For the cause of electromagnetic noise, the following m […]
For the cause of electromagnetic noise, the following methods can be used to reduce the electromagnetic noise of the aluminum shell motor:
1 Select the appropriate groove fit to avoid low-order force waves, use rotor chute, and tilt one stator slot;
2 Choosing the appropriate air gap magnetic density should not be too high, but too low will affect the material utilization rate. The magnetic circuit of the stator and rotor should be symmetrical and uniform, and the lamination pressure is tight;
3 Try to use sinusoidal windings to reduce harmonic components, and avoid frequent resonance of the stator and rotor.
4 Fixed, rotor processing and assembly should pay attention to their roundness and coaxiality, as much as possible using the hot sleeve or the stator to press the rear end of the car seat end of the process, can be used to connect the base and end cover Structure, better to ensure coaxiality, reduce stator and rotor eccentricity;