슬롯팅을 고려한 직경방향 착자된 영구자석을 갖는 초고속 기기의 특성해석

Analysis on the High Speed Machine with Diametrically Magnetized Permanent Magnet Rotor considering Slotting Effect

This paper deals with analysis of a 3-phase high speed machine with diametrically magnetized rotor. The field equations due to magnet and stator windings are established in terms of vector potential and 2-d polar coordinate systems and then, characteristic equation of torque and back emf are derived by using field equations. Finally, this paper predicts open-circuit field, armature reaction field distributions, field distributions on load, torque and back emf distributions from those of equations. Results are compared with predictions from corresponding finite element analyses.