Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2014.9.1.136
Title & Authors
Sensitivity Analysis of Geometrical Parameters of a Switched Reluctance Motor with Modified Pole Shapes Balaji, M.; Ramkumar, S.; Kamaraj, V.;
A major problem in Switched Reluctance Motor (SRM) is torque ripple, which causes undesirable acoustic noise and vibration. This work focuses on reducing the undesirable torque ripple in SRM by modifying stator and rotor geometry. This paper presents a comparative study on torque ripple minimization in SRM with modified pole shapes such as stator pole taper, stator pole face with non-uniform air gap and pole shoe attached to rotor pole. Further this paper presents a detailed sensitivity analysis of the effect of different geometrical parameters that alter the pole face shapes on the performance of SRM. The analysis is performed using finite-element method considering average torque and torque ripple as performance parameters. Based on the analysis, a design combining stator pole taper with non-uniform air gap is proposed to improve the torque characteristics of SRM. The dynamic characteristics of the proposed design are simulated and the results show satisfactory reduction in torque ripple.
Average torque;Torque ripple;Switched reluctance motor;Design modifications;
T. J. E, Miller "Switched reluctance motor and their control", Oxford: Magna Physics, 1993.
R. Krishnan Switched Reluctance Motor Drives: Modeling, Simulation, Analysis, Design and Applications, CRC press, Boca Raton, 2001.
I. Husain, "Minimization of Torque Ripple in SRM drives", IEEE Trans. Industrial Electronics, Vol. 49, No. 1, pp. 28-39, 2002.
I. Husain and M. Ehsani "Torque Ripple Minimization in Switched Reluctance Motor Drives by PWM Current Control", IEEE Transactions on Power Electronics, Vol. 11, No. 1, pp. 83-88, 1996.
N. T. Shaked and R. Rabinovici, "New Procedures for Minimizing the Torque Ripple in Switched Reluctance Motors by Optimizing the Phase-Current Profile", IEEE Transactions On Magnetics, Vol. 41, No. 3, pp. 1184-1192, 2005.
F. Sahin, H. B. Erta, and L. Leblebicioglu, "Optimum geometry for torque ripple minimization of switched reluctance motors", IEEE Tranactions on Energy Conversion, Vol. 15, No. 1, pp. 30-39, 2000.
R. Arumugam, J. F. Lindsay, and R. Krishnan, "Sensitivity of pole arc/pole pitch ratio on switched reluctance motor performance, " in Conf. Rec. IEEE IAS Annu. Meeting, Pittsburgh, PA, Oct. 1988, vol. 1, pp. 50-54.
J. Faiz and J. W. Finch, "Aspects of design optimization for switched reluctance motors, " IEEE Trans. Energy Convers., vol. 8, no. 4, pp. 704-713, Dec. 1993.
S. S. Murthy, B. Singh, and V. K. Sharma, "Finite element analysis to achieve optimum geometry of switched reluctance motor, " in Proc. IEEE TENCON, 1998, vol. 2, pp. 414-418.
N. K. Sheth and K. R. Rajagopal, "Optimum pole arcs for a switched reluctance motor for higher torque with reduced ripple, " IEEE Trans. Magn., vol. 39, no. 5, pp. 3214-3216, Sep. 2003.
H. Sahraoui, H. Zeroug, H. A. Toliyat, Switched Reluctance Motor Design Using Neural-Network Method with Static Finite Element Simulation, IEEE Transactions on Magnetics, vol. 43, no. 12, pp. 4089-4095, 2007.
S. I. Nabeta, I. E. Chabu, L. Lebensztajn, D. A. P. Corrêa and W. M. DaSilva, "Mitigation of the torque ripple of a switched reluctance motor through a multi-objective optimization.", IEEE Trans. Magnetics, Vol. 44, No. 6, pp. 1018-1021, 2008.
M. Moallem, C. -M. Ong, and L. E. Unnewehr, "Effect of Rotor Profiles on the Torque of a Switched-Reluctance Motor", IEEE Transaction on Industry Applications, Vol. 28, No. 2, pp. 364-369, 1992.
N. K. Sheth, and K. R. Rajagopal, "Torque profiles of a switched reluctance motor having special pole face shapes and asymmetric stator poles", IEEE Transactions on Magnetics, Vol. 40, No. 4, pp. 2035-2037, 2004.
C. Neagoe, A. Foggia, and R. Krishnan, "Impact of pole tapering on the electromagnetic torque of the switched reluctance motor", IEEE International conference on Electric Machines and Drives, pp. WA1/2. 1 - WA1/2. 3, 1997.
Yong Kwon Choi, Hee Sung Yoon. and Chang Seop Koh. "Pole-shape optimization of a switched-reluctance motor for torque ripple Reduction", IEEE Transactions on Magnetics, Vol. 43, No. pp. 1797-1800, 2007.
L. Ramanarayanan. Venkatesha, and D. Panda, "Flux-linkage characteristics of switched reluctance motor, " in Power Electronics, Drives and Energy Systems for Industrial Growth, Proceedings of the 1996 International Conference on, vol. 1, pp. 281-285, 1996.
M. Balaji. and V. Kamaraj, "Optimum Design of Switched Reluctance Machine for Electric Vehicle Applications using Chaotic Particle Swarm Optimization", International Review of Electrical Engineering, Vol. 6, No. 2, pp. 770-776, 2011.