Structural features and functions of earth permanent magnet motors

Rare earth permanent magnet motors have a wide range of applications and are found in all walks of life. And this motor uses permanent magnet excitation material, which has the advantages of light weight, high performance and high efficiency and energy saving that electric excitation motors cannot match. So what are the structural features and functions of earth permanent magnet motors? Let’s find out together next!

The main structural features are as follows:

1. Simple structure. Compared with traditional motors, the structure is simple, and it has the advantages of small size, light weight, and less consumables. The material selected is earth permanent magnet, which can reduce the weight and size of the motor. The use of earth permanent magnets can increase the magnetic field air gap and facilitate the formation of a new magnetic circuit. When the motor speed is adjusted to the value, the power-to-mass ratio can be improved.

2. High efficiency and energy saving. Rare earth permanent magnet is a high-efficiency and energy-saving product. After the permanent magnet material is installed on the rotor, the rotor and stator magnetic fields run synchronously during normal operation. There is no current in the rotor winding, and there is no rotor resistance and hysteresis loss. Increasing the motor power will result in power saving up to more than 10%. More than 30% of electricity can be saved by using earth permanent magnet motors and variable frequency speed regulation for water pumps, fans and compressors.

3. High performance. The outstanding advantages of earth permanent magnets are their high functionality and large starting torque. In oilfield pumping motors, for equipment that requires large starting torque, small-capacity earth permanent magnet motors can be used to replace large-capacity Y series motors, which saves equipment investment costs and improves the operating efficiency of the system. After CNC machine tools use earth permanent magnet servo motors, the speed regulation ratio is as high as 1:10000. Precision control and driving can be achieved by using earth permanent magnets.

4. It can be made into a large gap to facilitate the formation of new magnetic circuits. The armature reaction is small and the overload resistance is strong.

The role of earth permanent magnets on my country’s economy:

Because earth resources are very abundant in our country, earth permanent magnet motors are widely developed and used in aerospace, agricultural industry, equipment manufacturing, and even in daily life. The product range includes permanent magnet synchronous motors, permanent magnet generators, DC motors, brushless DC motors, AC permanent magnet servo motors, permanent magnet linear motors, special permanent magnet motors and related control systems. The use of earth permanent magnets is al Covering the entire automotive industry.

Rare earth permanent magnets have very good magnetic properties. As long as they are magnetized, they can create a strong magnetic field without external energy. Therefore, they are often used to replace traditional motors. Rare earth permanent magnets not only have high power, simple structure, and reliable operation, but also can Realize the advantages of small size and light weight.

The widespread use of earth permanent magnet motors has now penetrated into all aspects of the national economy, and its production and consumption have become an important symbol of measuring a country's comprehensive national strength and the development level of the national economy.