A Study on the Overhang Effect according to the Rotor Types of Permanent Magnet Machine

영구자석 회전자 타입에 따른 오버행 효과 고찰

The overhang parameter is required to maximize the power density of generator. However, the use of overhang design causes the rise of material cost. Moreover there is somewhat different overhang effect according to the rotor types. This paper presents the overhang effect on the overhang length according to the rotors with permanent magnet of generators. To examine the phenomenon of overhang effect, the new dynamic analysis method with 2D FEM is suggested and verified by the test results.