Robustness Improvement of Speed Estimation in Speed-Sensorless Induction Motor Drives

In the traditional adaptive full-order observer (AFO) for speed-sensorless induction motor drives, the estimated rotor flux error is neglected in the speed estimation algorithm. In this paper, the estimated rotor flux error and an error coefficient are adopted in the speed estimation algorithm to improve the robustness of speed estimation. Based on the proposed speed estimation algorithm, the design of AFO is divided into two types: 1) designing the error coefficient with existed feedback gains for the stability of speed estimation and 2) designing feedback gains with constant error coefficient for the stability of speed estimation. With both proposed methods, the estimated rotor speed error caused by motor parameter deviation can be reduced especially at low-speed regenerating range. The feasibility of proposed methods is verified by experiments.

[1]  Marko Hinkkanen,et al.  Reduced-order flux observers with stator-resistance adaptation for speed-sensorless induction motor drives , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[2]  Francesco Alonge,et al.  Sensorless Control of Induction-Motor Drive Based on Robust Kalman Filter and Adaptive Speed Estimation , 2014, IEEE Transactions on Industrial Electronics.

[3]  Bin Chen,et al.  Online Updating of Rotor Time Constant Based on Combined Voltage and Current Mode Flux Observer for Speed-Sensorless AC Drives , 2014, IEEE Transactions on Industrial Electronics.

[4]  Surapong Suwankawin,et al.  A speed-sensorless IM drive with decoupling control and stability analysis of speed estimation , 2002, IEEE Trans. Ind. Electron..

[5]  Surapong Suwankawin,et al.  Design strategy of an adaptive full-order observer for speed-sensorless induction-motor Drives-tracking performance and stabilization , 2006, IEEE Transactions on Industrial Electronics.

[6]  Shinji Doki,et al.  New approach for stability improvement of speed-sensorless induction-motor controls at zero frequency using multirate adaptive observer , 2006 .

[7]  He Liu,et al.  Second-Order Sliding-Mode Observer With Online Parameter Identification for Sensorless Induction Motor Drives , 2014, IEEE Transactions on Industrial Electronics.

[8]  Kouki Matsuse,et al.  Regenerating-mode low-speed operation of sensorless induction motor drive with adaptive observer , 2002 .

[9]  S. A. Davari,et al.  Using Full Order and Reduced Order Observers for Robust Sensorless Predictive Torque Control of Induction Motors , 2012, IEEE Transactions on Power Electronics.

[10]  H. Kubota,et al.  DSP-based speed adaptive flux observer of induction motor , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[11]  Jan Melkebeek,et al.  Speed sensorless direct torque control of induction motors using an adaptive flux observer , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[12]  T. Sutikno,et al.  An Improved FPGA Implementation of Direct Torque Control for Induction Machines , 2013, IEEE Transactions on Industrial Informatics.

[13]  Jing Liu,et al.  Research on Anti-Error Performance of Speed and Flux Estimator for Induction Motor Using Robust Reduced-Order EKF , 2013, IEEE Transactions on Industrial Informatics.

[14]  Somboon Sangwongwanich,et al.  Stability and Dynamic Performance Improvement of Adaptive Full-Order Observers for Sensorless PMSM Drive , 2012, IEEE Transactions on Power Electronics.

[15]  Gianpaolo Vitale,et al.  Neural Sensorless Control of Linear Induction Motors by a Full-Order Luenberger Observer Considering the End Effects , 2014, IEEE Transactions on Industry Applications.

[16]  Yoichi Hori,et al.  Model Reference Adaptive Controller-Based Rotor Resistance and Speed Estimation Techniques for Vector Controlled Induction Motor Drive Utilizing Reactive Power , 2008, IEEE Transactions on Industrial Electronics.

[17]  Toni Tuovinen,et al.  Adaptive Full-Order Observer With High-Frequency Signal Injection for Synchronous Reluctance Motor Drives , 2014, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[18]  B. Jeftenic,et al.  Speed-sensorless control of induction motor based on reactive power with rotor time constant identification , 2010 .

[19]  Murat Barut,et al.  Speed-Sensorless Estimation for Induction Motors Using Extended Kalman Filters , 2007, IEEE Transactions on Industrial Electronics.

[20]  Yuan Ren,et al.  Direct Torque Control of Permanent-Magnet Synchronous Machine Drives With a Simple Duty Ratio Regulator , 2014, IEEE Transactions on Industrial Electronics.

[21]  Mark Sumner,et al.  Comparative analysis of experimental performance and stability of sensorless induction motor drives , 2006, IEEE Transactions on Industrial Electronics.

[22]  Sensorless Sliding-Mode Rotor Speed Observer of Induction Machines Based on Magnetizing Current Estimation , 2014, IEEE Transactions on Industrial Electronics.

[23]  R. D. Lorenz,et al.  Dynamic loss minimization using improved deadbeat-direct torque and flux control for interior permanent magnet synchronous machines , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[24]  Ivo Herman,et al.  AC Drive Observability Analysis , 2013, IEEE Transactions on Industrial Electronics.

[25]  Veli-Matti Leppänen,et al.  Speed-sensorless induction Machine control for zero speed and frequency , 2004, IEEE Transactions on Industrial Electronics.

[26]  Wang Gaolin,et al.  A novel design method for adaptive full order observer feedback matrix and speed estimation algorithm , 2014, 2014 IEEE Industry Application Society Annual Meeting.

[27]  L. Harnefors,et al.  Comparison of a Reduced-Order Observer and a Full-Order Observer for Sensorless Synchronous Motor Drives , 2012, IEEE Transactions on Industry Applications.

[28]  Jung-Ik Ha,et al.  A hybrid speed estimator of flux observer for induction motor drives , 2006, IEEE Transactions on Industrial Electronics.

[29]  J. Luomi,et al.  Parameter sensitivity of full-order flux observers for induction motors , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[30]  Joachim Holtz,et al.  Sensorless Control of Induction Machines - With or Without Signal Injection? , 2006, IEEE Trans. Ind. Electron..