Hybrid MMC topology and control method thereof

The invention relates to the technical field of power electronics, in particular to the technical field of commutation, in particular to a hybrid MMC topology and a control method thereof.For a sending-end converter, on the basis of an existing half-bridge sub-module, a second switching tube at the input end is removed, and a new sub-module topological structure is formed; for a receiving end current converter, on the basis of an existing half-bridge sub-module, a diode, connected to a switching tube in parallel, of an input end is removed, and a new sub-module topological structure is formed; and the control method is correspondingly improved. According to the invention, switching devices of the MMC topological structure can be saved, so that the cost is reduced; by improving the charging and discharging path of the capacitor in the sub-module topology, the charge flowing through the capacitor is increased under the condition that the same bridge arm current flows through, the improvement of the distribution