CRRC Zhuzhou Motor Company released the TQ-800 permanent magnet synchronous traction motor for high-speed EMUs with a speed of 400 kilometers per hour on the 17th. This marks the first time that China's high-speed rail power has built a permanent magnetic traction motor product technology platform with a speed of 400 kilometers per hour, which fills the domestic technological gap and lays a solid foundation for the upgrading of China's rail transit traction drive technology.
According to Li Guang, deputy director of the traction motor research institute of CRRC Zhuzhou Motor Company, this "permanent magnet high-speed rail" motor has many advantages. Such as the use of new closed air cooling and directional cooling technology of key parts to ensure the internal cleanness of the motor and effectively balance the temperature of each part of the motor; the use of new rare earth permanent magnet materials effectively solves the problem of permanent magnet demagnetization; combined with high power The advantages of the locomotive and high-speed rail traction motor insulation structure have higher insulation reliability.
Li Guang said that compared with traditional asynchronous traction motors, this "permanent magnet high-speed rail" motor has comparative advantages such as higher power density, higher efficiency, stronger environmental adaptability, and lower life cycle cost.
After experiencing "DC" and "AC", the world's rail transit vehicle traction technology is developing towards the "permanent magnet" drive technology of version 3.0. The performance indexes of this permanent magnet synchronous traction motor have reached the international advanced level, and will be used to drive China's key research and development project-a 400 km / h transnational interconnected high-speed train.
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