A novel self-shielding permanent-magnet rotor assembly
- 15 November 1988
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 64 (10) , 5986-5987
- https://doi.org/10.1063/1.342171
Abstract
The use of permanent magnets in brushless motors and generators is highly desirable in that they have great potential for reducing weight and increasing efficiency. A self-shielding cylindrical permanent-magnet assembly has been designed and was found to produce high fields at the outer magnet surface and very little flux leakage into the interior rotor space. Construction of this assembly is simplified because it is composed of magnets of simple triangular cross sections, which have only four distinct orientations. The self-shielding nature of the design obviates any need for ferromagnetic material for flux shaping or shielding, thus simplifying greatly the mathematical analysis of the design and reducing its weight and bulk. Finite element methods are used to analyze a hypothetical permanent-magnet rotor assembly with regard to various design parameters.This publication has 3 references indexed in Scilit:
- Promising applications of neodymium boron Iron magnets in electrical machinesIEEE Transactions on Magnetics, 1985
- The Fields and Parameters of Interior Type AC Permanent Magnet MachinesIEEE Transactions on Power Apparatus and Systems, 1982
- Development of a High Speed 2-Pole Permanent Magnet Synchronous MotorIEEE Transactions on Power Apparatus and Systems, 1980