BRUSHLESS OUTER ROTOR PERMANENT MAGNET D.C. ELECTRIC MOTOR

摘要

Brushless Outer Rotor Permanent Magnet D.C. Electric Motor comprising of Outer rotor with metal ring on which 24 strong permanently magnetized magnets in 12 pairs of North and South Pole charge are fixed on rotor ring; right side end shield and left side end shield are machined to join with rotor ring; Stator with shaft provided with center hole through which connection wires pass from stator winding to shaft; smaller end of shaft matches with size of right side end-shield bearing and other matches with left side end-shield bearing; both bearings are fixed at center of both sides of end shields respectively; Stamping core fitted on plate having 72 slots on which three hall-effect sensors fitted; Three-phase coil winding placed in stamping slots which are 120°E out of phase from each other at symmetrical displacement producing continuous torque; Connection wires from hall-effect sensors to logic controller for controlling reversal of polarity.