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Analysis on the Development Trend of Rare Earth Permanent Magnet Motor Technology

Analysis on the Development Trend of Rare Earth Permanent Magnet Motor Technology

  • Categories:Company News
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  • Time of issue:2021-07-26 09:30
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(Summary description)The development and application of rare earth permanent magnet synchronous motors have expanded the application of permanent magnet synchronous motors in various industries. The remarkable performance characteristics of rare earth permanent magnet motors are light weight, high performance, high efficiency and energy saving. High-performance rare earth permanent magnet motors are the foundation of many new technologies and high-tech industries. It is combined with power electronics technology and microelectronic control technology to produce various mechatronics products with excellent performance, such as CNC machine tools, machining centers, flexible production lines, robots, electric vehicles, environmental protection equipment, high-performance household appliances, and computers and many more. With the continuous development of rare earth permanent magnet motor technology, its industry has gradually shown the following development trends. Develop in the direction of high efficiency and energy saving.

Analysis on the Development Trend of Rare Earth Permanent Magnet Motor Technology

(Summary description)The development and application of rare earth permanent magnet synchronous motors have expanded the application of permanent magnet synchronous motors in various industries. The remarkable performance characteristics of rare earth permanent magnet motors are light weight, high performance, high efficiency and energy saving. High-performance rare earth permanent magnet motors are the foundation of many new technologies and high-tech industries. It is combined with power electronics technology and microelectronic control technology to produce various mechatronics products with excellent performance, such as CNC machine tools, machining centers, flexible production lines, robots, electric vehicles, environmental protection equipment, high-performance household appliances, and computers and many more. With the continuous development of rare earth permanent magnet motor technology, its industry has gradually shown the following development trends. Develop in the direction of high efficiency and energy saving.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2021-07-26 09:30
  • Views:
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The development and application of rare earth permanent magnet synchronous motors have expanded the application of permanent magnet synchronous motors in various industries. The remarkable performance characteristics of rare earth permanent magnet motors are light weight, high performance, high efficiency and energy saving. High-performance rare earth permanent magnet motors are the foundation of many new technologies and high-tech industries. It is combined with power electronics technology and microelectronic control technology to produce various mechatronics products with excellent performance, such as CNC machine tools, machining centers, flexible production lines, robots, electric vehicles, environmental protection equipment, high-performance household appliances, and computers and many more. With the continuous development of rare earth permanent magnet motor technology, its industry has gradually shown the following development trends. Develop in the direction of high efficiency and energy saving.

The rare earth permanent magnet motor is another high-efficiency energy-saving product. The average power saving rate is as high as 10% or more, and the special rare earth permanent magnet motor can be as high as 15%-20%. The energy saving of electric motors is divided into two aspects. On the one hand, it is to reform the structure of asynchronous motors to improve efficiency and other performance. Asynchronous motors are widely used in various fields of industrial production due to their simple structure, low price, and adaptability to various working conditions. The second is the development of permanent magnet synchronous motors, which can achieve higher power-saving effects.

The main way to improve the efficiency of motors abroad is to increase the amount of effective materials such as copper, aluminum, and electrical steel plates through the optimized design of asynchronous motors to reduce winding loss and iron loss; use better magnetic materials and processes to reduce iron loss: Reasonably design the ventilation structure and select high-performance bearings to reduce mechanical losses; through improved design and technology to reduce stray losses, high-efficiency asynchronous motors have been developed abroad. According to my country's national conditions, high-performance rare earth permanent magnet materials have been industrialized, the output of NdFeB has now ranked first in the world, and the price of NdFeB has also tended to be reasonable. Therefore, the development of permanent magnet synchronous motors is one of the development trends of motor industry technology in the new century.

Towards the direction of mechatronics

To improve the level of traditional electromechanical products, we must firmly grasp the link of electromechanical integration. The basis for the realization of mechatronics is the development of various high-performance rare earth permanent magnet motors for various mechatronics, such as servo motors for CNC machine tools and VCM voice coil motors for computers. A 60-tool machining center must be equipped with 30 servo motors. Frequency conversion speed regulation rare earth permanent magnet synchronous motors and brushless DC motors are the basis of mechatronics. The development of modern equipment in the direction of high performance puts forward various high performance requirements to the motor industry, such as military equipment requirements to provide various high performance signal motors, mobile power stations, servo systems and motors for automation equipment, high performance for aerospace, High-reliability permanent magnet motors, high-speed precision frequency conversion synchronous motors for chemical fiber equipment, high-speed ratio rare earth permanent magnet servo motors for CNC machine tools, machining centers, and robots.

High-precision swing motors and spindle motors for computers, etc.

Development towards dedicated motors

The load driven by the motor is ever-changing. For example, all general-purpose motors are used. In some cases, the technology and economy are very unreasonable. Therefore, foreign countries are vigorously developing special motors. Special motors account for about 80% of the total output, and general motors account for 20%. On the contrary in my country, special motors only account for 20%, and general-purpose motors account for 80%. Special motors are specially designed according to different load characteristics, such as rare earth permanent magnet motors for pumping units used in oil fields, and the power saving rate is as high as 20%. The potential for energy saving in this area is great. Motor workers should not only study the motor itself, but also study the characteristics of the driving load, and design rare earth permanent magnet motor products with advanced performance, reliable operation and reasonable price.

Developing towards light weight

Aerospace products, electric vehicles, CNC machine tools, computers, audio-visual products, medical equipment, portable opto-mechanical and electrical integration products, etc., all have strict requirements on motors that are small in size and light in weight. Permanent magnet synchronous motor has the advantages of small size, energy saving, good control performance, easy to be made into low-speed direct drive, elimination of gear reduction device, speed regulation through frequency change, etc., and it has been developed and applied in elevator technology. It is believed that with the development of electronic technology and control technology, rare earth permanent magnet synchronous motor technology will develop and improve in the direction of high efficiency, energy saving, mechatronics, high performance, special motors, and lightness.

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