摘要
提出了一种改进的双层Halbach永磁阵列结构,利用有限元数值分析方法分别仿真了普通单层和双层Halbach阵列的气隙磁场,比较了不同结构阵列0.25mm气隙处的水平磁场分布特性,对有限元仿真数据进行了谐波分析,最后确定了最优结构尺寸的双层永磁阵列。结果表明,相比单层Halbach永磁阵列,优化的双层Halbach阵列结构可以较大改善气隙磁场的正弦特性,而且一定程度上提高了磁场强度。
An improved double layer Halbach permanent magnet array structure was proposed. By means of finite elementnumerical analysis method, the air-gap magnetic fields of ordinary single and double layer Halbach array were simulatedrespectively, the horizontal magnetic distribution characteristics of arrays with different structure at 0. 25 mm air-gapwas compared, the harmonic analysis of the finite element simulation data was carried out, and finally the double layer permanentmagnet array with optimal structure size was determined. The results show that compared with the single layer Halbachpermanent magnet array, the optimal double-layer Halbach array structure can greatly improve the sinusoidal characteristicsof the air gap magnetic field, and improve the magnetic field strength to a certain extent.
出处
《微特电机》
北大核心
2016年第8期29-31,共3页
Small & Special Electrical Machines
基金
国家自然科学基金项目(51375052)
河北省自然科学基金项目(E2015210082)
关键词
双层Halbach永磁阵列
有限元
气隙磁场
谐波分析
double layer Halbach permanent magnet array
finite element
air-gap magnetic field
harmonic analysis
