关键词: 内置式永磁同步电机, 径向电磁力, 振动噪声, 优化, A 计权声压级

Abstract: Two methods were proposed for suppressing motor vibration and noise in an interior V-shaped permanent magnet synchronous motor by using rotor skewed poles and stator tooth opening auxiliary slots. The time-frequency harmonics and spatial order harmonics of the radial electromagnetic force of a PMSM with a rated power of 11 kW and a rated speed of 8 200 r / min were calculated using the electromagnetic field finite element simulation method. The vibration noise of the motor was calculated through finite element simulation and prototype experiments, and the SPL of the two were compared. It was found that the error was within a reasonable range. The vibration noise of the motor could be suppressed by using the V-shaped skewed pole of the rotor permanent magnet and the auxiliary slot of the stator teeth, which can reduce the A-weighted sound pressure level of the motor.

Key words: interior permanent magnet synchronous motor ( IPMSM ), radial electromagnetic force, vibration and noise, optimization, A-weighted SPL