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

Date:2020-04-20 21:59:04

Most high-speed motors refer to motors that exceed 10000r/min. It has high speed, high density, and a volume much smaller than ordinary motors, which can effectively save materials. It can also be connected to the prime mover, eliminating the traditional reduction mechanism, resulting in high transmission efficiency and low noise. Furthermore, high-speed motors have a small moment of inertia, resulting in fast dynamic response. So let's take a look at the factors behind choosing high speed.

1. Deceleration can meet low-speed requirements with better performance;

2. High speed motors have high control accuracy, with a speed error of 10 r/min being 0.1% for a 10000 r/min high-speed motor and 10% for a 100 r/min high-speed motor;

3. Easy to make, relatively small in size, and relatively low in price;

4. The operation is less affected by load changes. For low-speed motors, the same magnitude of load change directly acts on the motor, while for high-speed motors that have undergone N times reduction, the force is only 1/N.

With the continuous emergence of new materials and the continuous improvement of processing technology, technology will inevitably advance at a faster pace. High speed motors are gradually becoming popular, so they generally need to be reduced by a reduction gear device to output high torque power, so their noise is relatively higher than that of low-speed motors. High speed motors have more complex production processes and higher costs than low-speed motors. When choosing, do not make the wrong choice because the motor noise is slightly loud.