Rectification control device and method for controlling thyristors in half-controlled rectifier bridge

The invention provides a rectification control device and a method for controlling a thyristor in a half-controlled rectifier bridge, the rectification control device is used for driving and controlling the thyristor in the half-controlled rectifier bridge, and the rectification control device comprises a voltage detection unit, an output enabling unit and a constant current driving unit; the voltage detection unit is respectively connected with each thyristor in the half-controlled rectifier bridge, and when any thyristor meets a preset condition, the output enabling unit outputs an enabling signal which enables the thyristor meeting the preset condition to be conducted to the constant current driving unit; and the constant current driving unit is respectively connected with gate poles of thyristors in the half-controlled rectifier bridge, and outputs a driving current for conducting the thyristors meeting the preset conditions according to the enable signal from the output enable unit. According to the embo