Discrete-time observer design for sensorless synchronous motor drives

This paper deals with the speed and position estimation of interior permanent-magnet synchronous motor (IPMSM) and synchronous reluctance motor (SyRM) drives. A speed-adaptive full-order observer is designed and analyzed in the discrete-time domain. The observer design is based on the exact discrete-time motor model, which inherently takes the delays in the control system into account. The proposed observer is experimentally evaluated using a 6.7-kW SyRM drive. The analysis and experimental results indicate that drastic performance improvements can be obtained with the direct discrete-time design, especially if the sampling frequency is relatively low compared to the fundamental frequency.

[1]  Robert D. Lorenz,et al.  High-Frequency Injection-Based Stator Flux Linkage and Torque Estimation for DB-DTFC Implementation on IPMSMs Considering Cross-Saturation Effects , 2014 .

[2]  Tian-Hua Liu,et al.  Design and Implementation of an Online Tuning Adaptive Controller for Synchronous Reluctance Motor Drives , 2013, IEEE Transactions on Industrial Electronics.

[3]  Toni Tuovinen,et al.  Adaptive full-order observer with high-frequency signal injection for synchronous reluctance motor drives , 2014, 2013 International Electric Machines & Drives Conference.

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

[5]  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.

[6]  F. Blaabjerg,et al.  I-f starting and active flux based sensorless vector control of reluctance synchronous motors, with experiments , 2010, 2010 12th International Conference on Optimization of Electrical and Electronic Equipment.

[7]  Shinji Doki,et al.  Position and velocity sensorless control of synchronous reluctance motor at low speed using disturbance observer for high-frequency extended EMF , 2011, IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society.

[8]  Tsuyoshi Hanamoto,et al.  Wide-Speed-Range Sensorless Vector Control of Synchronous Reluctance Motors Based on Extended Programmable Cascaded Low-Pass Filters , 2011, IEEE Transactions on Industrial Electronics.

[9]  Joachim Böcker,et al.  Discrete-time design of adaptive current controller for interior permanent magnet synchronous motors (IPMSM) with high magnetic saturation , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[10]  A. Testa,et al.  Sensorless Rotor Position Estimation in Synchronous Reluctance Motors Exploiting a Flux Deviation Approach , 2007, IEEE Transactions on Industry Applications.

[11]  Oskar Wallmark,et al.  An improved speed and position estimator for salient permanent-magnet synchronous motors , 2005, IEEE Transactions on Industrial Electronics.

[12]  Ralph M. Kennel,et al.  Position sensorless control of PMSM by synchronous injection and demodulation of alternating carrier voltage , 2010, 2010 First Symposium on Sensorless Control for Electrical Drives.

[13]  Gianmario Pellegrino,et al.  Performance Comparison Between Surface-Mounted and Interior PM Motor Drives for Electric Vehicle Application , 2012, IEEE Transactions on Industrial Electronics.

[14]  Michele Pastorelli,et al.  Flux-observer-based high-performance control of synchronous reluctance motors by including cross saturation , 1999 .

[15]  F. Blaabjerg,et al.  High frequency injection assisted “active flux” based sensorless vector control of reluctance synchronous motors, with experiments from zero speed , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[16]  Joachim Bocker,et al.  On the control bandwidth of servo drives , 2009, 2009 13th European Conference on Power Electronics and Applications.

[17]  Mario Pacas,et al.  Encoderless Predictive Direct Torque Control for Synchronous Reluctance Machines at Very Low and Zero Speed , 2008, IEEE Transactions on Industrial Electronics.

[18]  A. Piippo,et al.  Torque Ripple Reduction in Sensorless PMSM Drives , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[19]  R. Kennel,et al.  Fundamental saliency based encoderless control for reluctance synchronous machines , 2010, The XIX International Conference on Electrical Machines - ICEM 2010.

[20]  Joachim Bocker,et al.  Optimum Control for Interior Permanent Magnet Synchronous Motors (IPMSM) in Constant Torque and Flux Weakening Range , 2006, 2006 12th International Power Electronics and Motion Control Conference.

[21]  Robert D. Lorenz,et al.  Deadbeat-Direct Torque and Flux Control of Interior Permanent Magnet Synchronous Machines With Discrete Time Stator Current and Stator Flux Linkage Observer , 2011, IEEE Transactions on Industry Applications.

[22]  Joachim Böcker,et al.  Control Realization for an Interior Permanent Magnet Synchronous Motor ( IPMSM ) in Automotive Drive Trains , 2011 .

[23]  Friedrich W. Fuchs,et al.  Models and effects of different updating and sampling concepts to the control of grid-connected PWM converters — A study based on discrete time domain analysis , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[24]  A. Piippo,et al.  Adaptation of Motor Parameters in Sensorless PMSM Drives , 2007, IEEE Transactions on Industry Applications.

[25]  Toni Tuovinen,et al.  Current control for IPMSM drives: Direct discrete-time pole-placement design , 2015, 2015 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD).

[26]  S. Sangwongwanich,et al.  Sensorless control of interior permanent-magnet synchronous motors based on a fictitious permanent-magnet flux model , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[27]  Seth R. Sanders,et al.  Stator-flux-oriented vector control of synchronous reluctance Machines with maximized efficiency , 2004, IEEE Transactions on Industrial Electronics.

[28]  Robert D. Lorenz,et al.  Discrete-time current regulator design for AC machine drives , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[29]  Jung-Ik Ha,et al.  Position controlled synchronous reluctance motor without rotational transducer , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[30]  Toni Tuovinen,et al.  Current Control for Synchronous Motor Drives: Direct Discrete-Time Pole-Placement Design , 2016, IEEE Transactions on Industry Applications.

[31]  Paolo Guglielmi,et al.  Position-sensorless control of the transverse-laminated synchronous reluctance motor , 2001 .

[32]  R.D. Lorenz,et al.  Discrete-Time Domain Modeling and Design for AC Machine Current Regulation , 2007, 2007 IEEE Industry Applications Annual Meeting.

[33]  M. Hinkkanen,et al.  Inclusion of magnetic saturation in dynamic models of synchronous reluctance motors , 2012, 2012 XXth International Conference on Electrical Machines.