摘要
针对磁浮平面电机Halbach磁钢阵列,分析改变磁钢形状对空隙磁感应强度的影响,即用梯形磁钢替换矩形磁钢。通过傅里叶级数和磁标势推导Halbach矩形磁钢阵列的磁感应强度。应用叠加原理和磁钢划分多层得到梯形磁钢阵列的磁感应强度解析表达式,与有限元模型相比具有很好的一致性。分析Halbach矩形磁钢阵列的高阶谐波误差和各个谐波峰值随着y向磁化磁钢边长与极距比值的关系,得到最优的结构参数。在此参数下分析梯形磁钢阵列,得到梯形磁钢可以较大范围的改变空隙磁感应强度。
The changing of magnets shape in Halbaeh permanent magnet array of planar motor was analyzed in the magnetic flux density. That is, the rectangular magnets were replaced by trapezoidal magnets. The magnetic flux density distribution of the Halbach array with rectangular magnets was derived by Fourier series and scalar potential. The magnetic flux density distribution of trapezoidal magnets array was obtained through superposition and dividing magnet in several layers, then has good agreement with the finite element model. The higher harmonics error and peak value of each harmonics of Halbach array with rectangular magnets varying with the ratio between the length of magnet magnetized in y direction and pole pitch were analyzed, then the optimal structure parameter was found. With this structure parameter, the magnetic flux density distribution can be varied in a large range by using the trapezoidal magnets.
作者
刘广斗
张红梅
明五一
LIU Guang-dou;ZHANG Hong-mei;MING Wu-yi(China University of Petroleum College of Mechanical and Electronic Engineering,Qingdao 266580,China;Guangdong HUST Industrial Technology Research Institute,Dongguan 523808,China)
出处
《机电工程技术》
2018年第9期105-108,157,共5页
Mechanical & Electrical Engineering Technology
基金
山东省自然科学基金(编号:ZR2015EQ015)
广东省制造装备数字化重点实验室项目(编号:2017B030314146)
