MTPA and Field Weakening Control of Synchronous Reluctance motor

An improved algorithm for MTPA (Maximum Torque Per Ampere) and Field Weakening operation which is suitable for implementation with Field Oriented Control, has been proposed for the Synchronous Reluctance motor (SynRel) for high dynamic performance. The proposed method overcomes the problem of excessive current flow into the machine while generating the d-axis and q-axis current commands independently. At the same time to operate the inverter in the linear modulation region (0≤m≤1) to minimize the output torque ripple. The proposed method helps to attain MTPA operation below the base speed to operate with the rated load and a fast speed response in Field Weakening mode. The validity and efficacy of the proposed algorithm is verified by simulation in MATLAB and SIMULINK.

[1]  T. S. Radwan,et al.  A maximum torque per ampere vector control strategy for synchronous reluctance motors considering saturation and iron losses , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[2]  Timothy J. E. Miller,et al.  Maximising the saliency ratio of the synchronous reluctance motor , 1993 .

[3]  R.E. Betz,et al.  Maximum torque control of a sensorless synchronous reluctance motor drive , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[4]  David G. Dorrell,et al.  Automotive Electric Propulsion Systems With Reduced or No Permanent Magnets: An Overview , 2014, IEEE Transactions on Industrial Electronics.

[5]  Pragasen Pillay,et al.  A Sizing Methodology of the Synchronous Reluctance Motor for Traction Applications , 2014, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[6]  Seung-Ki Sul,et al.  Novel Flux-Weakening Control of an IPMSM for Quasi-Six-Step Operation , 2008, IEEE Transactions on Industry Applications.

[7]  Thomas M. Jahns,et al.  Flux-Weakening Regime Operation of an Interior Permanent-Magnet Synchronous Motor Drive , 1987, IEEE Transactions on Industry Applications.

[8]  Jung Hwan Ahn,et al.  Field weakening control of synchronous reluctance motor for electric power steering , 2007 .

[9]  Y Inoue,et al.  A novel control scheme for maximum power operation of synchronous reluctance motors including maximum torque per flux control , 2009, 2009 International Conference on Electrical Machines and Systems.

[10]  Seung-Ki Sul,et al.  Highly dynamic torque control of synchronous reluctance motor , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[11]  Ion Boldea,et al.  Sensorless control of the synchronous reluctance motor , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.