Calculation of optimal current density of double side permanent magnet linear synchronous motor

The use of design method considering a coil temperature to maximize the thrust density of a double side coreless permanent magnet linear synchronous motor (PMLSM) was presented. The optimal current density where the coil temperature reaches an allowable temperature with heat analysis was applied to a magnetic circuit design. Changing optimal current density is verified whenever the design parameters of the motor are altered. The design parameters of the motor were applied to thrust calculation. In this way, the optimal model, which is a reversal of the existing design method, is deduced. The results were compared with the experimental data to verify their validity. When the convection heat transfer coefficient is applied to other models, the results of the analysis and test values show good concordance. The method proposed has some limitations.

[1]  Chang Seop Koh,et al.  Shape Optimal Design of a 9-pole 10-slot PMLSM for Detent Force Reduction Using Adaptive Response Surface Method , 2009, IEEE Transactions on Magnetics.

[2]  Andrea Cavagnino,et al.  Evolution and Modern Approaches for Thermal Analysis of Electrical Machines , 2009, IEEE Transactions on Industrial Electronics.

[3]  Sang-Moon Hwang,et al.  A Novel Design of Linear Synchronous Motor Using FRM Topology , 2008, IEEE Transactions on Magnetics.

[4]  K. Yoshida,et al.  3-D FEM field analysis in controlled-PM LSM for Maglev vehicle , 1997 .

[5]  T. S. Radwan,et al.  Dynamic analysis of a high performance permanent magnet synchronous motor drive , 1996, Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering.

[6]  Masayuki Sanada,et al.  Interior permanent magnet linear synchronous motor for high performance drives , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[7]  V. Colli,et al.  Thermal Analysis of an Axial Flux Permanent-Magnet Synchronous Machine , 2009, IEEE Transactions on Magnetics.

[8]  D. R. Turner,et al.  Lumped parameter thermal model for electrical machines of TEFC design , 1991 .

[9]  Y. Jaluria,et al.  An Introduction to Heat Transfer , 1950 .

[10]  W.N.L. Mahadi,et al.  Thermal Analysis of a Tubular Permanent Magnet Linear Generator using Multiphysics Solver , 2005, TENCON 2005 - 2005 IEEE Region 10 Conference.

[11]  Dong Liu,et al.  On-Chip Thermal Management With Microchannel Heat Sinks and Integrated Micropumps , 2006, Proceedings of the IEEE.

[12]  Yun-Hyun Cho,et al.  Investigation of Auxiliary Poles Design Criteria on Reduction of End Effect of Detent Force for PMLSM , 2009, IEEE Transactions on Magnetics.