High temperature superconducting motor has light weight

High temperature superconducting motor has light weight, small volume such advantages, very beneficial for ship pod propulsion applications. If a ship of 500 tons of lightweight container ship can load more than 40 containers, if using a high temperature superconducting pod propeller, then the same size of the container ship can loading 2.5% to rotary joints 4% of the container.
Figure 6 high temperature superconducting motor and conventional motor volume/power relations comparison
4 the future ship power system configuration
In the field of Marine propulsion, high temperature superconducting motor have light weight, small size, more power density and high efficiency of load characteristics, the merchant and JunChuan it is very important, meet these ship operation condition characteristics.
In addition, the high temperature superconducting motor excitation winding inner design flexible direct benefit to
rotary union ship propulsion system configuration, ship mission and all aspects of operation. Specifically, the high temperature superconducting motor may be installed in either a hold, also can be used as a pod propulsion system configuration.
According to
fiber optic rotary joint the American superconductor company plan, the future of ship electrical power systems, and electric propulsion system is not only a full power system, but also a full high temperature superconducting electric propulsion system. The whole electric power system is composed of high temperature superconducting generator power supply module, universal high temperature superconducting industrial motor user module and high temperature superconducting motor propulsion system module (figure 7).
Figure 7 full high temperature superconducting power ship power system topology
High temperature superconducting generators and high temperature superconducting motor has similar characteristics, all kinds of loss minimum, including cooling system of power loss, the whole system loss only half of the conventional generator. This makes superconducting generator efficiency increased 0.5% ~ 0.8% (superconducting generator efficiency as high as 99%). Superconducting generators synchronous reactance also small, good stability. Due to tell the core, reduced the armature winding on insulation request, therefore can adopt armature winding, save step-up transformer, can be directly into existing power grid operation. Authorities think, HTS synchronous generator is the main power plant in the future. The 5000 HP high temperature superconducting industrial motor and 5 mw high temperature superconducting Marine propulsion motor later, American superconductor company are design and development HTS synchronous generator, is for the purpose of full electric ship get application.
In the ship, high temperature superconducting motor and generator can and existing JunChuan high voltage, low current system compatible structure. Motor control can use existing synchronous/cycle, or PWM converter technology, and need not to carry on the new research and development work. The whole power system is also very quiet.
High temperature superconducting generator can be used as the ship power grid nondestructive efficiency sharpening unit to use. In the large surface ship, may be equipped with all kinds of electromagnetic weapons (electromagnetic ejection, electromagnetic gun, etc.) equipment, high temperature superconducting generators will play an extremely important role.