Robust Controller Research For Marine Electrical Propulsion Integrated System

Shipping industry is constantly developing and progressing,ship propulsion method is constantly changing and updating,electric propulsion the new way of propulsion is being continuously popularized and perfected in ships,the research of ship electric propulsion system is also carried out in major institutions and universities.To ensure each part of the ship electric propulsion operate stably and improve the dynamic performance parameters in the process of operation,different kinds of intelligent controller is also gradually developed in system,the overall research on modeling and simulation of electric propulsion system with intelligent controller is extensive,and carrying out the transient stability analysis of the generator unit in electric propulsion integrated system to ensure that the various dynamic performance index of the operation in the process meet the requirements.This paper is divided into two parts,major part is generator unit that is the power system,second part is the electric propulsion system that is the frequency regulation of asynchronous motor,the main part of this paper is the design of robust controller for electric propulsion system,moment of resistance portion using asynchronous motor propulsion module as the dynamic load.The generator unit adopts the mathematical model as the preparation of MATLAB /M file that is used for simulation analysis of the robust controller design dynamic index,moment of resistance portion adopts MATLAB/ SIMULINK to build model,speed control system?voltage control system? integrated control system?and parallel generator unit system are established as simulation model,frequency regulation of asynchronous motor portion set up four module contain coordinate transformation,current hysteresis PWM,PID speed regulator,direct current power supply for asynchronous motor,the two part connected through the S function will be placed in the SIMULINK for simulation analysis,the first step is the dynamic parameter simulation of nonlinear robust controller for speed control system.the next step is the dynamic parameter simulation of linear robust controller for voltage control system,and then is the dynamic parameter simulation of nonlinear robust controller of voltage and speed integrated control system,finally carries on parallel operation of generator unit to observe the dynamic performance index whether meet the requirements.moment of resistance portion of he generator unit adopts the frequency regulation of asynchronous motor module as the load to replace the traditional static load simulation,so that the controller design of the generator unit is more suitable for the actual operating conditions of the ships.