Li Kaiyuan said to Yang Jie: "By the way, this time the navy is going to launch a large amphibious assault ship, do you Honghu Shipbuilding Group have confidence in this design plan?"

Yang Jie smiled: "We are still very confident, but even if the navy does not adopt our design scheme, our Honghu Shipbuilding Group Company can still undertake the construction of this large amphibious assault ship, and in the future, we will also launch a large amphibious assault ship design scheme using a higher power high-temperature superconducting motor drive system, I believe the navy will like it very much." ”

Li Kaiyuan glanced at Yang Jie: "What, you have made a breakthrough in high-temperature superconducting motors now?"

Yang Jie smiled: "Yes, now we have developed a set of superconducting motors with a power of 40 megawatts, which are now being tested, and should be tested on the ship in a few years, and it is also the world's largest marine motor at this stage." ”

Li Kaiyuan said happily: "You kid has made something amazing quietly!"

"This was also forced out. ”

Yang Jie said: "Before, when we built the large-scale scientific experiment facility of Shenguang Light Source in the imperial city, we needed to use a lot of superconducting materials, and at that time I found that there were only 3 second-generation high-temperature superconducting material suppliers in the world, 2 of which were in Eagle Sauce China, which were very expensive, and the other was in Neon Country, and they were prohibited from exporting. We only have a laboratory production line in this high-temperature superconducting material in China, and there is no commercial production line, so we Huaxing Technology Group is also a high-temperature superconductivity research institute jointly established with the Chinese Academy of Sciences, as the secondary college of the Chinese Academy of Sciences, the infrastructure and daily operation of the college are funded by us, and the work of the research personnel of the institute is closely related to the industrialization goal of our enterprise, and its assessment and promotion system is also based on industrialization, rather than papers, and the intellectual property rights generated in the research institute belong to the enterprise. ”

"In addition, we have also dispatched a group of electrical, mechanical, simulation and other professional engineers to independently develop the main equipment on the superconducting production line, and now this research institute has more than 70 technicians, half of them are making equipment, the other half is using equipment, and the equipment is used by material engineers, who have any needs in the material process, they will communicate with equipment engineers to let the latter improve the design. Now the two teams supply and demand docking, close cooperation, from the process to equipment to improve hundreds of technical points, now the preparation of ultra-high temperature materials in the yield has been greatly improved, the price is only one-third of our original import price. ”

Yang Jie was still very satisfied with this, and said with a smile: "Now this high-temperature superconductivity research institute is not only a supplier of high-temperature superconducting strips, but also a manufacturer of complete production lines of superconducting strips, and it is also the only one among the world's high-temperature superconducting material manufacturers. ”

Li Kaiyuan nodded: "How big do you think the market for this high-temperature superconducting material can be?"

Yang Jie said: "It's really hard to say, the main thing is the cost of high-temperature superconducting materials, the cost of these materials can account for 30 to 40 percent of the cost of equipment, if the materials can be reduced, the speed of this market outbreak is still very fast." ”

"Now our use of high-temperature superconducting materials is mainly used in large-scale scientific experimental devices and high-power superconducting motors, the other is that the high-temperature superconducting filter we have developed now is now used in communication base stations and satellite communications, and we are now also used in high-power pulse power supply technology and other power equipment. ”

Yang Jie said: "Now our high-temperature superconductivity technology is mainly used in large-scale equipment, and in the future, these equipment will still face enterprise-level customers, and will not directly face consumers for the time being." ”

Li Kaiyuan nodded and said: "You have been concentrating on the research and development of permanent magnet materials before, and now you have begun to enter high-temperature superconducting materials, and the speed is still very fast!"

Yang Jie said with a smile: "There is still a technical bottleneck in permanent magnet materials, we have always wanted to develop higher power generators and motors, because the magnetic field of permanent magnet materials is limited, so we have encountered a technical bottleneck, so we have to start to transfer to the technical route of high-temperature superconducting materials." ”

"High-temperature superconducting materials have zero resistance characteristics in low-temperature environments, and their current-carrying capacity is far better than that of ordinary copper wires, and the motor using superconducting materials has great advantages in the ultimate capacity and volume of a single machine compared with conventional motors, and the volume and weight of large-capacity high-temperature superconducting motors are only a fraction of the conventional electrical contacts, which is what we need very much. ”

In fact, Ruisheng Technology Company, a subsidiary of Huaxing Technology Group Company, was the first to hit the technical limit in the development of ultra-high-power motors, because after developing a permanent magnet motor that exceeded the megawatt level, it was found that after reaching two megawatts, it was impossible to control the volume of a 3 megawatt or even 5 megawatt motor.

After more than a year of no progress on this, the technical research and development team began to switch to the development of high-temperature superconducting motors, and soon came up with a 5-megawatt prototype.

At first, these high-temperature superconducting materials still needed to be imported, but now they all use their own domestic materials.

Because high-temperature superconducting motors have the characteristics of light weight, small size, high efficiency, low noise and easy maintenance, these technical products have also been smoothly introduced into the field of power equipment such as ship electric power systems and wind power generation.

In particular, Honghu Shipbuilding Group has developed tens of thousands of tons of displacement, and needs a motor with ultra-high power power system, and now Honghu Shipbuilding Group has also developed a superconducting motor with a power of 40 megawatts and a superconducting motor with a high temperature for various tests.

This ultra-large high-power motor is prepared for aircraft carriers or other ships with a displacement of 80,000 tons or even 100,000 tons.

High-temperature superconducting motor is a multidisciplinary interdisciplinary technology that applies new materials, new methods and new processes, and Huaxing Technology Group Co., Ltd. has also gathered a large number of professional R&D teams in low temperature, materials, electromagnetics, machinery, monitoring, control and other professional research and development teams in the physical parameters of high-temperature superconducting wires, 3D multi-physics coupling optimization design of high-temperature superconducting magnets, torque tube research on radial connection of metal flanges of composite cylinders, vacuum and heat pipe technology, A large number of research and prototype trial production have been carried out on the wireless detection technology of rotor parameters, and breakthroughs have been made in key technologies such as high field strength and high temperature superconducting magnet technology, magnet support and heat insulation technology, low temperature system optimization and integration technology, air gap armature technology, detection and protection, etc., and the design and manufacturing experience has been accumulated, which has greatly improved the design and development capabilities of high-temperature superconducting motors.

The completion of the prototype of the 40 MW ultra-high power high-temperature superconducting motor also means that Huaxing Technology Group has been at the forefront of the world in the technology of high-temperature superconducting motors.