PERMANENT MAGNET MOTOR

摘要

PURPOSE: A motor of a permanent magnet is provided to reduce cogging torque and torque ripple causing noise and vibration by implementing the shape of the permanent magnet attached to the surface of a rotator in a sine wave and by having a magnetic flux and a counter electro-motive force generated from the permanent magnet as the shape of the sine wave. CONSTITUTION: A motor (100) of a permanent magnet (30) is a permanent magnet surface attaching type brushless direct current motor. The motor includes a rotator (110) having a structure in which the permanent magnet is attached to the surface and a stator (150) including a coil (160) mutually and electrically operated with the permanent magnet. The rotator includes a shaft (120) comprising the center of rotation; a rotator core (111) forming a cylinder shape by being connected to the shaft; and a plurality of the permanent magnets attached and connected to the surface of the rotator core. The permanent magnet comprises an N pole (131) and an S pole (135) and reduces cogging torque and torque ripple causing noise and vibration of the motor by having a magnetic flux and a counter electro-motive force of a sine wave form.