Research on Control Strategy of Marine Diesel Engine in a Hamiltonian Framework

The excitation and speed control of marine diesel engine plays an important role in the stability of marine power station system. In order to verify the feasibility of a new type of controller used in the marine power station system, it is necessary to understand the working characteristics of the diesel generator set in the condition of switching and grid connection power generation. The paper firstly researched and established the nonlinear mathematical model of ship power system, and then based on the Hamilton energy theory, designed the nonlinear excitation controller of diesel speed coordination unit, finally achieved the ship power station simulation system related to passivity based controller based on Simulink simulation platform. The simulation results show that the passivity based controller can keep the stability of the system in the process of no-load start-up, load sudden change and grid connection power generation and it has a certain value in engineering applications.