基于高频注入法的无轴承同步磁阻电动机径向位移自检测技术  

Radial Displacement Self-Test Technology Based on High Frequency Signal Injection for Bearingless Synchronous Reluctance Motor

作　　者：周令康[1] 冯冬梅[1] 刁小燕[1] 朱熀秋[1] 

机构地区：[1]江苏大学,江苏镇江212013

出　　处：《微特电机》2013年第2期17-20,共4页Small & Special Electrical Machines

基　　金：国家自然科学基金(60974053);教育部高校博士点基金(20093227110002);江苏省研究生科研创新计划资助项目(CXLX12-0649);江苏高校优势学科建设工程资助项目(苏政办发[2011]6号)

摘　　要：为减少无轴承同步磁阻电动机的传感器成本,提高其实用性,提出了一种基于高频注入法的无径向位移自检测方法。通过在无轴承同步磁阻电动机转矩绕组中注入脉动高频电压信号,利用电机空间凸极效应及其转矩绕组和悬浮力绕组之间的互感,实现对转子径向位移的有效预测。采用MATLAB仿真软件构建了仿真系统,仿真试验表明该自检测方法能实现对无轴承同步磁阻电动机转子径向位移准确预测,并能实现无传感器方式的稳定悬浮运行。To reduce sensor cost of a bearingless synchronous reluctance motor and improve its practicability, a scheme using fluctuating high frequency voltage signal injection to estimate rotor radial displacement was suggested. The method was based on bearingless motor space-saliency effect and torque windings and suspension force windings~ mutual inductance, the rotor radial displacement was observed simultaneously by injecting fluctuating high frequency voltage signal into torque windings. The simulation system of radial displacement self-test of the bearingless synchronous reluctance motor was set up by using MATLAB, and the simulation test was carried out. The simulation results demonstrates that proposed method is ca- pable of precisely estimating rotor radial displacement and can achieve stable sensorless suspension operation.

关 键 词：无轴承同步磁阻电动机 脉动高频电压信号 位移自检测 空间凸极效应 

分 类 号：TM352[电气工程—电机]