Cross saturation effects in IPM motors and related impact on zero-speed sensorless control

Permanent magnet synchronous reluctance motors (PMASR) are well suited to zero-speed sensorless control, because of their inherently salient behavior. However, the cross-saturation effect can lead to large errors on the position estimate, which is based on the differential anisotropy. These errors are quantified in the paper, as a function of the working point. The so calculated errors are then found in good accordance with the purposely obtained experimental measurements.

[1]  Paolo Guglielmi,et al.  Position sensorless control of transverse-laminated synchronous reluctance motors , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[2]  Robert D. Lorenz,et al.  Position estimation in induction machines utilizing rotor bar slot harmonics and carrier-frequency signal injection , 2000 .

[3]  J. Holtz.  State of the art of controlled AC drives without speed sensor , 1995, Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95.

[4]  Kaushik Rajashekara,et al.  Sensorless control of AC motor drives : speed and position sensorless operation , 1996 .

[5]  Alfio Consoli,et al.  Sensorless field oriented control using common mode currents , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[6]  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).

[7]  Robert D. Lorenz.  Practical issues and research opportunities when implementing zero speed sensorless control , 2001, ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501).

[8]  G. Franceschini,et al.  Cross-saturation in synchronous reluctance motors of the transverse-laminated type , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[9]  G. Franceschini,et al.  Design of low-torque-ripple synchronous reluctance motors , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[10]  Joachim Holtz,et al.  Sensorless control of induction motor drives , 2002, Proc. IEEE.

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

[12]  G. Pellegrino,et al.  Position-sensorless control of permanent-magnet-assisted synchronous reluctance motor , 2004, IEEE Transactions on Industry Applications.

[13]  Thomas A. Lipo,et al.  Flux Tracking Methods for Direct Field Orientation , 1999 .

[14]  M. Schroedl,et al.  Sensorless control of reluctance machines at arbitrary operating conditions including standstill , 1994 .

[15]  M. Schroedl,et al.  Sensorless control of AC machines at low speed and standstill based on the "INFORM" method , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[16]  Robert D. Lorenz,et al.  Transducerless position and velocity estimation in induction and salient AC machines , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

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

[18]  A. Vandenput,et al.  Sensorless direct field orientation at zero flux frequency , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[19]  Michele Pastorelli,et al.  High performance control of synchronous reluctance motor , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[20]  Peter Vas,et al.  Sensorless vector and direct torque control , 1998 .

[21]  A. Consoli,et al.  Low and zero speed sensorless control of synchronous reluctance motors , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[22]  Maurizio Repetto,et al.  Design refinement of synchronous reluctance motors through finite-element analysis , 2000 .

[23]  Joachim Holtz.  Sensorless position control of induction motors-an emerging technology , 1998, IEEE Trans. Ind. Electron..

[24]  Hirofumi Akagi,et al.  Implementation and position control performance of a position-sensorless IPM motor drive system based on magnetic saliency , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.