An Investigation of Zeroth-Order Radial Magnetic Forces in Low-Speed Surface-Mounted Permanent Magnet Machines
An Investigation of Zeroth-Order Radial Magnetic Forces in Low-Speed Surface-Mounted Permanent Magnet Machines
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DOI：
10.1109/tmag.2016.2553642
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发表时间：
2016-04
影响因子：
2.1
通讯作者：
M. Valavi;J. Le Besnerais;A. Nysveen
中科院分区：
文献类型：
--
作者：
M. Valavi;J. Le Besnerais;A. Nysveen
研究了具有非重叠集中绕组的低速高扭矩表面安装永磁 (PM) 电机的零阶振动模式。使用时间步进有限元分析计算气隙中的磁场分布，然后采用麦克斯韦应力张量计算径向力密度。基于径向力密度空间分布均值随时间的变化，研究了零阶径向力。使用简单的结构方程来比较所研究机器的定子变形。分析了第零模态对产生振动的贡献，并与最低非零模态进行了比较。讨论了极槽组合的影响以及整流器负载的影响。本文旨在研究零阶径向力在未连接到脉宽调制 (PWM) 转换器的表面安装永磁电机中是否很重要。
Zeroth mode of vibration is investigated in low-speed high-torque surface-mounted permanent magnet (PM) machines with non-overlapping concentrated windings. Magnetic field distribution in the air gap is computed using time-stepping finite-element analysis, and Maxwell stress tensor is then employed to calculate the radial force density. Based on the time variation of the mean value of the radial force density spatial distribution, the zeroth-order radial forces are studied. Simple structural equations are used to compare the stator deformations for the machines under investigation. Contribution of the zeroth mode to produce vibration is analyzed and compared with the lowest non-zero mode. The influence of pole and slot combinations and the effect of rectifier load are discussed. This paper is carried out to investigate whether or not the zeroth-order radial forces can be of importance in the presented surface-mounted PM machines that are not connected to pulsewidth modulation (PWM) converters.