High temperature superconducting motor to drive and control

Device did not have any special requirements. High temperature superconducting motor can use existing synchronous converter, frequency converter or PWM converter, although in order to obtain the advantage of low distortion, possible for these systems do some simplified.
2.4 economy
Reduce energy costs
High temperature superconducting motor can higher efficiency mode and low power factor mode operation (leading power factor and lagging power factor). Compared with conventional motor, a 100 mva of high temperature superconducting motor for efficiency factor, save cost could be as high as
Nearly dollars, therefore, high temperature superconducting motor operation cost relative than conventional motor is low, which in its life cycle save the energy cost.
Reduce the manufacture and installation cost
Due to the high temperature superconducting motor power density is big, can do very compact (only for conventional motor 1/3), therefore, reduce the cost of installation of the construction cost. As in the ship application, can shorten shipbuilding cycle, save fabrication cost. Likewise, small size and reduce the transportation cost.
Reduce the maintenance repair cost
High temperature superconducting motor using new rotor and output shaft design, manufacturing concept, in its operation, almost do not need to
rotary union undertake the daily maintenance.
"Queen Elizabeth ii, a luxury cruise liner is a typical example. The ship electric propulsion systems use two table 44 mw conventional motor, motor weight more than 400 tons/table. Her sister ship "queen Mary 2" in 2004 completed her maiden voyage, "queen Mary 2" propulsion power for 84 mw. If such a cruise use is now building 36.5 MW motor as propulsion motor of words, 2 sets of motor power just to satisfy her power requirements, and weight is only 1/5 of the conventional motor. Only propulsion motor a, the high temperature superconducting motor will give ship operators much economic benefits!
The United States navy estimates, the use of high temperature superconducting propulsion motor, the United States navy DDG - 51 type electric ship in normal operation condition every ship can save 450 000 dollars in operation.
Three superconducting motor and conventional motor technology comparison
To
fiber optic rotary joint compare the superconductor company 5 mw high temperature superconducting motor and other equivalent power of large motor can be found high temperature superconducting motor system is more efficient than conventional synchronous motor and advanced induction motor. Especially in low power output, its efficiency is still high, almost no changes (figure 4). High temperature superconducting motor this kind of character, just meet the ship propulsion system operating condition of demand.
Figure 4 different types of Marine propulsion motor power and efficiency curve
Figure 5 reflects the high temperature superconducting motor and the conventional motor weight/power relations comparison. Figure 6 reflects the high temperature superconducting motor and the conventional motor volume/power relations comparison, in this comparison, it also contains the quantity of maintenance. Based on the equipment itself the exterior of size and its working state, the high temperature superconducting motor simply extend 1 meter, and conventional motor must be extend 2 meters.
Figure 5 high temperature superconducting motor and conventional motor weight/power relations comparison
Propulsion motor volume and weight for ship design and construction has the important influence. If a new motor with conventional motor of the same power, and the weight or volume is only one half of that for the latter or a third, and JunChuan speaking, it means that the faster speed, more long endurance and more powerful firepower, and reliable life support. For the amount concerned, it means more effective tank capacity and greater economic benefit.