Focused on the cascade control problems of the VIENNA highvoltage rectifier system, based on the principle of improving system efficiency and reduce the loss, proposed a dualloop cascadetype highvoltage rectifier circuit, established a dualloop controller, and presented a singlephase cascade VIENNA rectifier circuit coordinated control strategy. Simulation results verified the stability and the correctness of coordination control for dualloop cascade VIENNA high voltage rectifier circuit.