Energy management and control method for electric propulsion system of hybrid power ship

The invention provides an energy management and control method for an electric propulsion system of a hybrid power ship and aims to realize the ultimate goals of minimizing energy consumption, emission, maximizing cruising power and guaranteeing the performance of the ship power system. The electric propulsion system of the hybrid power ship comprises an energy source system, an electric propulsion device, a charging device, a direct current bus, an energy conversion device and an energy management system. The energy management and control method can control the supply and conversion of the ship hybrid power source under two working modes. The energy management and control method comprises the steps that (1) the current demanded power of the ship is obtained; (2) the SOC (state of charge) value of a lithium battery is obtained through a CAN (controller area network) bus; and (3) an energy control rule is provided. The energy management and control method for the electric propulsion system of the hybrid power ship has the advantages that multiple energy sources in the electric propulsion system of the hybrid power ship are reasonably distributed, the utilization efficiency of the energy is improved, excessive energy can be recovered, the minimum energy consumption, minimum emission and the maximum cruising capacity can be realized, and the performance goal of the ship power system is guaranteed.