Electromagnetic Vibration and Noise Comparison of Amorphous Metal PMSMs and Silicon Steel PMSMs

This paper investigates the differences in the electromagnetic vibration and noise of an amorphous metal (AM) permanent magnet synchronous machines (PMSMs) and silicon steel (SS) PMSMs. The electromagnetic vibration and noise of an AM PMSM and an SS PMSM sharing the same structure and dimensions are calculated under different conditions: 1) only radial forces (RFs); 2) only magnetostriction (MS) effects; and 3) both RFs and MS effects, and the calculated results of the two machines are compared. The effects of Young's modulus parameters and the MS coefficients of stator cores on the electromagnetic vibration and noise are analyzed. The vibration and noise of the AM PMSM and SS PMSM prototypes are tested and compared with the corresponding calculated results to verify the accuracy of the calculated results.