The high-temperature superconducting electric suspension system developed by China has achieved the first operation, and the speed can reach 600km

The high-temperature superconducting electric suspension system developed by China has achieved the first operation, and the speed can reach 600km

After the introduction of maglev train technology, China began to innovate in a number of maglev technologies, the most important of which is superconductor technology.

When the superconductor technology, which remained at the theoretical level, reached the field of industrial application through the technological revolution, technologies such as maglev trains were born.

After seeing the technology gap, China raised the research and development of superconductor technology to an unprecedented height shortly after introducing the technology of maglev trains.

It is thanks to the breakthrough of high-temperature superconductor technology that China has made great progress in the development of electric magnetic levitation trains, which made it the first time to achieve stable operation in the operating environment of urban subways, so this success was called It is an important step for the maglev train to move towards the urban subway, so what is the difficulty of high-temperature superconducting technology? So much so that it took many years of research and development to get a breakthrough.

1. Technological breakthroughs in high-temperature superconductors

The currently popular electric levitation systems in China are basically based on the basic theory of the mutual cooperation of electromagnetic attraction and electromagnetic repulsion, which is also the cornerstone of maglev train technology. However, superconductor technology is a technology that cannot be bypassed. Just like the manufacture of integrated circuits, lithography machines are necessary. Seeing the importance of this technology, China launched research on it after introducing the technology of maglev trains.

At that time, the mainstream applied superconductor technology was high-temperature superconductor technology. After all, room-temperature superconductors could not break through in a short period of time, so high-temperature superconductors with relatively high critical temperatures became a choice that could be applied to industrial technology. Many high-temperature superconductor materials have become candidate materials for future applications in electric suspension transportation systems.

High-temperature superconductor materials have their own advantages and disadvantages in terms of properties. For example, non-metallic materials such as hydrogen sulfide can reach a critical temperature of 203 Kelvin, but they require too much pressure and are not suitable for industrial applications. This makes copper oxides Materials are now the choice.

The reason why copper oxide materials are favored by industrial applications is largely related to the stability of their superconducting properties. Not only the critical temperature is high, but the required pressure is not large, and it is easy to be used in actual industrial production. In addition, after reaching critical conditions, their superconducting properties remain stable, and large fluctuations in superconducting properties are not easy to occur. Therefore, after selecting the target material, high-temperature superconductors have been developed for decades, and finally for the future. The electric suspension train has developed the required superconducting materials, which is an important step for China to realize the overall development of the electric suspension transportation system.

2. Realized the operation in the subway operating environment

Thanks to technological advances in high-temperature superconducting materials, China has also made leaps and bounds in the development of electric levitation trains, which allowed it to achieve stable operation for the first time in the operating environment of urban subways. In this test, the overall operation of the electric suspension transportation system was stable, and the maximum speed of the train reached 600 kilometers per hour, which can be said to have broken the existing operating record.

In addition to the high-temperature superconductor technology, the technological breakthrough in the power transmission system is also indispensable. This allows the electric suspension series vehicles to maintain stability as a whole, realizes continuous power supply throughout the operation period, and can also stabilize the voltage for power transmission. The relevant technology of the power transmission system can be described as a big test.

The profound background in power transmission technology comes from the technical achievements in the research and development of high-speed rail technology. As the business card of China's transportation technology, it is needless to say that the technology leadership in high-speed rail technology will also benefit the future research and development of electric suspension transportation systems. , it can be seen how important it is for China to amplify existing technological achievements in building a transportation technology chain in the future.

Of course, the construction goal of the electric suspension transportation system is mainly to replace the existing subway construction technology, which is an important upgrade for urban transportation.

Upgrading the city's transportation system can be described as a long-term strategy for China in developing urban competitiveness. After all, it is not enough to rely on some policy changes to enhance the country's attractiveness to foreign investment, without strong technology and hardware as support , I am afraid that it can only end up at a disadvantage for a long time.

Improving the urban transportation system not only demonstrates China's hard power in transportation technology, but also effectively improves the city's attractiveness to investors. From an overall perspective, the electric suspension transportation system has been successful in the test.

It is of great help to China to improve its existing infrastructure, and secondly, to allow China's transportation technology to go global, which is more guaranteed by technological competitiveness, and enables China to further realize the transformation in the manufacturing industry.

It has been decades since the introduction of maglev train technology, and China has already achieved a very obvious effect in digesting and upgrading this foreign technology.

Through the development of the electric levitation transportation system, it opened a precedent for combining the traditional maglev train technology with the subway technology, which brought an innovation to the urban transportation system. Through this innovation, the urban transportation system will be more convenient, and it is self-evident to the overall competitiveness of the city, which can be said to be of profound significance.