Design and Electromagnetic Analysis of a New Rotary-Linear Switched Reluctance Motor in Static Mode
Keywords:
Electromagnetic analysis, finite element analysis, rotary-linear motion, switched reluctance motorAbstract
A newly designed rotary-linear switched reluctance (RLSRM) motor is presented and electromagnetically analyzed in this paper. The motor has an integrated structure and can control both linear and rotary motions. It is mainly designed to control the engagement of a rotating gear. For this purpose a twosection motor comprised of a rotary and a linear SRM is designed. In the middle part of the motor assembly, a three-phase rotary SRM with 6 stator and 4 rotor poles creates rotary motion. The linear section which is a transverse flux two-phase SRM is composed of two parts placing at each side of the rotary section. The cylindrical translators inside the linear stator poles provide short magnetic flux paths which reduce the core losses and increase the force per volume. The motor parameters derived from the motor design procedure are evaluated using 3-dimensional finite element analysis (3DFEA). The motor performance indices such as flux linkages, flux density, mutual flux, static torque and force for various loads are obtained and assessed for rotary and linear motions. Finally, a comparative study is performed and 3DFEA results are compared with two different RLSRM structures. The comparison shows that the proposed structure has the highest force per motor volume.
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L. Xiang, S. Zuo, L. He, M. Zhang, J. Hu, and G. Long, “Optimization of interior permanent magnet motor on electric vehicles to reduce vibration caused by the radial force,” Applied Computational Electromagnetics Society Journal, vol. 29, 2014.
E. Afjei, M. Tavakoli, and H. Torkaman, “Eccentricity compensation in switched reluctance machines via controlling winding turns/stator current: theory, modeling, and electromagnetic analysis,” Applied Computational Electromagnetics Society Journal, vol. 28, 2013.
R. Krishnan, Switched Reluctance Motor Drives: Modeling, Simulation, Analysis, Design, and Applications, CRC Press, 2010.
H. Torkaman, N. Arbab, H. Karim, and E. Afjei, “Fundamental and magnetic force analysis of an external rotor switched reluctance motor,” Applied Computational Electromagnetics Society Journal, vol. 26, 2011.
E. Aycicek, N. Bekiroglu, I. Senol, and Y. Oner, “Rotor configuration for cogging torque minimization of the open-slot structured axial flux permanent magnet synchronous motors,” Applied Computational Electromagnetics Society Journal, vol. 30, 2015.
C. He, H. Chen, and Y. Zhou, “Design indicators and structure optimisation of switched reluctance machine for electric vehicles,” Electric Power Applications, IET, vol. 9, pp. 319-331, 2015.
J. Lin, K. W. E. Cheng, X. Xue, N. C. Cheung, and Z. Zhang, “Estimation of inductance derivative for force control of linear switched reluctance actuator,” IEEE Transactions on Magnetics, vol. 50, pp. 1-4, 2014.
A. Labak and N. C. Kar, “Design and prototyping a novel 5-phase pancake shaped axial flux SRM for electric vehicle application through dynamic FEA incorporating flux-tube modeling,” IEEE Transactions on Industry Applications, vol. 49, pp. 1276-1288, 2013.
R. Madhavan and B. G. Fernandes, “Axial flux segmented SRM with a higher number of rotor segments for electric vehicles,” IEEE Transactions on Energy Conversion, vol. 28, pp. 203-213, 2013.
T. Yano, Actuator with Multi Degrees of Freedom, in Next-Generation Actuators Leading Breakthroughs, ed: Springer, pp. 279-290, 2010.
G. Krebs, A. Tounzi, B. Pauwels, D. Willemot, and F. Piriou, “Modeling of a linear and rotary permanent magnet actuator,” IEEE Transactions on Magnetics, vol. 44, pp. 4357-4360, 2008.
M. Bertoluzzo, P. Bolognesi, O. Bruno, G. Buja, S. Castellan, V. Isastia, et al., “A distributed driving and steering system for electric vehicles using rotary-linear motors,” in Power Electronics Electrical Drives Automation and Motion, 2010 International Symposium on, pp. 1156-1159, 2010.
K. Meessen, J. Paulides, and E. Lomonova, “Analysis of a novel magnetization pattern for 2- DoF rotary-linear actuators,” IEEE Transactions on Magnetics, vol. 48, pp. 3867-3870, 2012.
Y. Sato, “Development of a 2-degree-of-freedom rotational/linear switched reluctance motor,” IEEE Transactions on Magnetics, vol. 43, pp. 2564- 2566, 2007.
J. Pan, F. Meng, and G. Cao, “Decoupled control for integrated rotary–linear switched reluctance motor,” Electric Power Applications, IET, vol. 8, pp. 199-208, 2014.
J. F. Pan, Z. Yu, and N. C. Cheung, “Performance analysis and decoupling control of an integrated rotary-linear machine with coupled magnetic paths,” IEEE Transactions on Magnetics, vol. 50, pp. 761-764, 2014.
J. Pan, N. Cheung, and G.-Z. Cao, “Investigation of a rotary-linear switched reluctance motor,” XIX International Conference on Electrical Machines, pp. 1-4, 2010.
I. Bentia, L. Szabo, and M. Ruba, “On a rotarylinear switched reluctance motor,” in Power Electronics, Electrical Drives, International Symposium on Automation and Motion, pp. 507- 510, 2012.
J. Cao, “A rotary-linear switched reluctance motor,” in 2009 3rd International Conference on Power Electronics Systems and Applications, pp. 1-4, 2009.
Slide Rotary Bush. Available: http://www.nblinear.co.jp/english/product/lineup/strokebush/sre. html/, June 2015.
J. Chang, D. Kang, I.-A. Viorel, and S. Larisa, “Transverse flux reluctance linear motor’s analytical model based on finite-element method analysis results,” IEEE Transactions on Magnetics, vol. 43, pp. 1201-1204, 2007.
Magnet CAD Package User Manual, Infolytica Corporation Ltd., Montreal, Canada, 2007.
