Wind turbine system with improved stability during shutdown

The invention relates to a wind turbine system (1) with a plurality of wind turbine modules each with a rotor (7). A control system is arranged to execute a shutdown procedure with a first control command (1CC) for terminating 5 power production from a first subset of wind turbine modules (2', M3, M4) resulting in a thrust force change with a reduced thrust force from the wind on a first part (3')of the support structure carrying the first subset of wind turbine modules (2'). A second control command (2CC) is applied to a second subset of wind turbine modules (2'', M1, M2) for enabling thrustcontrol (TC) of the second subset of wind turbine modules to oppose the thrust force change at the first part (3'). Thus, there is obtained an improved and cost-effective way of stabilizing a wind turbine system with multiple rotors during shutdown. 本发明涉及种风力涡轮机系统(1)，其具有多个风力涡轮机模块，每个风力涡轮机模块具有转子(7)。控制系统被设置成通过第控制命令(1CC)执行停机过程，以用于终止来自风力涡轮机模块的第子集(2′，M3，M4)的发电，从而导致推力变化，其中在支撑结构的承载风力涡轮机模块的所述第子集(2′)的第部分(3′)上具有减小的来自风的推力。第二控制命令(2CC)被