Effects of Stress and Magnetostriction on Loss and Vibration Characteristics of Motor
Effects of Stress and Magnetostriction on Loss and Vibration Characteristics of Motor
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DOI：
10.1109/tmag.2015.2493098
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发表时间：
2016-03-01
影响因子：
2.1
通讯作者：
Matsuhashi, Daiki
中科院分区：
文献类型：
--
作者：
Ebrahimi, Hassan;Gao, Yanhui;Matsuhashi, Daiki
提出了一种三维有限元磁力分析方法，研究了磁致伸缩和应力对电机铁心损耗和振动的影响。热配合应力计算采用静态结构分析和等效热应力计算方法，等效热应力计算方法采用热应力张量。提出了一种考虑三维应力的铁损计算方法。将该方法应用于永磁电机的铁损和振动分析。数值结果表明，定子铁心的过盈应力会使定子铁心的损耗显著增加。然而，壳体表面的径向速度由于MS而略微减小，并且由于过盈配合应力而进一步减小，因为MS在压缩应力下增大。
A method of 3-D finite element magnetomechanical analysis is developed to investigate the effect of magnetostriction (MS) and stress on the core loss and vibration of motors. Shrink-fit stress calculation is carried out using static structural analysis and equivalent thermal force calculated by a novel method using the thermal stress tensor. A method of core loss calculation is proposed to take account of the 3-D stress in the core loss calculation. The methods are applied to the core loss and the vibration analysis of a permanent magnet motor. Numerical results show that the stator core loss increases significantly due to the shrink-fit stress. However, the radial velocity of the housing surface slightly decreases due to the MS and further decreases due to the shrink-fit stress because the MS increases under compressive stress.