Does the permanent magnet motor often demagnetize burn? Permanent magnet synchronous motor manufacturers to think about ways:

Permanent magnet motor uses permanent magnet to generate motor magnetic field, no excitation coil no excitation current, high efficiency simple structure, is a good energy-saving motor, with the advent of high-performance permanent magnet materials the rapid development of control technology. The application of permanent magnet motors will become more extensive. However, people who often use the permanent magnet motor will find that it is often demagnetized burned, causing great losses. Today, permanent magnet synchronous motor manufacturers come to think of solutions.

1. Keep it clean

In the operation of the permanent magnet motor, dust, water stain other debris are allowed within less than 3 meters around the air inlet to prevent inhalation of the motor, forming a short circuit medium, damaging the wire insulation, causing a short circuit burning the motor. Therefore, it is necessary to ensure that the permanent magnet motor has sufficient insulation resistance a good ventilation cooling environment. In order to keep the permanent magnet motor in a safe stable working state for a long time.

2. Observe whether the permanent magnet motor has vibration noise

If the permanent magnet motor vibrates, it will cause the load part connected with it to have different concentricity, resulting in the increase of the permanent magnet motor load, the overload operation will burn the motor. Therefore, in the operation of permanent magnet motors, especially high-power permanent magnet motors, it is necessary to often check whether the anchor bolts, end caps, bearing caps, etc. are loose, whether the grounding device is reliable, to solve the problem in time.

There is also a point that the permanent magnet synchronous motor manufacturers want to say is that if the motor overload time is too long, the permanent magnet motor will absorb a large amount of active power the power grid, the current increases, the temperature rises, the insulation of the permanent magnet motor will age at high temperature, the magnetic steel will lose magnetism. Therefore, the motor should be checked in time to prevent overload operation.