Modularized multilevel converter multi-frequency coupling transfer function matrix model construction method

The invention relates to the technical field of power system analysis and control, in particular to a modular multilevel converter multi-frequency coupling transfer function matrix model construction method. The method comprises the following steps: acquiring a circuit parameter, a control parameter and a steady-state operation parameter of the modular multilevel converter; determining a three-dimensional transfer function matrix corresponding to the modular multilevel converter according to the circuit parameters, the control parameters and the steady-state operation parameters; and determining a multi-frequency coupling transfer function matrix model corresponding to the modular multilevel converter according to the three-dimensional transfer function matrix, and performing stability analysis on the modular multilevel converter according to the multi-frequency coupling transfer function matrix model. According to the multi-frequency coupling transfer function matrix model constructed by adopting the scheme,