感应电机滑模磁链观测器的直接转矩控制研究
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摘要
交流感应电机磁链观测是决定电机传动系统性能的关键,针对传统电机磁链观测精度易受电机参数变化等因素的影响,提出了一种基于新型滑模变结构定子磁链观测方法,与传统滑模磁链观测器不同,该观测器仅在定子坐标系下通过滑模函数驱使观测电流跟随实际电流,实现对定子磁链的观测。同时,该方法间接实现了对转子速度及磁链的估计,使磁链观测过程不依赖于实际转子速度分量,对转子位置具有完全鲁棒性。理论分析和实验结果证明了该方法能在全速范围内实现精确观测定子磁链估计,具有控制精度高、鲁棒性强、动态响应快等特点。
The flux estimation of the induction machine determines the performance of the drive system. The parameters of induction motors are prone to easy impaction with the aid of the conventional flux estimation. A new stator flux estimation is presented, which realizes accurately in the stationary frame of axes by the sliding-mode function. At the same time, the observer of the model contains a rotor-speed-independent term behavior, and estimates the rotor flux and the exact speed of the rotor indirectly. Theoretical analysis and MATALIB simulation results confirm the robustness, accuracy, quick response of the drive.
The flux estimation of the induction machine determines the performance of the drive system. The parameters of induction motors are prone to easy impaction with the aid of the conventional flux estimation. A new stator flux estimation is presented, which realizes accurately in the stationary frame of axes by the sliding-mode function. At the same time, the observer of the model contains a rotor-speed-independent term behavior, and estimates the rotor flux and the exact speed of the rotor indirectly. Theoretical analysis and MATALIB simulation results confirm the robustness, accuracy, quick response of the drive.
引文
[1] V.Utkin, J.Guldner, and J.Shi, Sliding Mode Control in Electromechanical Systems[M]. New York:Taylor&Francis,1999.
[2]路强,沈传文,季晓隆,等.一种用于感应电机控制的新型滑模速度观测器研究[J].中国电机工程学报,2006,26(18):164-168.Lu Q, Shen C W, Ji X L, et al. Novel Sliding-mode Observer for Speed Senseless Induction Motors[J].Proc of the CSEE, 2006,26(18):164-168.
[3] Cristian Lascu, Ion Boldea, Frede Blaabjerg. Very-Low-Speed Variable-Structure Control of Sensorless Induction Machine Drives Without Signal Injection[J].IEEE Trans. Ind. Electron,2005,41(2):591-598.
[4] Z. Yan, C. Jin, and V. I. Utkin. Sensorless sliding-mode control of induction motors[J] IEEE Trans. Ind. Electron. 2000.47(6):1286-1297.
[5] C.Lascu, I.Boldea, F.Blaabjerg. A modified direct torque control for induction motor sensorless drive[J].IEEE Trans.Ind. 2000.36(1):122-130.
[6]王成元,夏加宽,杨俊友,等.电机现代控制技术[M].北京:机械工业出版者,2006.Wang C Y, Xia J K, Yang J Y, et al. Modern electrical machine control technology[M]. Beijing:Mechanical Industrial Publishing House, 2006.
[7]王礼鹏,张化光,等.基于扩张状态观测器的SPMSM调速系统的滑模变结构反步控制[J].控制与决策,2011,26(4):553-557.Wang L P, Zhang H G, et al. Adaptive back stepping control of permanent magnet synchronous motors with parameter uncertainties[J]. Control and Decision, 2011, 26(4):553-557.
[8]张细政,王耀南.基于滑模观测器的永磁同步电机变结构鲁棒控制[J].控制与决策,2009, 24(1):157-160.Zhang X Z, Wang Y N. Robust variable structure control of PMSM based on sliding mode observer[J]. Control and Decision, 2009,24(1):157-160.
[2]路强,沈传文,季晓隆,等.一种用于感应电机控制的新型滑模速度观测器研究[J].中国电机工程学报,2006,26(18):164-168.Lu Q, Shen C W, Ji X L, et al. Novel Sliding-mode Observer for Speed Senseless Induction Motors[J].Proc of the CSEE, 2006,26(18):164-168.
[3] Cristian Lascu, Ion Boldea, Frede Blaabjerg. Very-Low-Speed Variable-Structure Control of Sensorless Induction Machine Drives Without Signal Injection[J].IEEE Trans. Ind. Electron,2005,41(2):591-598.
[4] Z. Yan, C. Jin, and V. I. Utkin. Sensorless sliding-mode control of induction motors[J] IEEE Trans. Ind. Electron. 2000.47(6):1286-1297.
[5] C.Lascu, I.Boldea, F.Blaabjerg. A modified direct torque control for induction motor sensorless drive[J].IEEE Trans.Ind. 2000.36(1):122-130.
[6]王成元,夏加宽,杨俊友,等.电机现代控制技术[M].北京:机械工业出版者,2006.Wang C Y, Xia J K, Yang J Y, et al. Modern electrical machine control technology[M]. Beijing:Mechanical Industrial Publishing House, 2006.
[7]王礼鹏,张化光,等.基于扩张状态观测器的SPMSM调速系统的滑模变结构反步控制[J].控制与决策,2011,26(4):553-557.Wang L P, Zhang H G, et al. Adaptive back stepping control of permanent magnet synchronous motors with parameter uncertainties[J]. Control and Decision, 2011, 26(4):553-557.
[8]张细政,王耀南.基于滑模观测器的永磁同步电机变结构鲁棒控制[J].控制与决策,2009, 24(1):157-160.Zhang X Z, Wang Y N. Robust variable structure control of PMSM based on sliding mode observer[J]. Control and Decision, 2009,24(1):157-160.