The permanent magnet synchronous motor, referred to as PMSM, is actually an AC motor. Its stator runs with a three-phase difference alternating current, while its rotor is a permanent magnet. In this article, let’s take a closer look at the advantages and applications of permanent magnet synchronous motor.
The biggest advantage of this kind of motor is that the AC power is provided by DC so that the motor can be accurately controlled and the life problem caused by the brush is solved.
1. The motor is small in size and light in weight
In recent years, with the continuous application of high-performance permanent magnet materials, the power density of permanent magnet synchronous motors has been greatly improved. The output torque of permanent magnet synchronous motors under the same volume is about 1.7 times that of induction motors.
2. Wide speed range
The permanent magnet synchronous motor based on the special structure design can adopt the maximum torque/current control strategy during constant torque operation and adopts the field weakening control strategy during constant power operation, which can obtain good speed regulation operation characteristics, and successfully achieved over 5 times the field weakening speed range.
3. Small moment of inertia, high acceleration can be obtained, and good dynamic performance
4. Large overload capacity
The rotor of a permanent magnet synchronous motor has no slippage. When rigid processing is carried out, there will be no surface effect processing abnormality caused by speed fluctuation.
Permanent magnet synchronous motors have the advantages of simple structure, small size, high efficiency, and high power factor. It has been widely used in the metallurgical industry (ironmaking plant and sintering plant, etc.), ceramic industry (ball mill), rubber industry (internal mixer), petroleum industry (pumping unit), textile industry (double twist machine, spinning frame) and other industries in the medium and low voltage motor.
Thank you for reading our article and we hope it can help you to have a better understanding of the advantages and applications of permanent magnet synchronous motor. If you want to learn more about permanent magnets, we would like to advise you to visit Stanford Magnets for more information.
As a leading magnet supplier across the world, Stanford Magnets has been involved in R&D, manufacturing, and sales of magnets since the 1990s. It provides customers with high-quality permanent magnets like SmCo magnets, neodymium magnets, AlNiCo magnets, and ferrite magnets (ceramic magnets) at a very competitive price.