基于高频注入法的无轴承异步电机转子位移观测
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摘要
为了实现无轴承异步电机转子径向位移的自传感检测,研究了一种基于高频信号注入法的转子位移估算方法。基于转矩绕组和悬浮绕组之间的互感变化规律,通过在转矩绕组注入脉振高频电压信号,提取悬浮绕组中的高频感应电流信号,再经解调处理,估算出转子的径向位移信号,并据此设计了转子径向位移估算器。最后,进行了无轴承异步电机无位移传感器控制系统的仿真实验和分析。该系统的仿真实验结果表明:可以实现转子径向位移的可靠估算,能在无径向位移条件下实现无轴承异步电机的稳定悬浮运行控制。
In order to realize the self-sensing detection of rotor radial displacement of bearingless induction motor,a radial displacement estimation method based on high frequency signal injection method is studied in this paper. According to the mutual inductance variation between the torque winding and suspension winding,by injecting fluctuating high frequency voltage signal into torque winding,the induced high frequency current signal in suspension winding is detected,and the radial displacement signal of the rotor is estimated after demodulation,on this basis,the rotor radial displacement estimator is design. Finally,the system simulation verification and analysis of the displacement sensorless control system are made. The simulation results show that the high frequency signal injection method can effectively estimate the radial displacement of the rotor and can realize the motor steady suspension operation control without displacement sensor.
In order to realize the self-sensing detection of rotor radial displacement of bearingless induction motor,a radial displacement estimation method based on high frequency signal injection method is studied in this paper. According to the mutual inductance variation between the torque winding and suspension winding,by injecting fluctuating high frequency voltage signal into torque winding,the induced high frequency current signal in suspension winding is detected,and the radial displacement signal of the rotor is estimated after demodulation,on this basis,the rotor radial displacement estimator is design. Finally,the system simulation verification and analysis of the displacement sensorless control system are made. The simulation results show that the high frequency signal injection method can effectively estimate the radial displacement of the rotor and can realize the motor steady suspension operation control without displacement sensor.
引文
[1]李自愿,卜文绍,路春晓,等.无轴承异步电机转子径向位移自检测[J].电气传动,2016,46(4):87-90.Li Ziyuan,Bu Wenshao,Lu Chunxiao,et al.A Rotor Radial Displacement Self-sensing Method for Bearingless Induction Motors[J].Electric Drive,2016,46(4):87-90.
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[8]程兆刚,卢健康,曹昌平,等.一种无传感器磁悬浮轴承感应电动机转子位置检测方法研究[J].微电机,2008,41(5):90-93.Cheng Zhaogang,Lu Jiankang,Cao Changping,et al.Method and Research of Rotor Displacement detection of Bearingless and Sensorless Induction Motor[J].Micromotors,2008,41(5):90-93.
[9]Takeshi M Kenji A,Hannes B.Stability analysis of self-magnetic bearing controllers[J].IEEE Transactions on Control Systems Technology,1996,4(5):572-579.
[10]柏仓,黄守道,管晓文,等.无轴承永磁同步电机无位移传感器系统建模与仿真[J].电气传动,2009,39(9):60-63.Bai Cang,Huang Shoudao,Guan Xiaowen,et al.Modeling and Simulation of Control System for Bearingless Permanent Magnet-type Motors[J].Electric drive,2009,39(9):60-63.
[11]Bu W.S,Huang S.H,Wan S.M,et al.General analytical models of inductance matrices of four-pole bearingless motors with two-pole controlling windings[J].IEEE Transactions on Magnetics,2009,45(9):3316-3321.
[12]卜文绍,祖从林,路春晓.考虑电流动态的无轴承异步电机解耦控制策略[J].控制理论与应用,2014,31(11):1561-1567.Bu Wenshao,Zu Conglin,Lu Chunxiao.Decoupling control strategy of bearingless induction motor under the conditions of considering current dynamic characteristics[J].Control Theory&Applications,2014,31(11):1561-1567.
[2]Zhiying Zhu,Yu Kun Sun,Yonghong Huang,et al.Displacement Selfsensing of Bearingless Switched Reluctance Motors Based on LS-SVM[J].Przeglad Elektrotechniczny,2012,88:310-313.
[3]项倩雯,孙玉坤,嵇小辅,等.单绕组磁悬浮开关磁阻电机无径向位移传感器控制[J].电工技术学报,2013,28(8):259-267.Xiang Qianwen,Sun Yukun,Ji Xiaofu,et al.Radial Displacement Sensorless Control for Single-Winding Bearingless Switched Reluctance Motors[J].Transactions of China Electrotechnical Society,2013,28(8):259-267.
[4]Tera T,Yamauchi Y,Chiba A,et al.Performances of bearingless and sensorless induction motor drive based on mutual inductances and rotor displacements estimation[J].IEEE Transactions on Industrial Electronics,2006,53(1):187-194.
[5]Kuwajima T,Nobe T,Ebara K,et al.An estimation of the rotor displacements of bearingless motors based on a high frequency equivalent circuit[C]//International Conference on Power Electronics and Drive Systems,Indonesia,2001,pp.725-731.
[6]年珩,贺益康.永磁型无轴承电机无径向位移传感器运行研究[J].电工电能新技术,2006,25(4):15-18,62.Nian Heng,He Yikang.Radial displacement sensorless operation of PMtype bearingless motor[J].Advance technology of electrical engineering and energy,2006,25(4):15-18,62.
[7]Heng Nian,Yu Quan,Jiawen Li.Rotor Displacement Sensorless Control Strategy for PM Type Bearingless Motor Based on the Parameter Identification[C].International Conference on Electrical Machines and Systems,2009.pp.1-5.
[8]程兆刚,卢健康,曹昌平,等.一种无传感器磁悬浮轴承感应电动机转子位置检测方法研究[J].微电机,2008,41(5):90-93.Cheng Zhaogang,Lu Jiankang,Cao Changping,et al.Method and Research of Rotor Displacement detection of Bearingless and Sensorless Induction Motor[J].Micromotors,2008,41(5):90-93.
[9]Takeshi M Kenji A,Hannes B.Stability analysis of self-magnetic bearing controllers[J].IEEE Transactions on Control Systems Technology,1996,4(5):572-579.
[10]柏仓,黄守道,管晓文,等.无轴承永磁同步电机无位移传感器系统建模与仿真[J].电气传动,2009,39(9):60-63.Bai Cang,Huang Shoudao,Guan Xiaowen,et al.Modeling and Simulation of Control System for Bearingless Permanent Magnet-type Motors[J].Electric drive,2009,39(9):60-63.
[11]Bu W.S,Huang S.H,Wan S.M,et al.General analytical models of inductance matrices of four-pole bearingless motors with two-pole controlling windings[J].IEEE Transactions on Magnetics,2009,45(9):3316-3321.
[12]卜文绍,祖从林,路春晓.考虑电流动态的无轴承异步电机解耦控制策略[J].控制理论与应用,2014,31(11):1561-1567.Bu Wenshao,Zu Conglin,Lu Chunxiao.Decoupling control strategy of bearingless induction motor under the conditions of considering current dynamic characteristics[J].Control Theory&Applications,2014,31(11):1561-1567.