On the 11th, it was learned from CRRC Times Electric that the permanent magnet traction system of Changsha Rail Transit Line 1 passed the pre-carriage review a few days ago. The first "permanent magnet subway" in China has officially begun its operation on Changsha Metro Line 1.

According to reports, Changsha City Rail Transit Line 1 permanent magnet traction system train is China's first subway train equipped with autonomous permanent magnet traction system. In early 2015, the overall design of the permanent magnet traction train was completed. In March 2016, the train was officially put into trial operation on the main line. As of July 7, the train has completed 12,500 kilometers of trouble-free trial operation.

"Compared with ordinary subway trains, the biggest difference between permanent magnet traction trains is that they use more efficient and energy-saving permanent magnet motors as power, which helps to achieve green travel." Shang Jing, deputy general manager and chief engineer of CRRC Times Electric Introduce that the traction electric drive system is the "heart" unit of the rail vehicle to achieve power drive. Its performance determines the power quality, energy consumption and control performance of the rail vehicle to a certain extent. It is one of the core systems of the rail vehicle. One. The energy consumption of the traction system accounts for about 40-50% of the total energy consumption of the rail transit system. The latest test results show that the traction energy consumption of a train with a permanent magnet traction system can be reduced by about 11.5% compared with a traditional asynchronous traction system. If the regeneration energy of the traction system is considered, the overall energy consumption of the permanent magnet traction system can be reduced by about 30%.