Research On Ship’s Integrated Electric Propulsion System With Pulse Load

The ship’s integrated power system is a ship’s power system that integrates power generation,daily power consumption,propulsion power supply,and high-energy weapon launch power supply.As the development of high-energy weapons such as electromagnetic railguns and laser cannons has matured,these devices have also been used in ship electric propulsion systems.Because the high-power pulse load of the electromagnetic railgun will have a great impact on the entire system,it is necessary to analyze its physical structure,and verify its impact on the stability of the ship system through modeling and simulation.Apply to real ships to provide theoretical support.Based on the ship’s integrated electric propulsion system with impulse loads,a diesel generator model,a gas turbine generator model,and a simulation model of the propulsion system are constructed,and the diesel and gas turbine power generation systems are simulated.The simulation results are follow-up Research laid the foundation.In view of the large requirements for the adjustment time of the rectifier generator after the high-power pulse load is added,the excitation controller of the generator system is changed from dual closed-loop PI control to active disturbance rejection control.Regard the input-independent quantities in the system as internal disturbances,and then combine the external disturbances to form a total disturbance,and build a new extended state observer based on the total disturbance.Adjust the voltage and power of the generator sets so that the two rectifier generator sets can be distributed according to the set capacity ratio.Based on the pulse load device,a simulation model of the electromagnetic railgun device and the energy storage system with super capacitors is constructed to make the ship’s integrated power system more complete.It is verified through simulation that the electromagnetic railgun and the energy storage system with super capacitor affect the stability of the entire system.Build a ship energy management system based on the ship’s integrated electric propulsion system.By studying the energy management strategy of the ship’s power system,design energy management strategies under different operation modes,so that the energy in the system can be distributed,the energy consumption of the generator system is reduced,and the long-term stable operation of the ship is promoted.