Robust L2 control design for speed regulation system of Marine Diesel Engine Generator

Compared to the land power systems, the loads of the ship power systems have a sererious influence on the stability of the systems. Furthermore, the dynamic/static loads and generators have high nonlinear and coupling interactions. In order to attenuate the impact on the frequency of Marine Diesel Engine Generator, speed regulating control problem of marine power system under diffident working conditions is studied based on nonlinear L₂ disturbance attenuation control. Firstly,the nonlinear relationships among the generators and the dynamic/static loads are deeply analysized based on mathematical models. Then the speed regulation controller is designed by using Backstepping techniques and L₂ disturbances attenuation methods, which seriously reduces the impact of disturbances. Lastly, simulations show that the designed controller is effective to reject the unknown external disturbances.