650 km/h in 7 seconds: China sets new record in maglev technology

In a significant breakthrough for China's magnetic levitation (maglev) technology, researchers at the Donghu Laboratory in central China's Hubei Province have successfully accelerated a 1.1-tonne test vehicle to 650 km/h within just 1,000 meters, using advanced magnetic levitation support and electromagnetic propulsion systems.

The test data showed that the vehicle reached the remarkable speed in about 7 seconds with a running distance of 600 meters, Li Weichao, director of the High-speed Maglev Electromagnetic Propulsion Technology Innovation Center at the lab, told China Media Group.

"This is the fastest speed in the world," said Li.

The achievement was made possible by the lab's self-developed high-speed maglev test track that stretches only 1,000 meters in length.

Unlike conventional speed tests that require long tracks, usually 30 to 40 kilometers, the new test track has employed a short-distance acceleration method, which demands ultra-precise speed and positioning measurements.

"The current speed measurement and positioning accuracy can reach up to 4 millimeters," said Li.

Under the influence of electromagnetic forces, a "like-pole repulsion" effect occurs between the test vehicle and the track, with no physical contact between the two. The test vehicle levitates above the track, and during acceleration, it is not constrained by friction and only needs to break through air resistance.

Li added that the speed of 650 km/h is not the ultimate goal for the test line. "Its typical operating speed is 800 km/h. The entire construction is expected to be completed by the end of this year, and the platform will meet the conditions for acceptance."

In addition to achieving remarkable acceleration, the advanced technologies allow the vehicle to decelerate to zero in just 200 meters. With precise control of both acceleration and braking, the test track is set to become a crucial platform for high-speed train research and the development of other advanced transportation technologies.

Li also noted that there are many potential applications in civilian sectors, adding that the technologies used in the test line are already being applied in other research facilities.