Modelling of Stress and Deformation of Interior Permanent Magnet Integrated Motor for Ball Mill Considering Rotor Eccentricity

IF 1.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Electric Power Applications Pub Date : 2025-09-01 DOI:10.1049/elp2.70086

Jun Gao, Xueyan Han, Zhongliang An, Zhanyang Yu, Huadong Xing

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Abstract

The interior permanent magnet integrated motor (IPMIM) for ball mill has complex eccentricity problems. In order to solve the difficult problem of calculating the strength and stiffness of IPMIM in eccentric state, a mathematical model under eccentricity was established. Analytical solutions for the rotor stress and deformation were respectively derived for parallel eccentricity, inclined eccentricity, and composite eccentricity. By using the analytical solutions and finite element method, the stress and deformation of the rotor for IPMIM with a power of 210 kW were analysed. The results show that the calculation results obtained by two methods are highly consistent, which proves that the analytical solutions can accurately predict the stress and deformation of the rotor of IPMIM for ball mill. In addition, based on the analytical modelling, the influence of magnetic tensile stress and structural parameters on the rotor stress and deformation were explored, aiming to summarise the variation laws of the stress and deformation of the rotor.

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考虑转子偏心的球磨机内置永磁集成电机应力与变形建模

球磨机内嵌式永磁集成电机存在复杂的偏心问题。为了解决偏心状态下IPMIM强度和刚度的计算难题，建立了偏心状态下IPMIM强度和刚度的数学模型。分别推导了平行偏心、倾斜偏心和复合偏心转子应力和变形的解析解。采用解析解和有限元方法，对功率为210 kW的IPMIM转子的应力和变形进行了分析。结果表明，两种方法的计算结果高度一致，证明了解析解能够准确预测球磨机IPMIM转子的应力和变形。此外，在解析建模的基础上，探讨了磁拉应力和结构参数对转子应力和变形的影响，旨在总结转子应力和变形的变化规律。

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来源期刊

Iet Electric Power Applications 工程技术-工程：电子与电气

CiteScore

4.80

自引率

5.90%

发文量

104

审稿时长

3 months

期刊介绍： IET Electric Power Applications publishes papers of a high technical standard with a suitable balance of practice and theory. The scope covers a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis are also sought, provided that the arguments are conveyed succinctly and the conclusions are clear. The scope of the journal includes the following: The design and analysis of motors and generators of all sizes Rotating electrical machines Linear machines Actuators Power transformers Railway traction machines and drives Variable speed drives Machines and drives for electrically powered vehicles Industrial and non-industrial applications and processes Current Special Issue. Call for papers: Progress in Electric Machines, Power Converters and their Control for Wave Energy Generation - https://digital-library.theiet.org/files/IET_EPA_CFP_PEMPCCWEG.pdf