This article introduces a targeted rotor-step skewing method aimed at effectively mitigating modulated vibration induced by high-order radial force in interior permanent magnet synchronous motors (IPMSMs). Initially, the vibration behavior of a 36-slot/6-pole IPMSM is explored, and the predominant vibration at a specific frequency is determined. Subsequently, the analytical models of the vibration sources, including radial force and bending moment, are developed. Based on this, under the same number of segments, the effects on the modulated vibration mitigation are compared for various combinations of the skewing mode and skewing angle, and the optimal skewing angle of each skewing mode is identified. In addition, in order to counteract the unbalanced magnetic pulling force, asymmetric V-shaped skewing modes are adopted for optimization. Then, a comparative analysis is performed on the skewing models before and after optimization using the finite-element (FE) calculation. The results demonstrate that a 4-typeV skewing model exhibits the best vibration behavior and lower torque loss. Finally, the proposed 4-typeV and conventional skewing rotors are manufactured to verify the analytical calculation and FE simulation. The experimental results confirm that the proposed scheme can effectively reduce modulated vibration in the 36-slot/6-pole IPMSM.
Vibration Mitigation of Interior Permanent Magnet Synchronous Motor Using a Targeted Rotor-Step Skewing Method
IEEE Transactions on Transportation Electrification ; 11 , 1 ; 2160-2170
2025-02-01
4832549 byte
Article (Journal)
Electronic Resource
English
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