What is the difference between high-speed motors and low-speed motors?

[HeidiLynn]

The differences between high-speed motors and low-speed motors are as follows: 1. Different design perspectives: From a design perspective, high-speed motors have a small rotor diameter and a large length; low-speed motors have a large rotor diameter and a small length. A smaller diameter means a relatively smaller linear speed of the rotor's outer diameter, and the centrifugal force on the embedded windings during high-speed rotation is relatively small, making them suitable for high-speed operation. Here, high-speed specifically refers to tens of thousands of revolutions, while general motors operate at a few thousand revolutions, which does not reflect this design concept. 2. Different motor power: Due to the high speed, high-speed motors have a high power density, and their volume is much smaller than that of low-speed motors, effectively saving materials. 3. Different efficiency: High-speed motors are directly connected to the prime mover, eliminating the traditional speed reduction mechanism, resulting in high transmission efficiency and low noise; low-speed motors produce more noise.