대한전기학회 전기기기 및 에너지변환시스템학회 2001년도 추계학술대회 논문집, page. 27-29
Abstract
In this paper, we study in magnetizing the NdFeB magnet which is inserted in
a squirrel cage rotor. The inserted NdFeB magnet need much more magnetizing flux
than that of ferrite magnet. Also the eddy current flowing in rotor bar disturbs
the magnetizer in magnetizing the NdFeB magnet. The existing magnetizing yoke is
designed by increasing the coil turn. But we recognize that only by increasing the
coil turn it is impossible to make NdFeB magnet magnetized fully. Hence, in this
paper we propose the method of increasing magnetizing flux by reducing the rotor
bar area.