Offshore wind power HVDC converter, control method, equipment and medium

The invention belongs to the technical field of offshore wind power direct current transmission, and particularly relates to an offshore wind power HVDC converter, a control method, equipment and a medium. In order to overcome the defects that an existing offshore wind power HVDC converter of a parallel structure is large in number of sub-modules, high in cost and large in size and weight, the invention adopts the following technical scheme that the offshore wind power HVDC converter comprises a DRU unit; a VSC unit; the interface unit comprises a cascade half-bridge structure, a device series structure and an interface direct current inductor; wherein the alternating current sides of the DRU unit and the VSC unit are connected in parallel, the direct current sides of the DRU unit and the VSC unit are connected through the interface unit, the positive electrode of the cascade half-bridge structure is connected to the positive electrode of the DRU unit, the interface direct current inductor is connected to the