摘要：无轴承异步电机转子磁场定向控制的关键问题在于精确地估计转子磁链。针对传统模型转子磁链估计精度受到定转子电阻变化影响的问题，在定子电流矢量定向的基础上提出了一种新型的转子磁链估计器。该转子磁链估计算法不含定转子电阻，因而可以避免定转子电阻参数变化对磁链估计精度的影响。通过Matlab/Simulink对估计器进行了系统仿真分析，仿真结果表明了所给转子磁链估计器算法的有效性。
关键词：无轴承异步电机；转子磁链；传统模型；定子电流矢量定向 

Abstract: The key problem of rotor field oriented control of bearingless induction motor was to estimate the rotor flux accurately. Aiming at the problem that the accuracy of traditional flux estimation was impacted by the variation of stator or rotor resistance.A new rotor flux estimation based on the stator current vector orientation was proposed, which contained neither stator nor rotor resistance. Therefore, the influences on flux estimation accuracy, caused by resistance parameter variation, and were avoided. And the author did system simulation and analysis by Matlab/Simulink in this paper. Results show the effectiveness of algorithm of the new rotor flux estimation.
Key words: bearingless induction motor; rotor flux; traditional model; stator current vector orientation