Calculation and analysis of electromagnetic vibration and noise of amorphous alloy permanent magnet motors
                                                                  WANG Qianying1, LU Junwen2, SHU Tao1
（1.Air Traffic Management Center, Civil Aviation Flight University of China, Guanghan 618307, China;2.Aircraft Repair Plant, Civil Aviation Flight University of China, Guanghan 618307, China）

Abstract: Aiming at the problem that poor vibration and noise performance of motor can be caused when amorphous alloy is used as motor core material, the electromagnetic noise and vibration characteristics of amorphous permanent magnet motor were studied. Amorphous alloy Metglas2605SA1 was used as stator core of a permanent magnet motor, the amorphous and silicon steel motor's electromagnetic field distribution, the size of the electromagnetic force, vibration velocity and vibration acceleration, vibration displacement deformation, the noise distribution around the motor and the spectrum analysis were calculated by the finite element method for electromagneticmechanicalfluid coupling. The results show that radial electromagnetic force is the main cause of electromagnetic vibration, the vibration deformation and noise level of amorphous motor are obviously higher than that of silicon steel motor, the noise level of amorphous motor is 5 dB higher than that of silicon steel motor.

Key words: amorphous alloy Metglas2605SA1; stator core; electromagneticmechanicalfluid coupling; electromagnetic vibration