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What are the effects of tile permanent magnet materials used in the automobile motor on the motor performance?
Dec 08, 2017

At present, permanent magnet materials are widely used in various motors. Especially in automotive permanent magnet motors, the proportion of total products is very large. This is mainly because the permanent magnet motor structure is more compact, size is small and  weight is light. It also has the advantages of high efficiency, reliable performance and so on. At the same time, the tile permanent magnet materials used in the automobile motor will affect its overall performance to a great extent.

 

Generally speaking, the influence of tile permanent magnet material used in automobile motor on motor performance can be summarized into the following four aspects:

First, in general, the greater the magnetic energy is, the better it will be, because this can greatly improve the working efficiency of the motor. Second, the better the rectangularity of the demagnetization curve is, the less obvious the dynamic loss of the motor will be. Third, the higher the resistivity of the permanent magnet ferrite will be, and the smaller the eddy current loss will be. Fourthly, the temperature coefficient of the permanent magnet ferrite is small, so that the permanent magnet ferrite has better temperature stability under high temperature conditions. Therefore, in fact, the effect of tile permanent magnet material used in automobile motor on motor performance is relatively large.

 

For this reason, when selecting tile permanent magnet materials used in automobile motor, considering the actual application requirements, we must first ensure that the properties of the materials meet the use requirement. For example, in order to achieve a higher rotation speed of  the motor, the material selected should have higher Br to achieve a higher output and power.

 

In short, the design of automobile motor is actually a very complex and dynamic process, which often involves many aspects. In particular, the tile permanent magnet material used in automobile motor should be able to overcome the influence of temperature change, stray magnetic field interference and vibration without obvious change.

 

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