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Why don’t Tesla and NIO use permanent magnet synchronous motors?

For the motor of electric vehicles, the importance is no less than that of the transmission of ordinary fuel vehicles. With the gradual rise of electric vehicles, the drive motor has become the new darling of the majority of car companies. I believe that everyone is familiar with the motor. An electric vehicle is an electrical component that converts electrical energy and mechanical energy. The attribute of the motor itself is starting and accelerating. It adjusts the torque and at the same time determines the starting, Stop, accelerate and decelerate. At the same time, the motor also determines the performance of the vehicle.

For the motor of electric vehicles, the importance is no less than that of the transmission of ordinary fuel vehicles. With the gradual rise of electric vehicles, the drive motor has become the new darling of the majority of car companies. I believe that everyone is familiar with the motor. An electric vehicle is an electrical component that converts electrical energy and mechanical energy. The attribute of the motor itself is starting and accelerating. It adjusts the torque and at the same time determines the starting, Stop, accelerate and decelerate. At the same time, the motor also determines the performance of the vehicle.

According to the existing vehicles, the motors can be divided into AC asynchronous motors and permanent magnet synchronous motors. The current mainstream domestic models use permanent magnet synchronous motors. There are only a handful of manufacturers using asynchronous motors, while Tesla, Why doesn’t NIO use permanent magnet synchronous motors? In terms of the structure of the motor, this type of motor has a relatively simpler structure and lower cost. Compared with a permanent magnet synchronous motor, a permanent magnet synchronous motor has a more complicated structure than an asynchronous motor. The cost of the vehicle is also relatively high.

Why don’t Tesla and NIO use permanent magnet synchronous motors?

Secondly, in terms of the work of the motor, the asynchronous motor is relatively stable when it is working. The high temperature, short circuit, or even the violent vibration of the motor working condition will not cause the motor to lose magnetism when it is working. Working in a complex working environment, it also has a relatively strong ability to adapt to large changes in the surrounding working temperature. Performance is relatively stable.

Why don’t Tesla and NIO use permanent magnet synchronous motors?

Finally, it is convenient for maintenance. It does not need to consider demagnetization maintenance during maintenance, and the magnetic pole response under over-speed conditions is relatively stable.

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