Unbalanced Magnetic Force Calculation Based on Subdomain and Magnetic Circuit Hybrid Model in SPM Machines

被引：0
|
作者：
Yin, Hao [1 ]
Wu, Lijian [1 ]
Fang, Youtong [1 ]
机构：
[1] Zhejiang Univ, Coll Elect Engn, Hangzhou, Peoples R China
来源：
2019 IEEE VEHICLE POWER AND PROPULSION CONFERENCE (VPPC) | 2019年
关键词：
unbalanced magnetic force; nonlinearity effect; subdomain and magnetic circuit hybrid model; permanent-magnet machine;
D O I：
10.1109/vppc46532.2019.8952277
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a nonlinear calculation method for unbalanced magnetic force (UMF) in surface-mounted permanent magnet (SPM) machines based on subdomain and magnetic circuit hybrid model (SMCHM). The hybrid model transforms the nonlinearity effect in stator core to equivalent current on the edges of slots. The current densities are obtained by magnetic circuit (MC) and applied to boundary conditions in improved subdomain model of SMCHM. The UMF of SPM machines can be calculated by the predicted nonlinear flux density distributions in air-gap based on Maxwell stress tensor. The excellent accuracy of this nonlinear UMF calculation method based on SMCHM is validated by finite element (FE) method. Besides, it also significantly improves computational speed compared to FE method.
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页数：5
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