Rectification device

The utility model provides a rectification device. The rectification device comprises a three-phase rectifier bridge, a single-phase rectifier bridge and a power supply input terminal. The three-phase rectifier bridge includes a first live-line interface, a second live-line interface and a third live-line interface. The interfaces may be connected with the power supply input terminal or suspended. The three-phase rectifier bridge also includes a zero-line interface and a first voltage output interface. The first voltage output interface is connected with a direct-current bus. The single-phase rectifier bridge includes a first voltage input interface and a second voltage input interface which are connected with the direct-current bus. A second voltage output terminal is connected to the zero-line interface through short-circuit or connected to a zero line of the power supply input terminal. The rectification device provided by the utility model can support three types of power supply input and is capable of carrying out three kinds of rectification, so that the technical problems in the prior art that the servo system only supports one or two power supply modes and needs additional transformers, which causes space occupation, cost increase and power consumption increase, are solved.