Permanent magnet synchronous motors for electric vehicles
2021-08-31

Permanent magnet synchronous motors for electric vehicles

In the field of pure electric vehicles in recent years, the application of permanent magnet synchronous motors should be regarded as the most extensive. Although it uses alternating current, the structure of a permanent magnet synchronous motor is similar to that of a brushless DC motor, so it also inherits its advantages of simple structure.

The biggest feature of the permanent magnet synchronous motor is that it has a very high power density and torque density, that is to say, under the same weight and volume, the permanent magnet synchronous motor can output higher power and torque. In the same way, under the same power and torque, the use of permanent magnet synchronous motors can obtain the smallest weight and volume, leaving enough space and quality for another extremely important component "power battery".

In addition, the permanent magnet synchronous motor also has the characteristics of low noise, which is also one of the very intuitive advantages for household pure electric vehicles.

Since there are advantages, there are naturally disadvantages. The biggest problem with permanent magnet synchronous motors is their high cost.

Although the permanent magnet material located in the motor is called "permanent magnet", the phenomenon of magnetic decay may also occur in some cases.

The price of permanent magnet materials has remained high, which also affects the high cost of motors and even vehicles.

Permanent magnet synchronous motors are now favored by the vast majority of automakers, and they are also common among models on the market. Many pure electric vehicles are equipped with permanent magnet synchronous motors.


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