Internal stress analysis of Halbach array magnets with application to linear synchronous motors

Author

Sakamoto, T. ; Wakimoto, H.

Author_Institution

Kyushu Inst. of Technol., Kitakyushu

fYear

2008

fDate

11-13 June 2008

Firstpage

136

Lastpage

141

Abstract

The paper deals with the analysis in both electromagnetic and mechanical aspects to discuss the guidelines for designing Halbach array magnets used in linear electrical machines. We show first the analytical approach for magnetic field of Halbach array permanent magnets, and then introduce an analytical methodology of flexures of plates that are used for fixing the PM array. The calculated results reveal the magnetic stress distributed along the array, and the plate deflection and tensile stress as a function of plate thickness.

Keywords

internal stresses; linear synchronous motors; machine theory; magnetic fields; permanent magnet motors; plates (structures); Halbach array permanent magnets; electromagnetic aspects; internal stress analysis; linear synchronous motors; magnetic field; mechanical aspects; plate deflection; plate thickness; tensile stress; Electromagnetic analysis; Internal stresses; Magnetic analysis; Magnetic flux; Magnetic flux leakage; Magnetization; Magnets; Soft magnetic materials; Synchronous motors; Tensile stress; Halbach array permanent magnet; linear synchronous motor; magnetic stress; plate flexure;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion, 2008. SPEEDAM 2008. International Symposium on

Conference_Location

Ischia

Print_ISBN

978-1-4244-1663-9

Electronic_ISBN

978-1-4244-1664-6

Type

conf

DOI

10.1109/SPEEDHAM.2008.4581156

Filename

4581156