A coordinated control problem of ship power system with superconducting magnetic energy storage(SMES)
is addressed based on Hamilton function method. Firstly, nonlinear modeling of marine diesel engine generator, SMES modeling and truster load modeling are analyzed sufficiently, and coupling relations among them are formulated. Then Hamilton realization of the modeling of the generator is obtained by using a pre-feedback technique. As such, the controllers with SMES are designed to perform speed adjustment and excitation adjustment via Hamilton dissipation theory. The designed controllers have simple structure and tangible physical meanings. Finally, simulation results show that the proposed control can effectively improve the transient performance of the power systems.