Abstract: A shared floating wind turbine foundation array with angle-adjustable elastic moorings is formed by connecting floating wind turbine foundations. Each floating wind turbine foundation includes a wind turbine tower, upper pontoons, a truss framework, lower mooring drums, a lower wind turbine hollow pile, a fixed static mooring line and a shared anchor; the lower wind turbine hollow pile includes a lifting plate, a hydraulic rod and a hydraulic device, the elastic chamber is internally provided with a pressure plate and an elastic device; and a first electric winch and a second electric winch are arranged in the winch chamber, and the first electric winch and the second electric winch drive the rotation of the adjacent lower wind turbine hollow piles by adjusting a length difference between the first power mooring line and the second power mooring line, thereby changing an angle of the adjacent wind turbine towers.

Abstract: A flexible retractable mooring system suitable for medium and shallow water operation, including first power generation devices, a second power generation device, and anchors; where the first power generation devices and the second power generation device are all connected to an offshore platform through mooring cables, and the first power generation devices are further connected to the anchors through anchor chains; the second power generation device is located directly below the offshore platform; and when the mooring system is operating, the mooring cables and the anchor chains are all in a tension state, and the first power generation devices and the second power generation device generate power by making use of tension of the mooring cables.