China's first maglev train was purchased from Germany, and it started running on the Shanghai maglev line in June 2003. 20 15 10 Changsha maglev line, the first domestic maglev line in China, was successfully put into trial operation.
2065438+On May 6th, 2006, Changsha Maglev Express Line, China's first demonstration line of medium and low speed maglev commercial operation with completely independent intellectual property rights, was put into trial operation.
This line is also the longest medium and low speed maglev operation line in the world. 2065438+June 2008, the first commercial maglev version 2.0 train in China rolled off the assembly line at CRRC Zhuji Electric Locomotive Co., Ltd.
It can be seen that before 20 16, China had not produced its own maglev train, but after the maglev train produced in China was put into operation on May 6, 20 16, the maglev train in China was made in China.
Extended data:
201September 17, the reporter learned from CRRC Zhuji Electric Co., Ltd. that it participated in the special sub-project of "Research on Key Technologies of High-speed Maglev Transportation System" in the "Thirteenth Five-Year Plan".
Long stator linear motor and suspension electromagnet have been independently developed and successfully applied to the prototype of 600 km/h maglev train in China, and they have been running well so far. This means that the key technology of China high-speed maglev train is in the forefront of the world.
He Yunfeng, deputy director of CRRC Zhuji Maglev Products Research Institute, said that high-speed maglev trains and medium and low-speed maglev trains have different requirements for motor drive.
The power supply of medium and low speed maglev trains is mainly through catenary, but this power supply method cannot guarantee the stability of power supply of high-power high-speed maglev trains. In addition, if the train wants to fly at high speed, it should also reduce the body weight as much as possible.
To this end, the company developed a long stator linear motor, which moved the stator part of the short stator linear motor used in the medium and low speed maglev train from the car body to the train track, and was directly powered by the ground power supply equipment to ensure stable power supply.
At the same time, the high-power inverter is also transferred from the train to the ground, which greatly reduces the weight of the train itself. It is reported that the long stator linear motor can not only meet the high power requirements of high-speed operation of vehicles.
It can also provide the suspension force and traction required by the vehicle at the same time. Compared with the short stator structure of medium and low speed maglev, the synchronous control method can improve the motor efficiency by 20% and the motor voltage by more than 10 times.
Baidu encyclopedia-maglev train
People's Network —— The key technology for China to break through the "power heart" of high-speed maglev trains.