无轴承电机的一般化互感模型  

General model for mutual-inductance of a bearingless motor

作　　者：卜文绍[1,2] 黄声华[2] 万山明[2] 吴芳[2] 

机构地区：[1]河南科学大学电子信息工程学院,河南洛阳471003 [2]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2009年第2期100-103,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：河南省重点科技攻关计划资助项目(082102240086);湖北省自然科学基金资助项目(2005ABA301)

摘　　要：通过解析无轴承电机的气隙磁通分布规律,基于磁链和绕组电感之间的关系,推导出二极悬浮控制四极无轴承电机的一般化互感参数解算模型.该模型既可适用于具有凸极型转子结构的无轴承电机,又可适用于具有圆柱型转子结构的无轴承电机,并针对无轴承异步电机进行了模型参数的实验验证.结果表明:在径向位移的一定范围内,互感随径向位移线性变化,测量值与计算值相差8%左右;在转子有限偏心的情况下,实验曲线的线性变化趋势以及和计算值的较好趋近性从一定程度上证明了互感参数模型的正确性和有效性.By means of analyzing the magnetic field distributing principle of bearingless motor, and based on the relationship between magnetic flux and windings inductance parameters, the general cal culating model of mutual-inductance parameters of four-pole bearingless motor with two-pole suspension system was derived. The general model on mutual inductance can not only be applicable to bearingless motors with salient-pole rotor, but also be applicable to beaingless motor with cylindrical rotor. Aiming at the bearingless induction motor, parameter experiment was made, and the experimental results have shown that the mutual-inductance varies linearly with the radial offsets within limited radial eccentricity of rotor, the error between measured value and calculating value is around 8 %. The reasons caused the error were analysed also. Within limited radial eccentricity of rotor, the linear experimental curve and its adjacency with the calculating value have validated the validity of the model.

关 键 词：无轴承电机 气隙磁场 互感参数 一般化模型 坐标变换 

分 类 号：TM343[电气工程—电机]