Abstract: When the Vienna rectifier works under the condition of unbalanced power grid, the traditional PI control strategy will lead to the decline of steady-state and dynamic performance of the system. In order to solve the problems of poor quality of rectifier current waveform and DC side voltage dynamic regulation, a double-closed-loop hybrid control strategy for unbalanced power networks is proposed, the grid-side voltage is reconstructed by using the TPSE-EPLL phase-locked loop, and the inner loop predictive direct power control is combined to establish a voltage equation to eliminate power oscillation, so that the grid-side current THD value is reduced from 4.4% to 2.0%. The improved auto disturbance rejection control is introduced into the voltage outer loop, and the error and disturbance are used as state variables to restrain the maximum amplitude of overshoot and undershoot of the output voltage to less than 7 V. Finally, a 5 kW Vienna rectifier prototype was built to verify the proposed hybrid control strategy. The experimental results show that the proposed hybrid control strategy has good control effects.