Based on virtual d-q current decoupling control method, we introduce the control method of dual four-quadrant pulse rectifier in single traction converter, the implementation method of carrier phase-shifting in the same controller, the implementation method of carrier phase-shifting of multiplexed four-quadrant pulse rectifier between different controllers, and the modulation compensation method when the switching frequency of four-quadrant pulse rectifier is low (less than 500 Hz). Finally, the control method is verified on an actual high-power converter. It is proved that this method can achieve the control objectives of low harmonic current at the grid side, high unit power factor at the grid side and constant voltage at the DC side.