Decoding permanent magnet synchronous motors: the source of power for high efficiency and wide application

January 16 14:02 2025

1. Permanent magnet synchronous motor – the core carrier of efficient powerPermanent magnet synchronous motor, as an outstanding representative in the field of electric motors, has an operating mechanism that cleverly combines the principles of permanent magnets and electromagnetic induction. Specifically, it generates a stator magnetic field stably through permanent magnets, and uses electric current to stimulate a rotating magnetic field in the carefully wound stator winding. What is particularly unique is that during operation, the stator magnetic field and the rotor magnetic field always maintain a precisely synchronized rotation speed. The two operate in unison like a tacitly coordinated dancer, hence the name “synchronous motor”.

From the perspective of structural composition, permanent magnet synchronous motors mainly cover the following key parts:

1. Stator: Usually made of silicon steel sheets stacked layer by layer, this design can effectively reduce hysteresis loss and eddy current loss. In the slots of the stator, there are multiple groups of precisely designed stator windings tightly wound, which are the key parts for converting electrical energy into magnetic field energy.

2. Rotor: Made of high-performance permanent magnetic materials (such as advanced NdFeB permanent magnets) with high magnetic energy product and strong coercive force. When the rotor rotates, it can generate a strong and stable magnetic field, providing a solid foundation for the efficient operation of the motor.

3. Controller: As the “smart brain” of the motor operation, it uses advanced electronic control technology to accurately adjust the current size, phase and amplitude of the input stator winding, thereby achieving precise control of the motor speed, torque and other operating conditions, ensuring that the motor can operate stably and efficiently under various operating conditions.

2. Working Principle of Permanent Magnet Synchronous Motor – The Crystallization of Technology and WisdomThe operation process of a permanent magnet synchronous motor is like a precisely choreographed technological feast.

The permanent magnets on the rotor are subjected to a stable and continuous driving force under the strong effect of the stator’s rotating magnetic field. This driving force prompts the rotor to closely follow the rotation rhythm of the stator magnetic field and rotate steadily at the same speed.

The controller plays a vital role in the entire operation process. With its keen “perception ability” and precise “computing ability”, it monitors the operating status of the motor in real time, and quickly and accurately adjusts the current parameters of the input stator winding according to the preset control strategy. By cleverly adjusting the current phase and amplitude, the motor speed can be precisely regulated and the torque can be finely controlled, ensuring that the motor can maintain efficient and stable operation under various complex working conditions.

It is precisely this exquisite synchronous operation characteristic that enables permanent magnet synchronous motors to demonstrate unparalleled efficiency and stability advantages in many application scenarios, making them a popular power choice in modern industry and technology.

Media Contact
Company Name: Anhui Mingteng Permanent-Magnetic Machinery & Electrical Equipment Co., Ltd.
Email: Send Email
Country: China
Website: https://www.mingtengmotor.com/