The new-generation high-speed train permanent magnet synchronous traction system developed by CRRC can improve the traction efficiency of the train and save a lot of electric energy by using the high-efficiency characteristics of the permanent magnet motor. At the same time, it can improve the integration of high-speed rail in China in terms of energy saving, emission reduction, safety and comfort. Competitive advantages.

The high-speed train adopts the permanent magnet synchronous traction system. On the one hand, it can fully utilize the characteristics of the high power density of the permanent magnet motor and reduce the dynamic drag ratio of the train (refer to the ratio of the power train to the unpowered train in a train of fixed trains). For example, a train that originally required 6 moves and 2 tows, after equipped with a permanent magnet motor, only needs to use 4 moves and 4 tows. The cost of the traction system of the 2 moving cars saved will make the whole train with permanent magnet motor traction. The system cost is reduced by 20%.
On the other hand, by improving the traction efficiency of the train, a large amount of electric energy can be saved, and the life cycle cost of the train can be reduced. It is estimated that the current data of subway operation statistics is that the average energy consumption per kilometer of a train is 13 degrees. According to the average daily run of 250 kilometers for one train and one train for 20 trains, the energy consumption of one line is 65000 degrees per day. According to the calculation of 0.85 yuan / kWh, if the 96 rail transit lines planned and constructed in 2015 all adopt the permanent magnet synchronous traction system, the annual energy consumption of the new line will save 192 million yuan.

Finally, the permanent magnet high-speed rail motor is completely enclosed, with low noise and low maintenance. Due to the structure and electromagnetic characteristics of the permanent magnet traction motor, the system noise is significantly lower than that of the asynchronous motor at low speed in the field application of the subway. The overall system noise is reduced by about 3 decibels. Without the tedious task of cleaning the screen, the life cycle cost of the system is greatly reduced.
Since the traction system is the core technology of the locomotive, although France, Germany, Japan and other countries are developing the permanent magnet traction system, it has been technically blocked against China. Although the development of Chinese permanent magnets in rail transit started late, At present, it has gradually caught up with the advanced level of foreign countries. In 2014, the lower line of Zhuzhou's permanent magnet high-speed rail marked that China has become one of the few countries in the world to master high-speed rail permanent magnet traction system technology.