INTERIOR PERMANENT MAGNET MOTOR

摘要

PURPOSE: A permanent magnet embedded motor is provided to reduce the performance degradation of the motor due to partial irreversible demagnetization by arranging a permanent magnet having large coercivity on a part vulnerable to the irreversible demagnetization. CONSTITUTION: A stator(10) includes a ring-shaped frame(12) and a teeth(14) connected to the frame. The frame and the teeth are integrally formed. A plurality of teeth is arranged at regular distances. A rotor(20) is installed on the inner side of the stator. A first magnet(30) made of neodymium materials and a second magnet(40) are embedded in the rotor. The rotor rotates around a rotation shaft(22).