Liquid hydrogen high-temperature superconducting motor full-electric propulsion system

Abstract

The invention discloses a liquid hydrogen high-temperature superconducting motor full-electric propulsion system, and relates to the technical field of ships. According to the system, a liquid hydrogen storage and conveying module stores liquid hydrogen and conveys the liquid hydrogen to a power propulsion module, a hydrogen-air fuel cell power generation module and a superconducting cable power transmission and transformation module for cooling so as to ensure the working performance of each module; and the liquid hydrogen cools all the modules and then enters a heat exchanger for heat exchange to form normal-temperature hydrogen to be conveyed to the hydrogen-air fuel cell power generation module to serve as fuel, and the hydrogen-air fuel cell power generation module generates power through an electrochemical reaction of hydrogen and air and supplies power to the power propulsion module through the superconducting cable power transmission and transformation module. According to thesystem, multi-energy-state management is carried out on the whole electric propulsion system, the motor power, the motor efficiency and the energy use efficiency can be greatly improved, the ship bodyspace can be saved, the torque requirements under multiple working conditions can be met, the navigational speed, the endurance and the effective load capacity are increased in a different-emphasis mode, and self-noise and radiation noise are reduced.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a liquid hydrogen high-temperature superconducting motor all-electric propulsion system. Background technique [0002] At present, the common power propulsion systems mainly include high-energy lithium-electric power propulsion system, fuel-powered power propulsion system and nuclear power power propulsion system. These power propulsion systems have their own characteristics: [0003] The high-energy lithium-electric propulsion system is currently a relatively mature power propulsion system, and it needs to be further improved in terms of endurance, safety, charging speed, service life, and integrated power management technology. Therefore, it is currently mainly used in small marine vehicles and low-speed submersibles. And small civilian ships, usually not used on naval warfare platforms. [0004] Although the nuclear power propulsion system has extremely high energy density, due...

AI Technical Summary

Problems solved by technology

[0004] Although the nuclear power propulsion system has extremely high energy density, due to its extremely high technical difficulty, very complex structural system, high potential safety risk level, high development cost and one-time maintenance cost, the current application area is still relatively narrow , and are generally less likely to be applied to naval warfare platforms

[0005] At present, the vast majority of naval warfare platforms use fuel-powered propulsion systems. Although this system has a high technical maturity, there are still the following insurmountable problems: (1) The technical path of the system is basically solidified, and the main performance indicators of the system have limited room for improvement; 2) The specific power of the main engine is relatively low, there are many transmission devices and complex structures, the weight and space occupied are large, and the overall fitability is limited. For some platforms with extremely high structural requirements, the effective load is indirectly reduced; (3 ) uses diesel as the main fuel, with limited energy density, energy utilization efficiency close to the limit, relatively low self-sustaining force, limited payload expansion capability, and low cost-efficiency ratio; (4) High noise of the main engine, large vibration of the transmission device, and high vibration radiation noise , The vibration and noise reduction measures of the system are complicated and the effect is not obvious; (5) The thermal radiation of the motor is high, the cooling efficiency is low, and the infrared stealth is poor

Images