volume | PIER Journals

Abstract

In this paper, a hybrid method is proposed for electromagnetic vibration prediction of flatted single-layer interior permanent magnet synchronous machines (IPMSMs) for flywheel application. The proposed hybrid model combines the mesh-based equivalent magnetic network (EMN) model and vibration transfer function method. A small size 4-pole/6-slot flatted single-layer IPMSM for demonstration purposes is manufactured to illustrate the proposed hybrid method. Firstly, the modeling method of the proposed mesh-based EMN model is introduced, and the electromagnetic forces are calculated. Second, the vibration transfer function construction method is introduced. Thirdly, the modal superposition method is applied to compute the electromagnetic vibration acceleration of the 4-pole/6-slot IPMSM. Finally, the simulation and experimental test at rated rotational speed condition are used to verify the effectiveness of the proposed hybrid method, and the vibration acceleration at twice the fundamental frequency from proposed method has the acceptable agreement with tested and simulation. The proposed method can be applied to predict the electromagnetic vibration for flatted single-layer IPMSM with concentrated winding at different operating conditions.

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Dr. Xinjian Jiang

Dr. Lei Zhang

Dr. Fuwang Li

Mr. Sai Zhang