Abstract :
In this paper, three-phase interior permanent magnet brushless DC motors are analyzed. The effect of magnetization direction, number of stator slots, winding distribution, skew angle, current waveform, and advance angle on torque pulsation is examined. Finite element method is used to calculate the torque, reluctance torque, back iron flux density, tooth flux density, detent torque, and back electromotive force of the motors. Switching instants are calculated such that the reluctance torque can be utilized and maximum torque with reduced pulsation is achieved. Experimental results to support the simulation findings are included in this paper.
Keywords :
brushless DC motors; finite element analysis; magnetisation; permanent magnet motors; torque; back electromotive force; back iron flux density; brushless DC motors; finite element method; interior permanent magnet motor; magnetization direction effect; reluctance torque; skew angle; stator slots; switching instant; torque pulsation; winding distribution; Brushless DC motors; DC motors; Finite element methods; Iron; Magnetic analysis; Magnetization; Permanent magnet motors; Stator windings; Teeth; Torque; Cogging torque; cogging torque; finite element analysis; interior permanent magnet (IPM) motors; interior permanent magnet motors; torque pulsation;
