In order to improve current performance, a new control method is proposed to correct the distortion of phase current, in which the magnetic saturation and the nonlinear characteristic of inverters are considered. The amplitude fluctuation is eliminated by using feed forward current amplitude compensation. Meanwhile, based on iteration convergence control, the phase current is compulsorily corrected to a standard sinusoidal shape. Then, the problem of the phase current distortion is successfully solved. The experimental results show that the amplitude of phase current is reduced effectively, and the efficiency of motor system is improved．