Control method and device, readable storage medium and three-phase four-leg converter

The invention provides a control method and device, a readable storage medium and a three-phase four-leg converter. The control method is used for controlling the three-phase four-bridge-arm converter, each group of bridge arms in the three-phase four-bridge-arm converter are connected with two switching elements, and the control method comprises the following steps: determining a target tetrahedron corresponding to a first current vector in a first coordinate system; determining a second current vector according to the target tetrahedron; according to the target tetrahedron and the first current component, the action time of the first current vector and the second current vector is determined, and the first current component is the current component of the first current vector in the first coordinate system; determining a switching pulse sequence of each group of bridge arms according to the action time; and controlling the on-off state of the switching element according to the switching pulse sequence. 本申请提