Full speed range permanent magnet synchronous motor control without mechanical sensors

This study presents a control method for permanent magnet (PM) motors based on a combination of a non-linear full-order observer and a signal injection scheme. Stable mechanical-sensorless operating range down to zero speed at full load is obtained using only voltage and current sensors. The signal injection scheme uses the asymmetry of the motor's d and q-axis inductances to estimate rotor position and speed. Such asymmetry is also taken into account in the motor model used to construct the observer to reduce current estimation error. The performance of the proposed scheme is validated through experimental results.

[1]  Carlos H. Muravchik,et al.  A nonlinear reduced order observer for permanent magnet synchronous motors , 1996, IEEE Trans. Ind. Electron..

[2]  Seung-Ki Sul,et al.  Comparison of PM Motor Structures and Sensorless Control Techniques for Zero-Speed Rotor Position Detection , 2006, IEEE Transactions on Power Electronics.

[3]  Jorge A. Solsona,et al.  Nonlinear control of a permanent magnet synchronous motor with disturbance torque estimation , 2000 .

[4]  Jung-Ik Ha,et al.  Analysis of permanent magnet machine for sensorless control based on high frequency signal injection , 2003 .

[5]  Silverio Bolognani,et al.  Extended Kalman filter tuning in sensorless PMSM drives , 2003 .

[6]  A. Piippo,et al.  Sensorless control of PMSM drives using a combination of voltage model and HF signal injection , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[7]  Jorma Luomi,et al.  Signal Injection in Sensorless PMSM Drives Equipped With Inverter Output Filter , 2008 .

[8]  J. Luomi,et al.  Flux observer enhanced with low-frequency signal injection allowing sensorless zero-frequency operation of induction motors , 2005, IEEE Transactions on Industry Applications.

[9]  Guillermo R. Bossio,et al.  Mechanical sensorless speed control of permanent-magnet AC motors driving an unknown load , 2006, IEEE Transactions on Industrial Electronics.

[10]  R. Krishnan,et al.  Electric Motor Drives: Modeling, Analysis, and Control , 2001 .

[11]  Paul P. Acarnley,et al.  Review of position-sensorless operation of brushless permanent-magnet machines , 2006, IEEE Transactions on Industrial Electronics.

[12]  R. D. Lorenz,et al.  Rotor position and velocity estimation for a salient-pole permanent magnet synchronous machine at standstill and high speeds , 1998 .

[13]  J. Holtz,et al.  Acquisition of Position Error and Magnet Polarity for Sensorless Control of PM Synchronous Machines , 2008, IEEE Transactions on Industry Applications.

[14]  Ouassima Akhrif,et al.  A nonlinear state observer for the sensorless control of a permanent-magnet AC machine , 2001, IEEE Trans. Ind. Electron..

[15]  Iqbal Husain,et al.  Four-quadrant pulse injection and sliding mode observer based sensorless operation of a switched reluctance machine over entire speed range including zero speed , 2005 .

[16]  Mehrdad Ehsani,et al.  Position sensorless brushless DC motor/generator drives: review and future trends , 2007 .

[17]  Mark Sumner,et al.  Hybrid rotor position observer for wide speed-range sensorless PM motor drives including zero speed , 2006, IEEE Transactions on Industrial Electronics.

[18]  Nesimi Ertugrul,et al.  A new algorithm for sensorless operation of permanent magnet motors , 1992, Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting.

[19]  Marko Hinkkanen,et al.  Analysis of an Adaptive Observer for Sensorless Control of Interior Permanent Magnet Synchronous Motors , 2008, IEEE Transactions on Industrial Electronics.

[20]  E. Robeischl,et al.  Optimized INFORM measurement sequence for sensorless PM synchronous motor drives with respect to minimum current distortion , 2002, IEEE Transactions on Industry Applications.

[21]  Jianguo Zhu,et al.  Initial rotor position estimation and sensorless direct torque control of surface-mounted permanent magnet synchronous motors considering saturation saliency , 2008 .

[22]  R.D. Lorenz,et al.  Initial rotor position estimation of an interior permanent-magnet synchronous machine using carrier-frequency injection methods , 2005, IEEE Transactions on Industry Applications.

[23]  T.A. Lipo,et al.  High frequency modeling for cable and induction motor overvoltage studies in long cable drives , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[24]  F. Blaabjerg,et al.  Combined Flux Observer With Signal Injection Enhancement for Wide Speed Range Sensorless Direct Torque Control of IPMSM Drives , 2008, IEEE Transactions on Energy Conversion.

[25]  Toshihiko Noguchi,et al.  Mechanical-sensorless permanent-magnet motor drive using relative phase information of harmonic currents caused by frequency-modulated three-phase PWM carriers , 2003 .

[26]  Siu Lau Ho,et al.  Sensorless permanent-magnet synchronous motor drive using a reduced-order rotor flux observer , 2008 .

[27]  R.D. Lorenz,et al.  Robust Magnet Polarity Estimation for Initialization of PM Synchronous Machines With Near-Zero Saliency , 2006, IEEE Transactions on Industry Applications.

[28]  Ralph Kennel,et al.  Sensorless speed and position control of synchronous machines using alternating carrier injection , 2003, IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03..

[29]  A. Piippo,et al.  Adaptive observer combined with HF signal injection for sensorless control of PMSM drives , 2005, IEEE International Conference on Electric Machines and Drives, 2005..