Consideration on the Magnetic Flux Density Distribution of the Halbach Array Constructed by Cylinder Shape Permanent Magnets

Abstract

Halbach array is effective in forming a strong magnetic field. However, the conventional model is difficult to control the magnetic field because all the rectangular shaped permanent magnets are strongly fixed. Proposal Halbach array is constructed with cylinder shaped permanent magnets and rotating all magnets to control the magnetic field. The magnetic flux distribution of the Halbach array using cylinder shaped permanent magnets has been measured actually and simulated to provide the details on the magnetic performance of the proposal model. In the Halbach array using cylinder shaped permanent magnets, by synchronized rotation in the same direction with of all magnets, the slide of the magnetic field distribution has been confirmed. In this paper, it reveals that the features of the proposal model by comparing the detailed measurement and simulation results.