On July 20, 2021, China’s 600 km/h high-speed maglev transportation system developed by CRRC and with completely independent intellectual property rights was successfully rolled off the assembly line in Qingdao. This is the world’s first high-speed maglev transportation system designed to reach 600 km/h. It marks that China has mastered the complete set of high-speed maglev technology and engineering capabilities.

Its successful development is of great and far-reaching significance for building a new engine for China's high-end equipment industry, forming a new advantage for rail transit, seizing the commanding heights of technological competition, accelerating the construction of a modern comprehensive three-dimensional transportation network, and supporting the strategy of a "powerful country in science and technology" and "powerful transportation country". .

Sun Yongcai, Secretary of the Party Committee, Chairman and General Manager (President) of CRRC, pointed out in the offline ceremony that in 2016, CRRC was designated by the Ministry of Science and Technology as a pilot unit for the implementation of the national science and technology system reform, and undertook the national “Thirteenth Five-Year Plan”. "7 of the 10 key special tasks for advanced rail transit. "R&D of key technologies for high-speed maglev transportation systems" is the top priority of the key special tasks. As the undertaking unit of the project, Sifang Co., Ltd., a subsidiary of CRRC, has established a collaborative innovation team that combines production, education, research and application with the enterprise as the main body. After five years of joint research, it has successfully overcome the key technology of 600 kilometers per hour high-speed maglev. Today, the successful roll-off of the high-speed maglev transportation system indicates that the project has achieved major phased results and that my country’s independent and innovative high-speed maglev system has formed an industrialization capability.

Sun Yongcai said that, facing the future, standing at the important moment of striding forward to the second centenary goal of building a socialist modern power in an all-round way, CRRC will thoroughly study and implement the spirit of General Secretary Xi Jinping’s important speech on July 1, and always keep in mind the general secretary’s entrustment. , Based on the new development stage, fully, accurately and fully implement the new development concept, integrate into the new development pattern, adhere to the national strategy as the guide, user demand as the guide, technological innovation as the support, with the highest standards, strictest requirements, The most powerful measure accelerates the promotion of major technological and equipment research projects, accelerates the realization of scientific and technological self-reliance, strives to create "origin technology sources" and "modern industrial chain length", and strives to build a respected world-class enterprise, which is a powerful country in science and technology and a strong transportation country , Create a powerful country, and make new and greater contributions to the realization of the great rejuvenation of the Chinese nation!

R & D history

In order to master the key technology of high-speed maglev, under the support of the "13th Five-Year" National Key Research and Development Program of the Ministry of Science and Technology, the Advanced Rail Transit Key Special Project, organized by CRRC, led by CRRC Sifang Co., Ltd., CRRC Research Institute, CRRC Sifang Institute , CRRC Zhuzhou Institute and CRRC Zhuzhou Electric participated in the development of a 600 km/h high-speed maglev transportation system by bringing together more than 30 domestic universities, research institutes and enterprises in the field of maglev and high-speed rail.

The project was launched in October 2016, a test prototype was developed in 2019, and it was successfully tested on the test line of Tongji University in Shanghai in June 2020. After system optimization, the final technical plan was determined, and a complete system was developed in January 2021. And started a six-month joint debugging and joint test. So far, after 5 years of research, the 600 kilometers per hour high-speed maglev transportation system was officially rolled off the assembly line, successfully overcoming various technical difficulties.

Project breakthrough

Independently developed China's first 5 sets of 600 kilometers per hour high-speed maglev engineered trains. A new head type and aerodynamic solution were developed to solve the aerodynamic problems under ultra-high speed conditions. Using advanced laser hybrid welding and carbon fiber technology, a lightweight and high-strength car body that meets the requirements of ultra-high-speed air-tight load-bearing has been developed. Independently developed suspension guidance and speed measurement positioning devices, and the control accuracy has reached the international leading level. Break through the key manufacturing process and master the manufacturing technology of key core components such as suspension frame, electromagnet and controller.

Completed the independent research and development of the high-speed maglev traction power supply system. Mastering the key technologies of vehicle-to-ground communication under high-speed conditions, such as ultra-low delay transmission and partition handover control, innovated and established a high-speed maglev transportation control system suitable for automatic tracking and operation of long-distance trunk lines. A new high-precision track beam that satisfies the high-speed and smooth running of trains has been developed.

At present, the 600 kilometers per hour high-speed maglev transportation system has completed the integration and system joint adjustment, and the five marshalling trains have realized a whole stable suspension and dynamic operation on the in-plant commissioning line, with good functional performance.

Technical advantages

The high-speed maglev off the assembly line adopts mature and reliable normal conduction technology. The basic principle is to use electromagnetic attraction to make the train levitate on the track to realize non-contact operation. It has the technical advantages of high efficiency, fast speed, safety and reliability, strong transportation capacity, flexible marshalling, comfortable on time, convenient maintenance, and green environmental protection.

The high-speed maglev with a speed of 600 kilometers per hour is the fastest ground vehicle currently achievable. Calculated according to the actual travel time "door-to-door", it is the fastest mode of transportation within a distance of 1,500 kilometers.

It adopts the operating structure of "car-holding rail", which is safe and reliable. The traction power supply system is arranged on the ground, and the power is supplied in sections according to the position of the train. Only one train runs in the adjacent section, and there is basically no risk of rear-end collision. Realize GOA3 level automatic operation control, and the system safety protection meets the highest safety level requirement of SIL4.

The space is spacious and the ride is comfortable. A single section can carry more than one hundred passengers, and can be flexibly grouped in the range of 2 to 10 vehicles to meet the needs of different passenger capacity.

No contact with the track during driving, no wheel or rail wear, less maintenance, long overhaul period, and good economy throughout the life cycle.

Significant

As a high-speed transportation mode, high-speed maglev can become one of the effective ways of high-speed and high-quality travel, enriching China's comprehensive three-dimensional transportation network. Its application scenarios are diverse, and it can be used for high-speed commuter traffic in urban agglomerations, integrated traffic between core cities, and corridor traffic with long-distance and efficient connections.

Focusing on engineering and industrialization, CRRC Sifang has built a professional high-speed maglev integrated experimental center and trial production center in the National High-speed Train Technology Innovation Center. The whole-system simulation and test platform inside has built a localized industrial chain from core components, key systems to system integration.

As an international cutting-edge technology, high-speed maglev is a major "commanding height" in the world's rail transit field and a strategic high ground for global transportation technology competition.

After nearly 20 years of continuous research and technology accumulation, China has basically realized the independent research and development capabilities of the entire system of high-speed maglev transportation, formed a complete set of engineering technologies, and realized independent and controllable industrial supporting capabilities. China's high-speed maglev has entered the R&D stage. The high-speed test stage will gradually transition to the stage of demonstration operation and industrialization development. The successful roll-off of the high-speed maglev transportation system with a speed of 600 kilometers per hour indicates that the conditions for advancing the line test and engineering demonstration have been established.

He Huawu, vice president of the Chinese Academy of Engineering, said that through the construction of high-speed test lines, comprehensive high-speed maglev tests and the accumulation of demonstration operation technologies, it can lay a solid foundation for the continuous innovation and industrialization of China's high-speed maglev.

The 600 kilometers per hour high-speed maglev fills the speed gap between aviation and wheel-rail high-speed rail, and can help form a multi-dimensional, efficient, flexible and convenient multi-dimensional traffic structure with complete, efficient, flexible and convenient speed gradients for aviation, high-speed rail, high-speed maglev, and urban traffic, and enrich China's transportation speed Pedigree, improve the independent innovation capability of rail transit science and technology, maintain the advanced advantages in China's high-speed transportation field, promote the upgrading of high-end equipment and strategic emerging industries, and help to seize the commanding heights of technological competition and future development, help achieve high-level technological self-reliance, and accelerate the construction of a strong transportation country. A strong country with science and technology is of great significance. Editor/He Yuting