磁路饱和对无轴承永磁电动机悬浮力的影响  

Effect of Magnetic Saturation on Levitation Force in Bearingless Permanent Magnet Motors

作　　者：魏华[1] 黄嵩[1] 严欣平[1] 辛懋[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《微电机》2008年第9期10-12,共3页Micromotors

基　　金：重庆市教育委员会自然科学基金项目(KJ061403)

摘　　要：无轴承永磁电动机磁路饱和趋势较传统电机严重,对径向悬浮力有较大影响。运用有限元数值计算方法,对一台无轴承永磁电动机在不同磁路饱和状态下的径向悬浮力进行分析计算,得出径向悬浮力随悬浮绕组电流变化规律受磁路饱和的影响关系,其结论为描述无轴承永磁电动机非线性模型奠定了基础,对电机的优化设计和提高悬浮力控制精度有较好的指导意义。The problem of magnetic saturation in bearingless permanent magnet motor was more serious than traditional motors, accordingly more influence on radial levitation force. In this paper, the radial levitation force under different saturation state was calculated by FEM, which given the relationships be- tween radial levitation force and levitation winding current considering magnetic saturation. The conclusions laid a foundation for describing non-linear model of permanent magnet motor, and provided instruction to optimize design of motor and improve the precision of levitation force control.

关 键 词：无轴承 永磁电动机 悬浮力 磁路饱和 有限元分析 

分 类 号：TM351[电气工程—电机]