In order to determine the assembly scheme of permanent magnet synchronous motor assembly for new energy vehicle, this paper compares the front magnetized rotor with rear magnetized rotor. The study shows that the magnetic flux of the front magnetization scheme is higher than that of the rear magnetization scheme, and its peak value external characteristics, comparison in the controlled variable motor test is less than 2%, which meets the requirements of power performance indicators, and the efficiency indicators of the two schemes are the same.Moreover, the rear magnetization scheme does not affect product performance, it is the best choice for the rotor assembly magnetization process for good assembly process, high yield, and low equipment maintenance cost.

Permanent magnet synchronous motor  /  Rotor assembly  /  Rear-magnetizing process