A new technique for multi-dimensional performance optimization of switched reluctance motors for vehicle propulsion

This paper presents a new and simple search technique to determine the optimum control parameters, such as turn-on and turn-off angles, current set level, etc., of a switched reluctance motor drive. Thanks to this new technique, several drive performance quantities such as efficiencies, torque ripple, energy consumption, torque per ampere, etc., can be optimized simultaneously over the entire torque- or power-speed operation range of the drive. In prior art work, these performance quantities were sequentially optimized, one at a time. This despite reported evidence that improving one performance quantity, such as efficiency, can have a negative impact on others, such as torque ripple. The technique was successfully used off-line to determine the optimum firing angles for achieving highest drive efficiency with lower torque ripple in a 102-kW SRM drive intended for electric vehicle propulsion. The performance prediction and test results are found in good correlation.

[1]  P. J. Lawrenson,et al.  Switched reluctance motor drives for rail traction: a second view , 1984 .

[2]  P. Tandon,et al.  Self-tuning control of a switched reluctance motor drive with shaft position sensor , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[3]  M. Abdulkadir,et al.  Maximum efficiency operation of switched reluctance motor by controlling switching angles , 1997, Proceedings of Second International Conference on Power Electronics and Drive Systems.

[4]  J. Corda,et al.  Computation and experimental determination of running torque waveforms in switched-reluctance motors , 1993 .

[5]  L. Venkatesha,et al.  A comparative study of pre-computed current methods for torque ripple minimisation in switched reluctance motor , 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]  Hiroyuki Yamai,et al.  Optimal switched reluctance motor drive for hydraulic pump unit , 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).

[7]  Yoichi Hayashi,et al.  A new approach to calculating core losses in the SRM , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[8]  J. Lindsay,et al.  Magnetic field analysis of a switched reluctance motor using a two dimensional finite element model , 1985 .

[9]  Mary Tolikas,et al.  Dual-energy electromagnetic modeling, with application to variable reluctance motor analysis , 1995 .

[10]  P.St.-J.R. French.  Switched reluctance motor drives for rail traction: relative assessment , 1984 .

[11]  Henrik Stendahl.  Speed Control of a Switched Reluctance Motor , 1996 .

[12]  F. Blaabjerg,et al.  A new energy optimizing control strategy for switched reluctance motors , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[13]  D. G. Taylor,et al.  Piecewise modeling and optimal commutation of switched reluctance motors , 1995, 1995 Proceedings of the IEEE International Symposium on Industrial Electronics.

[14]  I. Husain,et al.  Torque ripple minimization in switched reluctance machines over a wide speed range , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[15]  Calum Cossar,et al.  Optimal commutation angles for current controlled switched reluctance motors , 1996 .

[16]  R. Orthmann,et al.  Turn-off angle control of switched reluctance motors for optimum torque output , 2002 .

[17]  Timothy J. E. Miller,et al.  Switched Reluctance Motors and Their Control , 1993 .

[18]  Howard C. Lovatt,et al.  Computer-optimised current waveforms for switched-reluctance motors , 1994 .

[19]  J. H. Lang,et al.  Optimal-efficiency excitation of variable-reluctance motor drives , 1991 .

[20]  C. Broche,et al.  Calculation of the electromagnetic parameters of a switched reluctance motor using an improved FEM-BIEM. Application to different models for the torque calculation , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[21]  T.J.E. Miller,et al.  High-grade control of switched reluctance machines , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.