The application of rare earth permanent magnet motor in various industries

1 Energy-saving rare earth permanent magnet motors are mainly used for consumption, such as rare earth permanent magnet synchronous motors for textile and chemical fiber industries, petroleum, mining, rare earth permanent magnet synchronous motors in coal mine transportation machinery, rare earth permanent magnet synchronous motors to drive various pumps and fans.

2 Various rare earth permanent magnet motors are used by various types of vehicles (cars, motorcycles, trains), and rare earth permanent magnet motors are the largest market. According to statistics, about 70% of rare earth permanent magnet motors are used in vehicles. For luxury cars, there are more than 70 sets of motors for various applications. Since the requirements of various automobile motors are different, the selection of permanent magnet materials is different. Motor magnets are used in air conditioners, fans, and electric windows. From the perspective of price, the advantages of ferrite will continue in the future. Ignition coils, drives, and sensors still use Sm-Co sintered magnets. In addition, auto parts, but also electric vehicles can not be ignored, as an environmentally friendly (EV) and hybrid electric vehicles (HEV).

3 Rare earth permanent magnet motor AC servo system A set of electromechanical integration machinery with electronic, high performance and speed control system. The system is a self-controlled permanent magnet synchronous motor body. The system is used in the development of CNC machine tools, flexible manufacturing technology; and also in electric vehicles, rather than traditional thermally powered vehicles, for the freedom of vehicle emissions. Rare earth permanent magnet motor is a promising high-tech industry.

4 The new field is mainly for the support of the low-power rare earth permanent magnet synchronous motor variable frequency speed control system for new air conditioners and refrigerators, wireless electric gadgets for various rare earth permanent magnet DC micro motors, rare earth permanent magnet brushless DC motors are Instruments with different power. Such motors are also in great demand.

5 Rare earth permanent magnet materials with advantages in aerospace applications make them very suitable for aero-engine applications. Although there are some applications of rare earth permanent magnet motors in the air (such as generator voltage and short-circuit protection, etc.), experts at home and abroad agree that rare earth permanent magnet motors are an important development direction for a new generation of aero-engines.

The cost of permanent magnet motor:

Ferrite permanent magnet motors, especially miniature permanent magnet DC motors, have been widely used due to their simple structure and process, reduced weight, and generally lower total cost than electric excitation motors. Since rare earth permanent magnets are still relatively expensive at present, the cost of rare earth permanent magnet motors is generally higher than that of electric excitation motors, which needs to be compensated by its high performance and operating cost savings.

In some occasions, such as voice coil motors of computer disk drives, the performance of NdFeB permanent magnets is improved, the volume and mass are significantly reduced, and the total cost is reduced. In the design, it is necessary to compare the performance and price according to the specific use occasions and requirements to decide the choice, but also to innovate the structural process and design optimization to reduce the cost.