内置式永磁同步电机结构与电磁耦合研究  

Research on Structure and Electromagnetic Coupling of Interior Permanent Magnet Synchronous Motor for Coal Plough Application

作　　者：陈起旭[1] 徐俊[1] 周阳[1] 邹忠月[1] 曹秉刚[1] 

机构地区：[1]西安交通大学机械工程学院,陕西西安710049

出　　处：《防爆电机》2016年第2期1-5,共5页Explosion-proof Electric Machine

基　　金：国家自然科学基金资助项目(51405374)

摘　　要：首先从结构的角度,建立了刨煤机用内置式永磁同步电机的全参数化转子模型,分析了转子在不同转速下的位移分布;得到了电机在最高转速下,考虑磁钢底面胶可靠和失效两种工况下,转子的位移和应力分布。分析结果证明了转子最外圆周处位移最大,而隔磁桥处的应力最大;然而从电磁的角度,分析了不同隔磁桥宽度对空载反电势和气隙磁密的影响,随着隔磁桥宽度的增大,极间漏磁增大,反电势和气隙磁密均呈下降趋势,最后研制了实验样机,空载实验验证了在额定转速下,线反电势最大值和有效值和仿真结果误差在2%以内,同时电机在最高转速工况运行,转子运行可靠,没有出现与定子扫膛现象,证明了隔磁桥取值的合理性。In this paper,the full parametric rotor model of interior permanent magnet synchronous motor for coal plough application was firstly built from the aspect of structure,displacement distribution of rotor at different speeds was analyzed. The displacement and stress distributions of rotor of the motor at the highest speed were obtained at two conditions of gelatin being reliably and ineffectively coated on the undersurface of magnetic steel. The analytical result has proved that the largest displacement was occurred at circumcircle and the largest stress was located in magnetic separation bridge. However,the influence of different magnetic separation bridge width on no-load BEMF and air-gap flux density was analyzed from electromagnetic aspect. With the increase of magnetic separation bridge width,flux leakage between adjacent poles increased,and both BEMF and air-gap flux density showed a downward trend. The experimental prototype was finally manufactured,the no-load test at rated speed has verified that error among maximum,root mean square and simulation values of line BEMF is less than 2%. At the same time,the motor rotor reliably operated at the highest speed,and result of touching between stator and rotor didn＇ t occur. It is proved that the value of magnetic separation bridge width is reasonable.

关 键 词：内置式永磁同步电机 结构 电磁 耦合 

分 类 号：TM313[电气工程—电机]