Four- and eight-piece Halbach array analysis and geometry optimisation for maglev

A systematic analysis approach is presented for four- and eight-piece Halbach arrays' magnetic field and the geometric optimisation for magnetic levitation (Maglev) applications, which utilise the non-ideal array's magnetic field harmonics. The field analysis results obtained using scalar potential and Fourier series methods are confirmed with FEM results. The geometric optimisation is based on the maximisation of the ratio of the square of flux to a unit area magnet weight. The results of the systematic analysis of magnetic field and the geometric optimisation for practical Halbach arrays can be used as a technical framework for further Maglev system designs.

[1]  Rodger E. Ziemer,et al.  Principles of communications , 1976 .

[2]  K. Halbach Application of permanent magnets in accelerators and electron storage rings (invited) , 1984 .

[3]  M. Greenberg Advanced Engineering Mathematics , 1988 .

[4]  David L. Trumper,et al.  Magnet arrays for synchronous machines , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[5]  M. E. Williams,et al.  Design and analysis framework for linear permanent magnet machines , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[6]  R. F. Post,et al.  The Inductrack concept: A new approach to magnetic levitation , 1996 .

[7]  H. A. Shute,et al.  One-sided fluxes in planar, cylindrical, and spherical magnetized structures , 2000 .

[8]  K. Davey,et al.  Optimization shows Halbach arrays to be non-ideal for induction devices , 2000 .

[9]  Z. Zhu,et al.  Halbach permanent magnet machines and applications: a review , 2001 .

[10]  Seok-Myeong Jang,et al.  Comparison of two types of PM linear synchronous servo and miniature motor with air-cored film coil , 2002 .

[11]  R. F. Post,et al.  A null-current electro-dynamic levitation system , 2002 .

[12]  Toshiaki Murai,et al.  Electromagnetic analysis of inductrack magnetic levitation , 2003 .

[13]  J.F. Hoburg Modeling maglev passenger compartment static magnetic fields from linear Halbach permanent-magnet arrays , 2004, IEEE Transactions on Magnetics.

[14]  Dae-Gab Gweon,et al.  Analysis of Halbach magnet array and its application to linear motor , 2004 .