Analytical magnetic field analysis of Halbach magnetized permanent-magnet machines

By Zhen Ping Xia, Z.Q. Zhu, David Howe. IEEE transactions on magnetics, 2004

204 citations recorded by the source corpus.

We develop analytical models for predicting the magnetic field distribution in Halbach magnetized machines. They are formulated in polar coordinates and account for the relative recoil permeability of the magnets. They are applicable to both internal and external rotor permanent-magnet machines with either an iron-cored or air-cored stator and/or rotor. We compare predicted results with those obtained by finite-element analyses and measurements. We show that the air-gap flux density varies significantly with the pole number and that an optimal combination of the magnet thickness and the pole number exists for maximum air-gap flux density, while the back iron can enhance the air-gap field and electromagnetic torque when the radial thickness of the magnet is small.

Subfields: Control and Systems Engineering, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/473abee9aea83591694112f8fd9abeeccf2d60b4

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In Control and Systems Engineering

In Electrical and Electronic Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

A Coaxial Magnetic Gear With Halbach Permanent-Magnet Arrays (2010, background): “quasi-Poissonian equations of the scalar magnetic potential [19].”
An Accurate Subdomain Model for Magnetic Field Computation in Slotted Surface-Mounted Permanent-Magnet Machines (2010, methodology): “An analytical model for ideal Halbach PM machines with air/iron cored rotor was developed in [43] with consideration of both internal and external rotors, while in [44], a model including higher harmonics was developed for two-segmented Halbach PM, but considers unity relative recoil permeability of”