Abstract: Because of the pole number being close to the slot number,the five-phase permanent magnet torque motor has abundant harmonic components of magnetic motive force（MMF）,which influences the torque performance of the motor.Therefore,the electromagnetic torque of the motor is analyzed by using the MMF method.The analytical expression of the motor electromagnetic torque is derived from the magnetic energy and the virtual displacement principle,and it reveals the rule that the torque is generated only when the MMF of the stator and the rotor have the same space harmonic order.The analysis of the relationship between stator and rotor MMFs and electromagnetic torque in the five-phase permanent magnet torque motors shows that the average electromagnetic torque of the motor could be enhanced under the reaction of the stator and rotor MMFs,when the speed of stator and rotor MMFs is equal to the speed of main wave.The MMF harmonic components of the stator and rotor and the performance of the torque are analyzed by using the Ansoft finite element software,when the motor is energized by the sinusoidal,trapezoidal and rectangular current separately.The simulation results demonstrate that the electromagnetic torque of the motor is enhanced along with the torque ripple when the motor is energized by non-sinusoidal currents,and prove that this method is effective and correct.