The reporter learned from CRRC Zhuzhou Electric Locomotive Co., Ltd. on March 10 that the first commercial maglev version 3.0 train developed by the company and with complete independent intellectual property rights in my country has completed relevant dynamic tests and systems on the high-speed maglev test line of Tongji University. Joint debugging. This indicates that my country has mastered the key core technology of medium-speed maglev, and the innovation of maglev technology and industrial development will continue to be at the forefront of the world.
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From the commercial maglev version 1.0 train with a speed of 100 kilometers per hour to the commercial maglev version 3.0 train with a design speed of 200 kilometers per hour, China’s independent maglev technology has undergone several iterations over the past ten years. What are the technical highlights of the 3.0 maglev train? What are the application scenarios of each generation of maglev trains? The reporter walked into the Maglev Research Institute of CRRC ZELC to find out.
With red as the main color and painted with golden “Chinese Dragon”, the shape of the commercial maglev version 3.0 train is very simple and elegant. The reporter walked into the compartment, the width of 3.7 meters can accommodate a row of six seats, and the passenger capacity has been greatly improved compared with the previous generation of maglev trains. Technically, the commercial maglev version 3.0 train has many bright spots.
Highlight 1: “Land flight” is faster
Compared with the commercial maglev version 1.0 train, the design speed of the 3.0 version train has doubled, and behind the speed increase is the further lightening of the train.
The traction motor is called the “heart” of the train, but the “heart” of the commercial maglev version 3.0 train is transferred from the bottom of the vehicle to the ground, breaking through the limitations of traditional rail transit traction equipment installed on the train. According to Zhang Wenyue, deputy director of the Maglev Research Institute of CRRC ZELC, after the train is lightweight, the acceleration, deceleration and average travel speed can be greatly expanded. Compared with the commercial maglev version 2.0 train, its traction efficiency is increased by 20%, the climbing ability is increased by 30%, and the acceleration time is shortened by more than 50%.
Highlight 2: Unmanned driving is more intelligent
Walking into the train cab, Zhang Wenyue introduced the control systems behind various instrument panels. “The ‘ears and eyes’ of commercial maglev 3.0 trains are 5G high-frequency millimeter-wave wireless communication technology, with good anti-interference and fast transmission efficiency.” Zhang Wenyue said that the train is controlled by the ground operation control system, online status monitoring, big data Analysis and other technologies can realize self-prediction and self-diagnosis of multi-system faults such as vehicles, rails, power supply, and operation control, so as to ensure the safety and reliability of fully automatic driving.
Highlight 3: Noise reduction and wind resistance are more comfortable
Different from the contact-type current receiving used by the previous version 1.0 and 2.0 trains, the commercial maglev version 3.0 train adopts the induction power supply of the on-board linear motor, which can transmit the inductive power supply wirelessly at low speed and stationary, completely eliminating the current receiving resistance and current receiving noise, realizing the Completely non-contact flow, improving ride comfort.
On the basis of the rail-holding operation technology, the commercial maglev version 3.0 train is equipped with an active steering control system with adaptive function. Compared with the version 2.0 train, its curve passing speed is increased by more than 15%, and the crosswind resistance is improved by at least 2 At this level, the train is more adaptable and safer to operate in harsh environments.
The maglev transportation system has the advantages of low noise, low vibration, strong climbing ability and small turning radius. At present, maglev trains have been put into operation in some cities in my country.
On the Changsha Maglev Express Line in Hunan Province, the commercial maglev version 1.0 train has been operating safely for more than five years, carrying over 15 million passengers.
In Fenghuang County, Hunan Province, the maglev sightseeing express line equipped with commercial maglev version 1.0 trains has begun trial operation. The line connects Zhang (Jiajie) Ji (shou) and Huai (hua) high-speed rail, and is the first maglev cultural tourism project in my country.
What is the application prospect of commercial maglev version 3.0 trains? Yang Ying, chief scientist of CRRC, told reporters that the train transportation technology has now reached the stage of engineering and commercialization.
“Currently, my country is accelerating the construction of urban metropolitan areas and urban railways. Commercial maglev 3.0 trains can provide another option for inter-city and inter-city transportation.” Yang Ying said, “In the future, air tightness will be improved and aerodynamic shapes will be further optimized. , increase ground traction power and other technical upgrades, commercial maglev 3.0 trains can also meet the needs of high-speed operation.”
Zhou Qinghe, Secretary of the Party Committee and Chairman of CRRC Zhuzhou Electric Locomotive Co., Ltd., said that at present, my country has mastered the system integration technology and key core technologies of commercial maglev trains, has developed platforms for different types of maglev trains, and cultivated the entire industry chain of maglev transportation systems. , Maglev technology level and industrial development to maintain the forefront of the world.