Abstarct: Permanent Magnet Brushless DC motors with trapezoidal back Electromotive Force waveform are increasingly being used in high performance applications due to their superior properties such as their high efficiency, compact structure, high torque, high reliability, and lower maintenance over the conventional motors. This motors are commonly used in three-phase form, using three-phase BLDC motors in sensitive industries, requires improving the functional characteristic performance of this motors. Various strategies such as modified control methods or increases the number of stator phases, offered to improve the performance of this motors. the multi-phase BLDC motor is considered as a good candidate for military application such as a propulsion system in warships. a BLDC motor with higher number of phase has several advantages compare to the conventional three-phase BLDC motors; It can reduce the torque, speed ripple and the stator current per phase, increase the power density and reliability in fault tolerant. In this paper, a twelve-phase BLDC motor simulated in abc frxame therefore The Functional characteristics of this motor extracted by direct speed control in current control method by use of fuzzy logic and compared to a similar three-phase BLDC motor. As results of This comparison identified, reduction of torque ripple , speed ripple and the stator current amplitude per phase and increasing the fault tolerant feature when one or more phases failed in twelve phase BLDC motor.