Brushless motor in order to keep good performance, are selected for ndfeb permanent magnets. Ndfeb is a kind of rare earth permanent magnet material, is to use different rare earth element and transition metals (Fe, Co, Ni, etc. )Composed of intermetallic compounds. It has a high magnetic properties, linear magnetic back, high temperature resistant, good temperature stability, etc. Mainly used in micro rare earth permanent magnet motor controller, motor, electric vehicles, such as maglev train high-tech energy-saving products. With the rapid development of the industry, the application of rare earth permanent magnet material is becoming more and more widely.
many elements used in rare earth permanent magnet are mineral products, is a kind of non-renewable resources. Although the reserves are abundant, but the country for this kind of wasting resources control more strictly, specifies the exploration and production in the professional enterprise. This kind of circumstance also caused the rising of rare earth permanent magnet material price, also caused the rising cost of brushless motor controller directly. On the application of the brushless motor controller promotion caused some influence, makes its expansion speed slow.
of course, for this kind of non-renewable resources, appropriate control is necessary, the development of science and technology cannot be carried at the cost of the resources of the offspring!
