Optimal control method for electric propulsion systems of green ships based on HILS test

摘要

In this paper, we propose the optimal servo design method for the speed control of green ships with 200kW electric propulsion systems. The proposed linear quadratic servo controller with integrator reflects not only the steady state error, but the performance index with respect to ship dynamic states and input energy. While the existing linear PI control method doesn't consider the input energy unless the input fuel limitation, the speed tracking and energy minimization are obtained by the proposed method. The performance index with linear quadratic form with states and inputs is determined by solving the inverse problem of algebraic Riccati equation. The effectiveness of the proposed control method is verified by the real time simulation test using the hardware-in the loop simulation for electrical propulsion systems of the green ships.