无轴承永磁同步电机转子悬浮原理与解耦控制  

Suspension principle of rotor and decoupling control for bearingless permanent magnet-type synchronous motors

作　　者：朱熀秋[1] 巫亮[1] 李同华[1] 孙玉坤[1] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《东南大学学报（自然科学版）》2005年第A02期34-38,共5页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50275067);江苏省高技术研究资助项目(BG2005027);江苏大学高级人才启动基金资助项目

摘　　要：在介绍无轴承永磁同步电机径向悬浮力产生原理基础上，分析和推导了径向悬浮力和径向悬浮力绕组中电流及永磁体等效电流之间的关系，采用转子磁场定向控制策略对无轴承永磁同步电机径向悬浮力进行解耦控制，并在电机不同负载情况下设计了数字控制系统．采用TMS320LF2d07 DSP研制了数字控制控制系统硬件，并开发软件．实验结果表明，电机空载运行在3000r／min时，转子径向位移振动幅值小于100μm，电机在0～3000r／min时，能够实现转子快速稳定悬浮和运转．Based on the principle of producing radial suspension forces, the relationship between radial suspension forces, currents in radial suspension windings and equivalent current of permanent magnet is analyzed and deduced. The decoupling algorithm of the radial suspension forces using rotor flux orientation control is proposed, and the digital control systems under different loads are designed. The hardware and software of digital control system using TMS320LF2407 DSP were developed. The experiment results show that the vibration amplitude of radial displacements is less than 100μm when the speed of the motor is 3000 r/min, and the bearingless motor can realize suspension and running steadily within the range of 0 - 3000 r/min.

关 键 词：无轴承永磁同步电机 径向悬浮力 解耦控制 数字控制 

分 类 号：TM341[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]