|
|
|
| Extended Kalman Filter for ?-1-Type Model of Induction Motor |
| Li Zhefeng, Sun Danan, Diao Lijun, Lin Wenli, Liu Zhigang |
| Beijing Jiaotong University Beijing 100044 China |
|
|
|
|
Abstract Most analysis of induction motor drives employs the conventional T-type equivalent circuit. This model is actually as complicated as unnecessary for analysis in the linear system. Moreover, it is inadequate for use when parameters varied. ?-1 -type model is simple and particularly appropriate for analysis of vector control of induction motors. Extended Kalman filter (EKF) based on ?-1 model is studied and implemented in vector control system. The influence of motor parameter changes is treated as the state noises of EKF and this improves the precision for vector control. Open-loop speed estimator has not only simpler structure but also reduces the computational cost of EKF. The speed estimator has a low-pass filter to suppress the noise generated by the pure differentiator in order to satisfy both dynamic and steady state requirements. The experimental results based on DSP demonstrate the satisfied steady performances in wide range of speed control.
|
|
Received: 30 June 2008
Published: 14 February 2014
|
|
|
|
|
|
[1] Bimal K Bose. Modern power electronic and AC drives[M]. Upper Saddle River, NJ: Prentice Hall, 2002.
[2] Gordon R Slemon. Modelling of induction machines for electric drives[J]. IEEE Trans. on Industry Applications, 1989, 25(6): 1126-1131.
[3] 胡崇岳. 现代交流调速技术[M]. 北京: 机械工业出版社, 2003.
[4] 汤蕴缪, 史乃. 电机学[M]. 2版. 北京: 机械工业出版社, 2005.
[5] 姚玮, 施文济. 异步电机的三种动态等效电路 [J]. 电机与控制应用, 2006, 33(7): 21-24.
[6] Du T, Vas P, Stronach A F, et al. Application of Kalman filters and extended Luenberger observers in induction motor drives[C]. Intelligent Motion Proceedings, 1994.
[7] Wang Yaonan, Lu Jiantao, Huang Shoudao. Speed sensorless vector control of induction motor based on the MRAS theory[C]. IPEMC, 2004, 2: 645-648.
[8] 刁利军, 刘志刚, 郝荣泰, 等. 能量回馈式PWM整流器并网的工程设计方法[J]. 电工技术学报, 2005, 20(11): 75-79. |
|
|
|
2009, Vol. 24 
