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The development trend of rare earth ndfeb magnets in the motor industry _ ndfeb strong magnet manufacturers

by:Newland     2020-04-05
Rare earth permanent magnet motor technology development trend of rare earth ndfeb permanent magnet synchronous motor development and application of rare earth permanent magnet synchronous motor has expanded the application of permanent magnet synchronous motor in various industries, rare earth permanent magnet motor is the most distinct characteristics of the light-duty, high-performance, high efficiency and energy saving. High performance rare-earth permanent magnet motor is the basis of many new technologies and high technology industries. It combined with power electronics technology and microelectronic control technology, can produce all kinds of excellent mechanical and electrical integration products, such as nc machine tools, machining centers, flexible production line, robots, electric cars, high-performance household electrical appliances, computer and so on. With the continuous development of rare earth permanent magnet motor technology gradually to present the following trend of development of the industry. To develop in the direction of high efficiency and energy saving of rare earth permanent magnet motor is a kind of high efficiency and energy saving products, the average energy saving rate is as high as 10% above, special rare earth permanent magnet motor can be as high as 15% ~ 20%. The energy saving of the motor in two aspects. On the one hand is to reform the structure of the asynchronous motor, improve efficiency and other performance, asynchronous motor with its simple structure, cheap price, to adapt to the working conditions of various advantages of various fields are widely used in industrial production. The second is the development of permanent magnet synchronous motor, can obtain higher energy-saving effect. Abroad the main way to improve the efficiency of the motor, is designed through the optimization of asynchronous motor, increase effective materials such as copper, aluminum, electrical steel dosage, reduce the loss of winding and iron loss; Using good magnetic materials and technology, in order to reduce iron loss, reasonable design of ventilation and selects the high performance bearing structure, reduce mechanical wear and tear; By improving the design and process, reduce the stray loss, abroad has developed efficient asynchronous motor. According to China's national conditions, the high performance of rare earth permanent magnet materials has realized industrialization, and the production of ndfeb is now the world's first, the summary of prices tend to be reasonable. So the development of permanent magnet synchronous motor is one of motor industry technology development trend in the new century. To develop in the direction of electromechanical integration to improve the level of traditional mechanical and electrical products, must hold the mechanical and electrical integration of this link. Realize the basis of mechanical and electrical integration, is the development of a variety of mechanical and electrical integration of all kinds of high performance rare-earth permanent magnet motor, such as CNC machine with servo motor, computer use VCM voice coil motor. A processing center, 60 knife should be equipped with 30 servo motor. Frequency control of motor speed of rare earth permanent magnet synchronous motor and brushless dc motor is the basis of the electromechanical integration. To develop in the direction of high performance equipment to ask all kinds of high performance motor industry, such as military equipment required to provide all kinds of high performance signal motor, mobile power station, automatic makeup standby and motor servo system, high performance, high reliability, permanent magnet motor used in aerospace, chemical fiber equipment with high frequency control of motor speed synchronous motor speed control precision, numerical control machine, processing center, robot with high ratio of rare earth permanent magnet servo motor, computer with high precision oscillating motor and spindle motor and so on. To develop in the direction of electric motor driven load, such as all adopt the universal motor, in some cases, the technical and economic is not very reasonable. So foreign developing special electric machine, special machine accounts for about 80% of the total output, general motors (20%). But on the contrary, in China accounted for only 20% of motor, universal motor accounted for 80%. Dedicated motor is according to the different load characteristic of specialized design, such as oil field with a pumping unit is special rare earth permanent magnet motor, power saving rate is as high as 20%. This aspect of the energy saving potential is very large. Motor workers should not only study the motor itself, but also should institute to drive the load characteristics, design of advanced performance, reliable operation, reasonably priced products of rare earth permanent magnet motor. To develop in the direction of light-duty aerospace products, electric vehicles, nc machine tools, computer, audio-visual products, medical devices, portable integrates light, etc. , are put forward on the motor strict requirements of small volume, light weight. Permanent magnet synchronous motor with its small size, energy saving, good control performance, and easy to make direct drive at low speed, remove the gear speed reducer, through frequency change speed, etc, in the elevator technology development and application. Believe that with the development of electronic technology and control technology, rare earth permanent magnet synchronous motor technology will toward high efficiency and energy saving, electromechanical integration, high performance, special light-duty motor, the direction of the development and improvement.
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