship power system is verified.The short-circuit fault simulation of the ship power system is carried out in MATLAB.According to the simulation results,the model established in this paper can reflect the actual response process of the ship power system.