Method and system for controlling discharge of direct current bus, computer device and storage medium

The present invention relates to a method for controlling discharge of a direct current bus. The method comprises the steps of: receiving an active bleeding command; obtaining motor current signals according to the active bleeding command; converting the motor current signals to current signals in a stator coordinate system; based on the current signals in the stator coordinate system and a randomcurrent reference command of a preset stator coordinate system, outputting voltage control signals in the stator coordinate system; converting the voltage control signals in the stator coordinate system to three-phase voltage control signals, and controlling the working state of a switching device according to the three-phase voltage control signals. The voltage control signals in the stator coordinate system are output according to the current signals in the stator coordinate system and the random current reference command in the preset stator coordinate system to control the working state of the switching device to